{"id":2895,"date":"2026-06-28T08:15:37","date_gmt":"2026-06-28T08:15:37","guid":{"rendered":"https:\/\/rms-labgroup.com\/?page_id=2895"},"modified":"2026-07-19T07:11:07","modified_gmt":"2026-07-19T07:11:07","slug":"classical-gemology","status":"publish","type":"page","link":"https:\/\/rms-labgroup.com\/tr\/laboratories\/advanced-gemology-laboratory\/classical-gemology\/","title":{"rendered":"Classical Gemology"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"2895\" class=\"elementor elementor-2895\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-087a53b e-flex e-con-boxed e-con e-parent\" data-id=\"087a53b\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c85dc87 elementor-widget__width-initial elementor-widget elementor-widget-gallery\" data-id=\"c85dc87\" data-element_type=\"widget\" data-settings=\"{&quot;columns&quot;:2,&quot;columns_tablet&quot;:1,&quot;lazyload&quot;:&quot;yes&quot;,&quot;gallery_layout&quot;:&quot;grid&quot;,&quot;columns_mobile&quot;:1,&quot;gap&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;gap_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;gap_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;link_to&quot;:&quot;file&quot;,&quot;aspect_ratio&quot;:&quot;3:2&quot;,&quot;overlay_background&quot;:&quot;yes&quot;,&quot;content_hover_animation&quot;:&quot;fade-in&quot;}\" data-widget_type=\"gallery.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-gallery__container\">\n\t\t\t\t\t\t\t<a class=\"e-gallery-item elementor-gallery-item elementor-animated-content\" href=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/RGS-Diamond-Color-Grading1.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-slideshow=\"c85dc87\" data-elementor-lightbox-title=\"RGS Diamond Color Grading1\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6ODQ2LCJ1cmwiOiJodHRwczpcL1wvcm1zLWxhYmdyb3VwLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNlwvMDZcL1JHUy1EaWFtb25kLUNvbG9yLUdyYWRpbmcxLmpwZyIsInNsaWRlc2hvdyI6ImM4NWRjODcifQ%3D%3D\">\n\t\t\t\t\t<div class=\"e-gallery-image elementor-gallery-item__image\" data-thumbnail=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/RGS-Diamond-Color-Grading1-300x139.jpg\" data-width=\"300\" data-height=\"139\" aria-label=\"\" role=\"img\" ><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-gallery-item__overlay\"><\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t<a class=\"e-gallery-item elementor-gallery-item elementor-animated-content\" href=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/RGS-Diamond-Color-Grading2.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-slideshow=\"c85dc87\" data-elementor-lightbox-title=\"RGS Diamond Color Grading2\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6ODQ3LCJ1cmwiOiJodHRwczpcL1wvcm1zLWxhYmdyb3VwLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNlwvMDZcL1JHUy1EaWFtb25kLUNvbG9yLUdyYWRpbmcyLmpwZyIsInNsaWRlc2hvdyI6ImM4NWRjODcifQ%3D%3D\">\n\t\t\t\t\t<div class=\"e-gallery-image elementor-gallery-item__image\" data-thumbnail=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/RGS-Diamond-Color-Grading2-300x139.jpg\" data-width=\"300\" data-height=\"139\" aria-label=\"\" role=\"img\" ><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-gallery-item__overlay\"><\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8453439 elementor-widget elementor-widget-text-editor\" data-id=\"8453439\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><b>RGS Diamond Color Grading<\/b><\/p><p>The RGS laboratory uses a GIA-certified natural diamonds master stones to color grading. Color grading is one of the most critical factors in determining a diamond\u2019s beauty and value. The subtle differences between grades especially in the near-colorless range can be extremely difficult to detect without proper comparison. This is why having a master color stone is essential.<\/p><p>On the other hand to produce consistent and repeatable color-grading results, it is needed to have a standardized viewing environment. The RGS stablished a Light Box which provides a viewing environment that combines standard daylight conditions optimized by fluorescent lighting with customized LED illumination.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-72576ac e-con-full e-flex e-con e-parent\" data-id=\"72576ac\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-920c4e7 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"920c4e7\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ce8dd87 e-flex e-con-boxed e-con e-parent\" data-id=\"ce8dd87\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-13028d3 elementor-widget__width-initial elementor-widget elementor-widget-gallery\" data-id=\"13028d3\" data-element_type=\"widget\" data-settings=\"{&quot;columns&quot;:2,&quot;columns_tablet&quot;:1,&quot;lazyload&quot;:&quot;yes&quot;,&quot;gallery_layout&quot;:&quot;grid&quot;,&quot;columns_mobile&quot;:1,&quot;gap&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;gap_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;gap_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;link_to&quot;:&quot;file&quot;,&quot;aspect_ratio&quot;:&quot;3:2&quot;,&quot;overlay_background&quot;:&quot;yes&quot;,&quot;content_hover_animation&quot;:&quot;fade-in&quot;}\" data-widget_type=\"gallery.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-gallery__container\">\n\t\t\t\t\t\t\t<a class=\"e-gallery-item elementor-gallery-item elementor-animated-content\" href=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/RGS-Gemological-Microscopes-2.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-slideshow=\"13028d3\" data-elementor-lightbox-title=\"RGS Gemological Microscopes 2\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6ODUyLCJ1cmwiOiJodHRwczpcL1wvcm1zLWxhYmdyb3VwLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNlwvMDZcL1JHUy1HZW1vbG9naWNhbC1NaWNyb3Njb3Blcy0yLmpwZyIsInNsaWRlc2hvdyI6IjEzMDI4ZDMifQ%3D%3D\">\n\t\t\t\t\t<div class=\"e-gallery-image elementor-gallery-item__image\" data-thumbnail=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/RGS-Gemological-Microscopes-2-300x229.jpg\" data-width=\"300\" data-height=\"229\" aria-label=\"\" role=\"img\" ><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-gallery-item__overlay\"><\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t<a class=\"e-gallery-item elementor-gallery-item elementor-animated-content\" href=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/RGS-Gemological-Microscopes1.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-slideshow=\"13028d3\" data-elementor-lightbox-title=\"RGS Gemological Microscopes1\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6ODUzLCJ1cmwiOiJodHRwczpcL1wvcm1zLWxhYmdyb3VwLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNlwvMDZcL1JHUy1HZW1vbG9naWNhbC1NaWNyb3Njb3BlczEucG5nIiwic2xpZGVzaG93IjoiMTMwMjhkMyJ9\">\n\t\t\t\t\t<div class=\"e-gallery-image elementor-gallery-item__image\" data-thumbnail=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/RGS-Gemological-Microscopes1-300x225.png\" data-width=\"300\" data-height=\"225\" aria-label=\"\" role=\"img\" ><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-gallery-item__overlay\"><\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4c627c3 elementor-widget elementor-widget-text-editor\" data-id=\"4c627c3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><b>RGS Gemological Microscopes<\/b><\/p><p>The laboratory is equipped with various makes and model of stereo binocular microscope but they all have the same basic components. These microscopes provide stereo (three-dimensional) viewing, standard gemological magnification, and specialized illumination systems such as dark field and oblique lighting, enabling clear observation of internal and surface features of gem materials.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d263900 e-con-full e-flex e-con e-parent\" data-id=\"d263900\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1b70376 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"1b70376\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-46ca22f e-flex e-con-boxed e-con e-parent\" data-id=\"46ca22f\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6f98a21 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"6f98a21\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><b>Gemological Immersion Microscopes <\/b><\/p><p>RGS has developed and constructed an immersion microscope, a gemological instrument designed to examine gemstones while they are submerged in a liquid with a refractive index close to that of the stone. This technique reduces surface reflections and refraction, allowing internal features such as inclusions, growth and color zoning, internal strain, and treatment-related characteristics to be observed with greater clarity.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7c5faad elementor-widget elementor-widget-image\" data-id=\"7c5faad\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"594\" height=\"427\" src=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/Gemological-Immersion-Microscopes.png\" class=\"attachment-large size-large wp-image-854\" alt=\"\" srcset=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/Gemological-Immersion-Microscopes.png 594w, https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/Gemological-Immersion-Microscopes-300x216.png 300w, https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/Gemological-Immersion-Microscopes-18x12.png 18w\" sizes=\"(max-width: 594px) 100vw, 594px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-984c4ec e-con-full e-flex e-con e-parent\" data-id=\"984c4ec\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5186f97 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"5186f97\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-63a1bf6 e-flex e-con-boxed e-con e-parent\" data-id=\"63a1bf6\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-427cc18 elementor-widget__width-initial elementor-widget elementor-widget-gallery\" data-id=\"427cc18\" data-element_type=\"widget\" data-settings=\"{&quot;columns&quot;:2,&quot;columns_tablet&quot;:1,&quot;lazyload&quot;:&quot;yes&quot;,&quot;gallery_layout&quot;:&quot;grid&quot;,&quot;columns_mobile&quot;:1,&quot;gap&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;gap_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;gap_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;link_to&quot;:&quot;file&quot;,&quot;aspect_ratio&quot;:&quot;3:2&quot;,&quot;overlay_background&quot;:&quot;yes&quot;,&quot;content_hover_animation&quot;:&quot;fade-in&quot;}\" data-widget_type=\"gallery.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-gallery__container\">\n\t\t\t\t\t\t\t<a class=\"e-gallery-item elementor-gallery-item elementor-animated-content\" href=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/Precision-Balance.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-slideshow=\"427cc18\" data-elementor-lightbox-title=\"Precision Balance\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6ODU4LCJ1cmwiOiJodHRwczpcL1wvcm1zLWxhYmdyb3VwLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNlwvMDZcL1ByZWNpc2lvbi1CYWxhbmNlLnBuZyIsInNsaWRlc2hvdyI6IjQyN2NjMTgifQ%3D%3D\">\n\t\t\t\t\t<div class=\"e-gallery-image elementor-gallery-item__image\" data-thumbnail=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/Precision-Balance-237x300.png\" data-width=\"237\" data-height=\"300\" aria-label=\"\" role=\"img\" ><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-gallery-item__overlay\"><\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t<a class=\"e-gallery-item elementor-gallery-item elementor-animated-content\" href=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/Polariscope.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-slideshow=\"427cc18\" data-elementor-lightbox-title=\"Polariscope\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6ODU5LCJ1cmwiOiJodHRwczpcL1wvcm1zLWxhYmdyb3VwLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNlwvMDZcL1BvbGFyaXNjb3BlLnBuZyIsInNsaWRlc2hvdyI6IjQyN2NjMTgifQ%3D%3D\">\n\t\t\t\t\t<div class=\"e-gallery-image elementor-gallery-item__image\" data-thumbnail=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/Polariscope.png\" data-width=\"244\" data-height=\"209\" aria-label=\"\" role=\"img\" ><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-gallery-item__overlay\"><\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t<a class=\"e-gallery-item elementor-gallery-item elementor-animated-content\" href=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/Refractometer.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-slideshow=\"427cc18\" data-elementor-lightbox-title=\"Refractometer\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6ODYwLCJ1cmwiOiJodHRwczpcL1wvcm1zLWxhYmdyb3VwLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNlwvMDZcL1JlZnJhY3RvbWV0ZXIuanBnIiwic2xpZGVzaG93IjoiNDI3Y2MxOCJ9\">\n\t\t\t\t\t<div class=\"e-gallery-image elementor-gallery-item__image\" data-thumbnail=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/Refractometer.jpg\" data-width=\"244\" data-height=\"173\" aria-label=\"\" role=\"img\" ><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-gallery-item__overlay\"><\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3882405 elementor-widget elementor-widget-text-editor\" data-id=\"3882405\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><b>Classic Gemological Instruments<\/b><\/p><p><b>Precision Balance<\/b><\/p><p>The AS 60\/220.R2 PLUS Analytical Balance, manufactured by Radwag\u00a0 (a precision balance maker from Poland), offers high-precision measurement of gemstone specific gravity. Using hydrostatic weighing, accurately determines density, essential for distinguishing gemstones with similar appearances and ensuring reliable identification.<\/p><p><b>Refractometer<\/b><\/p><p>The GIA Refractometer (from the Gemological Institute of America) provides accurate measurement of a gem\u2019s refractive index (RI). Its use is essential for any gemological laboratory.<\/p><p><b>Polariscope<\/b><\/p><p>The polariscope is a fundamental gemological tool used to observe a gem\u2019s internal optical behavior using polarized light. At RGS, we use the GIA Polariscope as a visual, non-destructive instrument for studying the internal structure of gem materials.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-782a576 e-con-full e-flex e-con e-parent\" data-id=\"782a576\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a983dc8 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"a983dc8\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d98bac7 e-flex e-con-boxed e-con e-parent\" data-id=\"d98bac7\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-2024482 e-con-full e-flex e-con e-child\" data-id=\"2024482\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-39d67ba elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"39d67ba\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h1>Polariscope<\/h1><div class=\"ds-message _63c77b1\"><div class=\"ds-markdown\"><p class=\"ds-markdown-paragraph\">The polariscope is a key gemology tool that uses polarized light to analyze a gem&#8217;s crystal structure. At the Razi Gemological Institute, it is a vital first step for fast, non-destructive screening. It instantly distinguishes single-crystal gems from aggregates, reveals strain in synthetics, and helps detect imitations, forming a core part of Razi&#8217;s precise identification workflow.<\/p><\/div><\/div><div class=\"ds-theme\">\u00a0<\/div><div class=\"ds-flex _0a3d93b\"><div class=\"ds-flex _965abe9 _54866f7\"><div class=\"db183363 ds-icon-button ds-icon-button--m ds-icon-button--sizing-container\" tabindex=\"0\" role=\"button\" aria-disabled=\"false\">\u00a0<\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-375c902 e-con-full e-flex e-con e-child\" data-id=\"375c902\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-eb52e5d elementor-widget elementor-widget-image\" data-id=\"eb52e5d\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"571\" height=\"1024\" src=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/Polariscope2.jpg\" class=\"attachment-large size-large wp-image-1898\" alt=\"\" srcset=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/Polariscope2.jpg 571w, https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/Polariscope2-167x300.jpg 167w, https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/Polariscope2-7x12.jpg 7w\" sizes=\"(max-width: 571px) 100vw, 571px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b68bf87 e-con-full e-flex e-con e-parent\" data-id=\"b68bf87\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-097e2fc elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"097e2fc\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7706e38 e-flex e-con-boxed e-con e-parent\" data-id=\"7706e38\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-cfa64bf e-con-full e-flex e-con e-child\" data-id=\"cfa64bf\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-1c6f6d7 e-con-full e-flex e-con e-child\" data-id=\"1c6f6d7\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-88fa3f8 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"88fa3f8\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h1><b>Refractometer<\/b><\/h1><div class=\"ds-message _63c77b1\"><div class=\"ds-markdown\"><p class=\"ds-markdown-paragraph\">A refractometer is a fundamental gemological instrument that measures a gemstone&#8217;s refractive index (RI), its unique &#8220;light fingerprint.&#8221; At the Razi Gemological Institute, it is the primary tool for conclusive gem identification. By precisely quantifying how light bends within a stone, it provides definitive data to distinguish between look-alike gems, confirm natural origins, and detect synthetics or treatments, making it indispensable for accurate and authoritative analysis.<\/p><\/div><\/div><div class=\"ds-theme\">\u00a0<\/div><div class=\"ds-flex _0a3d93b\"><div class=\"ds-flex _965abe9 _54866f7\"><div class=\"db183363 ds-icon-button ds-icon-button--m ds-icon-button--sizing-container\" tabindex=\"0\" role=\"button\" aria-disabled=\"false\">\u00a0<\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8a482db e-con-full e-flex e-con e-child\" data-id=\"8a482db\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-89bb171 elementor-widget elementor-widget-image\" data-id=\"89bb171\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"696\" height=\"1024\" src=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/refractometer2.jpg\" class=\"attachment-large size-large wp-image-1899\" alt=\"\" srcset=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/refractometer2.jpg 696w, https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/refractometer2-204x300.jpg 204w, https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/refractometer2-8x12.jpg 8w\" sizes=\"(max-width: 696px) 100vw, 696px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d4bc14c e-con-full e-flex e-con e-parent\" data-id=\"d4bc14c\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-bce8b90 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"bce8b90\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b8df0ff e-flex e-con-boxed e-con e-parent\" data-id=\"b8df0ff\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-192847b e-con-full e-flex e-con e-child\" data-id=\"192847b\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-e30becf e-con-full e-flex e-con e-child\" data-id=\"e30becf\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-4a6578f e-con-full e-flex e-con e-child\" data-id=\"4a6578f\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-047e1bb elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"047e1bb\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h1>S.G kits<\/h1><div class=\"ds-flex _0a3d93b\"><div class=\"ds-flex _965abe9 _54866f7\"><div class=\"db183363 ds-icon-button ds-icon-button--m ds-icon-button--sizing-container\" tabindex=\"0\" role=\"button\" aria-disabled=\"false\"><div class=\"_4f9bf79 d7dc56a8 _43c05b5\"><div class=\"ds-message _63c77b1\"><div class=\"ds-markdown\"><p class=\"ds-markdown-paragraph\">Specific Gravity (S.G.) kits are essential tools for measuring a gemstone&#8217;s density, a key identifying property. At the Razi Gemological Institute, these precise hydrostatic weighing kits provide a non-destructive and highly diagnostic test. By comparing the gem&#8217;s weight in air versus in water, experts can calculate its specific gravity, a definitive value that helps distinguish between gem species with similar appearance but different densities, such as citrine and topaz, or to confirm the identity of materials like amber. This method is a cornerstone of Razi&#8217;s rigorous and conclusive identification protocol.<\/p><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2b2c051 e-con-full e-flex e-con e-child\" data-id=\"2b2c051\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-05b251b elementor-widget elementor-widget-image\" data-id=\"05b251b\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"574\" height=\"1024\" src=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/S.Gkits_.jpg\" class=\"attachment-large size-large wp-image-1900\" alt=\"\" srcset=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/S.Gkits_.jpg 574w, https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/S.Gkits_-168x300.jpg 168w, https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/S.Gkits_-7x12.jpg 7w\" sizes=\"(max-width: 574px) 100vw, 574px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-28405db e-con-full e-flex e-con e-parent\" data-id=\"28405db\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-52d90c7 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"52d90c7\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6c60b1f e-flex e-con-boxed e-con e-parent\" data-id=\"6c60b1f\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-21fe83e e-con-full e-flex e-con e-child\" data-id=\"21fe83e\" data-element_type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-2e17d71 e-con-full e-flex e-con e-child\" data-id=\"2e17d71\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5af116a elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"5af116a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p style=\"language: en-US; line-height: 200%; margin-top: 0pt; margin-bottom: 8.0pt; margin-left: 0in; text-align: center; direction: ltr; unicode-bidi: embed; mso-line-break-override: none; word-break: normal; punctuation-wrap: hanging;\"><span style=\"font-size: 20.0pt; font-family: 'Arial Narrow'; mso-ascii-font-family: 'Arial Narrow'; mso-fareast-font-family: Aptos; mso-bidi-font-family: 'B Homa'; color: #404040; mso-color-index: 1; mso-font-kerning: 1.0pt; language: en-US; font-weight: bold; mso-style-textfill-type: solid; mso-style-textfill-fill-themecolor: text1; mso-style-textfill-fill-color: #404040; mso-style-textfill-fill-alpha: 100.0%; mso-style-textfill-fill-colortransforms: 'lumm=75000 lumo=25000';\">In air and immersion liquid\u00a0 to identify solid inclusion, fluid inclusion and internal pattern in gemstones<\/span><\/p>\n\n<div class=\"ds-flex _0a3d93b\">\n<div class=\"ds-flex _965abe9 _54866f7\">\n<div class=\"db183363 ds-icon-button ds-icon-button--m ds-icon-button--sizing-container\" tabindex=\"0\" role=\"button\" aria-disabled=\"false\">\n<div class=\"_4f9bf79 d7dc56a8 _43c05b5\">\n<div class=\"ds-message _63c77b1\">\n<div class=\"ds-markdown\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-da5b1b9 e-con-full e-flex e-con e-child\" data-id=\"da5b1b9\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0654057 elementor-widget elementor-widget-image\" data-id=\"0654057\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/magnifition1.jpg\" class=\"attachment-large size-large wp-image-1901\" alt=\"\" srcset=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/magnifition1.jpg 1024w, https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/magnifition1-300x225.jpg 300w, https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/magnifition1-768x576.jpg 768w, https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/magnifition1-16x12.jpg 16w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bfd2413 elementor-widget elementor-widget-image\" data-id=\"bfd2413\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/magnification2.jpg\" class=\"attachment-large size-large wp-image-1902\" alt=\"\" srcset=\"https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/magnification2.jpg 1024w, https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/magnification2-300x225.jpg 300w, https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/magnification2-768x576.jpg 768w, https:\/\/rms-labgroup.com\/wp-content\/uploads\/2026\/06\/magnification2-16x12.jpg 16w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>RGS Diamond Color Grading The RGS laboratory uses a GIA-certified natural diamonds master stones to color grading. Color grading is one of the most critical factors in determining a diamond\u2019s beauty and value. The subtle differences between grades especially in the near-colorless range can be extremely difficult to detect without proper comparison. This is why [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":821,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-2895","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Classical Gemology - RMS Lab Group<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Classical Gemology - RMS Lab Group\" \/>\n<meta property=\"og:description\" content=\"RGS Diamond Color Grading The RGS laboratory uses a GIA-certified natural diamonds master stones to color grading. Color grading is one of the most critical factors in determining a diamond\u2019s beauty and value. The subtle differences between grades especially in the near-colorless range can be extremely difficult to detect without proper comparison. 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Color grading is one of the most critical factors in determining a diamond\u2019s beauty and value. The subtle differences between grades especially in the near-colorless range can be extremely difficult to detect without proper comparison. 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