{"id":4348,"date":"2015-06-09T08:00:23","date_gmt":"2015-06-09T12:00:23","guid":{"rendered":"http:\/\/admin.acceleratingscience.com\/?p=4348"},"modified":"2026-01-06T18:48:32","modified_gmt":"2026-01-06T18:48:32","slug":"video-how-does-a-lab-grade-diamonds","status":"publish","type":"post","link":"https:\/\/www.thermofisher.com\/blog\/mining\/video-how-does-a-lab-grade-diamonds\/","title":{"rendered":"Video:  How Does a Lab Grade Diamonds?"},"content":{"rendered":"<p><a href=\"http:\/\/www.gemfacts.com\/VideoTour.aspx\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" style=\"float: right;border: 0;margin: 10px\" title=\"GCAL Video\" src=\"http:\/\/admin.acceleratingscience.com\/wp-content\/uploads\/2015\/06\/gcalvideo.jpg\" alt=\"GCAL Video\" width=\"350\" height=\"241\" \/><\/a>Did you ever wonder how those mined chains of carbon atoms that have crystallized become the stars of engagement rings, necklaces, bracelets and even crowns? They were formed in the earth over the course of thousands of years, under crushing pressures and intense heat, and yet they have emerged as showcase pieces in jewelry stores.\u00a0 After the diamond-bearing ore is crushed and processed, the rough diamonds are sorted into three categories: gem quality, industrial quality, and boart (used as an abrasive in cutting tools).  The gem-quality diamonds are then classified, and valued, according to the 4 C\u2019s of diamond quality. This accredited gem certification and assurance laboratory shows how those 4 C\u2019s are determined: <\/p>\n<ul>\n<li><strong>Carat<\/strong>:\u00a0 Weight: Precise measurement of carat weight using electronic balances to a thousandth of a carat and then measured with an optical scanning device that creates a diagram of every facet and angle.<\/li>\n<li><strong>Color:<\/strong>\u00a0 Color is graded on a scale from D to Z with each letter representing a slightly more saturated color.\u00a0 Diamonds are examined in a standard lighting environment and are compared to a set of precision master color diamonds.\u00a0 It takes an expert eye rather than technology to grade the color.\u00a0 The diamonds are also checked for fluorescence, which is a permanent identifying characteristic of the diamond.<\/li>\n<li><strong>Clarity:<\/strong> Clarity is graded by examining the diamond under a microcope to assess internal and external characteristics such as crystals and feathers.\u00a0 Gemologists also note inclusions, including the number, type, position and relief.\u00a0 A 10X loupe is also used to view the diamond in several different positions.<\/li>\n<li><strong>Cut:<\/strong>\u00a0 A light performance analysis system can assess and capture an image of the diamond\u2019s optical brilliance and optical symmetry.<\/li>\n<\/ul>\n<p> Although portable X-Ray Fluorescence cannot measure carbon, the technology can be deployed to measure Zr, and thus, to distinguish between the diamond look-alike, cubic zirconia, and real diamonds. In addition, the non-destructive <a href=\"http:\/\/www.thermoscientific.com\/en\/product\/niton-dxl-precious-metal-analyzer.html\">technology<\/a> can be used to analyze the composition of any metal-based jewelry.  And what happens to those diamonds that do not meet gem-quality standards for color, clarity, size, or shape?\u00a0 They are used principally as an abrasive, and are termed &#8220;industrial diamond.&#8221; They may not be as \u2018pretty\u2019 or \u2018brilliant\u2019 but <a href=\"http:\/\/admin.acceleratingscience.com\/mining\/industrial-diamonds-as-good-as-gemstones-or-better\/\">industrial diamonds<\/a> have proven to be more cost effective in numerous industrial processes because they cut faster and last longer than any rival material. The <a href=\"http:\/\/minerals.usgs.gov\/minerals\/pubs\/commodity\/diamond\/index.html\">U.S. Geological Survey<\/a> declares diamonds \u201cmay well be the world&#8217;s most versatile engineering material as well as its most famous gemstone.\u201d  And maybe even a <a href=\"http:\/\/www.tcm.com\/mediaroom\/video\/497401\/Gentlemen-Prefer-Blondes-Movie-Clip-Diamonds-Are-A-Girls-s-Best-Friend.html\">girl\u2019s best friend<\/a>.*  View <a href=\"http:\/\/www.gemfacts.com\/VideoTour.aspx\"><em>The Journey of your Diamond\u2019s GCAL Process<\/em><\/a><em> video.<\/em>  &nbsp;  <em>*Marilyn Monroe&#8217;s birthday: June 1st<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Did you ever wonder how those mined chains of carbon atoms that have crystallized become the stars of engagement rings, necklaces, bracelets and even crowns? They were formed in the earth over the course of thousands of years, under crushing pressures and intense heat, and yet they have emerged as showcase pieces in jewelry stores.\u00a0<\/p>\n","protected":false},"author":40,"featured_media":9072,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_monsterinsights_skip_tracking":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[225],"tags":[],"division":[],"class_list":{"0":"post-4348","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-general","8":"entry"},"_selected_authors":[1206],"_selected_reviewers":[],"acf":[],"yoast_head":"<!-- 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Some have been around for quite awhile, but are still as relevant as ever. If you missed any of the latest articles, just click\u00a0here\u00a0to see the most recently published articles. You can even filter by\u2026","rel":"","context":"In &quot;General\/Industry&quot;","block_context":{"text":"General\/Industry","link":"https:\/\/admin.acceleratingscience.com\/mining\/general-industry-mining\/"},"img":{"alt_text":"Top 10, words, isolated on a dark blue background. Alphabet on stone blocks.Rating. Rating concept. 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Online gas analysis using process mass spectrometry provides real-time, multicomponent measurements that can help operators monitor methane, carbon dioxide, moisture, sulfur compounds and methane slip while improving visibility into\u2026","rel":"","context":"In &quot;Oil and Gas&quot;","block_context":{"text":"Oil and Gas","link":"https:\/\/admin.acceleratingscience.com\/mining\/oil-and-gas\/"},"img":{"alt_text":"Biogas production, biogas plant, bio power","src":"https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2026\/10\/iStock-2167149558_biogas.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2026\/10\/iStock-2167149558_biogas.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2026\/10\/iStock-2167149558_biogas.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2026\/10\/iStock-2167149558_biogas.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2026\/10\/iStock-2167149558_biogas.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2026\/10\/iStock-2167149558_biogas.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":14123,"url":"https:\/\/www.thermofisher.com\/blog\/mining\/why-coal-chemistry-matters-in-coal-fired-power-generation\/","url_meta":{"origin":4348,"position":2},"title":"Why Coal Chemistry Matters in Coal-Fired Power Generation\u00a0","author":"Marlene Gasdia-Cochrane","date":"July 28, 2026","format":false,"excerpt":"Summary For coal manufacturers, product quality extends far beyond tonnage and\u00a0logistics. The chemical characteristics of coal directly influence power plant efficiency, emissions performance, maintenance requirements, and overall operating costs. As utilities continue to focus on fuel optimization and regulatory compliance, understanding coal chemistry has become essential for suppliers\u00a0seeking\u00a0to deliver value\u2026","rel":"","context":"In &quot;Coal&quot;","block_context":{"text":"Coal","link":"https:\/\/admin.acceleratingscience.com\/mining\/coal\/"},"img":{"alt_text":"Stone coal lump in scientist hand","src":"https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2026\/07\/iStock-1371922462_coallab.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2026\/07\/iStock-1371922462_coallab.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2026\/07\/iStock-1371922462_coallab.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2026\/07\/iStock-1371922462_coallab.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2026\/07\/iStock-1371922462_coallab.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2026\/07\/iStock-1371922462_coallab.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":14089,"url":"https:\/\/www.thermofisher.com\/blog\/mining\/why-real-time-monitoring-is-transforming-refined-fuel-quality-control\/","url_meta":{"origin":4348,"position":3},"title":"Why Real-Time Monitoring Is Transforming Refined Fuel Quality Control","author":"Marlene Gasdia-Cochrane","date":"July 21, 2026","format":false,"excerpt":"Article Summary Refinery operations depend on precise control of fuel properties. Whether producing gasoline, diesel, jet fuel, or base oils, even small variations can impact product performance, regulatory compliance, and profitability. Traditionally, fuel quality has been verified through a combination of laboratory testing and online analyzers. While these methods are\u2026","rel":"","context":"In &quot;Oil and Gas&quot;","block_context":{"text":"Oil and Gas","link":"https:\/\/admin.acceleratingscience.com\/mining\/oil-and-gas\/"},"img":{"alt_text":"Aerial view of oil refinery and storage tanks at dusk and night, showcasing energy industry infrastructure, petroleum processing, and industrial landscape.","src":"https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2026\/07\/iStock-2274125977-scaled.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2026\/07\/iStock-2274125977-scaled.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2026\/07\/iStock-2274125977-scaled.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2026\/07\/iStock-2274125977-scaled.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2026\/07\/iStock-2274125977-scaled.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2026\/07\/iStock-2274125977-scaled.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":13488,"url":"https:\/\/www.thermofisher.com\/blog\/mining\/the-role-of-edxrf-spectrometers-in-the-extraction-of-copper-from-ore\/","url_meta":{"origin":4348,"position":4},"title":"The Role of EDXRF Spectrometers in the Extraction of Copper from Ore","author":"Marlene Gasdia-Cochrane","date":"November 4, 2025","format":false,"excerpt":"Copper extraction is a complex process requiring precise control to ensure high purity. Energy Dispersive X-ray Fluorescence (EDXRF) spectrometers play a vital role by providing fast, non-destructive elemental analysis of ores, concentrates, and intermediate products. This enables mining operations to optimize extraction efficiency, maintain quality assurance, and meet stringent industry\u2026","rel":"","context":"In &quot;Elemental\/Geochemical Analysis&quot;","block_context":{"text":"Elemental\/Geochemical Analysis","link":"https:\/\/admin.acceleratingscience.com\/mining\/elemental-geochemical-analysis\/"},"img":{"alt_text":"a rock showing signs of copper and gold.","src":"https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2025\/10\/iStock-1309478061.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2025\/10\/iStock-1309478061.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2025\/10\/iStock-1309478061.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2025\/10\/iStock-1309478061.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2025\/10\/iStock-1309478061.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2025\/10\/iStock-1309478061.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":13977,"url":"https:\/\/www.thermofisher.com\/blog\/mining\/what-is-in-situ-geochemical-analysis-and-why-it-is-critical-for-modern-field-operations\/","url_meta":{"origin":4348,"position":5},"title":"What Is In Situ Geochemical Analysis \u2014 And Why It Is Critical for Modern Field Operations","author":"Marlene Gasdia-Cochrane","date":"March 13, 2026","format":false,"excerpt":"In situ geochemical analysis has become a cornerstone of modern mineral exploration, mining, and environmental fieldwork. As project timelines tighten and operational costs increase, organizations can no longer afford delays caused by traditional laboratory testing workflows. In situ analysis \u2014 the ability to measure elemental composition directly at the sampling\u2026","rel":"","context":"In &quot;Exploration&quot;","block_context":{"text":"Exploration","link":"https:\/\/admin.acceleratingscience.com\/mining\/exploration\/"},"img":{"alt_text":"Close up of industrial worker holding mineral ore in gloved hands on mining site","src":"https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2026\/03\/iStock-896157842.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2026\/03\/iStock-896157842.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2026\/03\/iStock-896157842.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2026\/03\/iStock-896157842.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2026\/03\/iStock-896157842.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2026\/03\/iStock-896157842.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]}],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/admin.acceleratingscience.com\/mining\/wp-content\/uploads\/sites\/3\/2016\/04\/gcalvideo.jpg","_links":{"self":[{"href":"https:\/\/www.thermofisher.com\/blog\/mining\/wp-json\/wp\/v2\/posts\/4348","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.thermofisher.com\/blog\/mining\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.thermofisher.com\/blog\/mining\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.thermofisher.com\/blog\/mining\/wp-json\/wp\/v2\/users\/40"}],"replies":[{"embeddable":true,"href":"https:\/\/www.thermofisher.com\/blog\/mining\/wp-json\/wp\/v2\/comments?post=4348"}],"version-history":[{"count":0,"href":"https:\/\/www.thermofisher.com\/blog\/mining\/wp-json\/wp\/v2\/posts\/4348\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.thermofisher.com\/blog\/mining\/wp-json\/wp\/v2\/media\/9072"}],"wp:attachment":[{"href":"https:\/\/www.thermofisher.com\/blog\/mining\/wp-json\/wp\/v2\/media?parent=4348"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.thermofisher.com\/blog\/mining\/wp-json\/wp\/v2\/categories?post=4348"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.thermofisher.com\/blog\/mining\/wp-json\/wp\/v2\/tags?post=4348"},{"taxonomy":"division","embeddable":true,"href":"https:\/\/www.thermofisher.com\/blog\/mining\/wp-json\/wp\/v2\/division?post=4348"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}