[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-1-en-105":3,"doc-seo-564470-105":53,"doc-detail-564470-en":127},{"code":4,"msg":5,"data":6},0,"success",[7,14,19,24,29,34,39,44,49],{"id":8,"doc_module":9,"doc_module_name":10,"category_name":11,"show_sort_weight":12,"slug":13},11,1,"Template","Presentations",90,"presentations",{"id":15,"doc_module":9,"doc_module_name":10,"category_name":16,"show_sort_weight":17,"slug":18},12,"Resumes",80,"resumes",{"id":20,"doc_module":9,"doc_module_name":10,"category_name":21,"show_sort_weight":22,"slug":23},14,"Invoices",70,"invoices",{"id":25,"doc_module":9,"doc_module_name":10,"category_name":26,"show_sort_weight":27,"slug":28},15,"Posters",60,"posters",{"id":30,"doc_module":9,"doc_module_name":10,"category_name":31,"show_sort_weight":32,"slug":33},16,"Social Media",50,"social-media",{"id":35,"doc_module":9,"doc_module_name":10,"category_name":36,"show_sort_weight":37,"slug":38},17,"Forms",40,"forms",{"id":40,"doc_module":9,"doc_module_name":10,"category_name":41,"show_sort_weight":42,"slug":43},18,"Letters",30,"letters",{"id":45,"doc_module":9,"doc_module_name":10,"category_name":46,"show_sort_weight":47,"slug":48},21,"Paper Templates",5,"papers-templates",{"id":50,"doc_module":9,"doc_module_name":10,"category_name":51,"show_sort_weight":4,"slug":52},158,"General","general-158",{"code":4,"msg":54,"data":55},"ok",{"site_id":56,"language":57,"slug":58,"title":59,"keywords":60,"description":61,"schema_data":62,"social_meta":120,"head_meta":122,"extra_data":124,"updated_unix":126},105,"en","diamond-grading-standard-testing-and-certification-methods","Diamond Grading Standard - Testing and Certification Methods","","This document outlines the standard methods for testing and grading diamonds, providing a comprehensive framework for authenticity and quality assessment. It covers the fundamental 4Cs of diamond grading—Carat, Colour, Clarity, and Cut—while detailing specific procedures for physical measurements and technical analysis. The guide references industry-standard regulations, including the Trade Description Ordinance (Hong Kong Law Chapter 362K & 362L), and categorizes various diamond types, ranging from natural stones to synthetic variants and simulants, ensuring rigorous adherence to international grading benchmarks and material certification protocols.",{"@graph":63,"@context":119},[64,80,102],{"@type":65,"itemListElement":66},"BreadcrumbList",[67,71,74,77],{"item":68,"name":69,"@type":70,"position":9},"https://docshare.wps.com","Home","ListItem",{"item":72,"name":10,"@type":70,"position":73},"https://docshare.wps.com/template/",2,{"item":75,"name":51,"@type":70,"position":76},"https://docshare.wps.com/template/general/",3,{"item":78,"name":59,"@type":70,"position":79},"https://docshare.wps.com/template/diamond-grading-standard-testing-and-certification-methods/564470/",4,{"url":78,"name":59,"@type":81,"image":82,"author":87,"headline":59,"publisher":90,"fileFormat":93,"inLanguage":57,"description":61,"dateModified":94,"datePublished":95,"encodingFormat":93,"isAccessibleForFree":96,"interactionStatistic":97},"DigitalDocument",{"url":83,"@type":84,"width":85,"height":86},"https://docshare.wps.com/thumbnails/diamond-grading-standard-testing-and-certification-methods/564470.png","ImageObject",442,249,{"name":88,"@type":89},"EvelynWrites","Person",{"url":68,"name":91,"@type":92},"DocShare","Organization","application/pdf","2026-10-28","2026-10-12",true,{"@type":98,"interactionType":99,"userInteractionCount":101},"InteractionCounter",{"@type":100},"ViewAction",10,{"@type":103,"mainEntity":104},"FAQPage",[105,111,115],{"name":106,"@type":107,"acceptedAnswer":108},"What are the 4Cs of diamond grading?","Question",{"text":109,"@type":110},"The 4Cs refer to Carat (weight), Colour, Clarity, and Cut, which are the fundamental criteria used to assess the quality and value of a diamond.","Answer",{"name":112,"@type":107,"acceptedAnswer":113},"What types of diamonds are covered in the grading standards?",{"text":114,"@type":110},"The document covers natural diamonds, clarity-treated diamonds (laser-drilled or fracture-filled), colour-treated diamonds (irradiation or HPHT treated), synthetic diamonds (CVD), and diamond simulants.",{"name":116,"@type":107,"acceptedAnswer":117},"What regulatory standards are mentioned in the document?",{"text":118,"@type":110},"The document references the Trade Description Ordinance HK Law Chapter 362K & 362L concerning Fei Cui and diamonds, as well as ISO 17034 for reference material producers.","https://schema.org",{"og:url":78,"og:type":121,"og:title":59,"og:site_name":91,"og:description":61},"article",{"robots":123,"canonical":78},"index,follow",{"doc_id":125,"site_id":56},564470,1792109534,{"code":4,"msg":5,"data":128},{"doc_id":125,"user_id":129,"nickname":88,"user_avatar":130,"doc_module":9,"category_id":50,"category_name":51,"doc_title":59,"doc_description":61,"doc_content":131,"file_id":132,"file_url":133,"file_type":134,"file_size":135,"view_count":101,"is_deleted":4,"is_public":9,"is_downloadable":9,"audit_status":9,"page_count":136,"language":137,"language_code":57,"site_id":56,"html_lang":57,"table_of_contents":138,"faqs":139,"seo_title":140,"seo_description":61,"update_tm":141,"read_time":142},687212989558,"https://ap-avatar.wpscdn.com/davatar_a8503ba1806abce46bf441b54a3ca4cd","4/12/2021  \n2008-02-28 Edition  \nDiamond Grading Standard  \n4/12/2021  \nTrade Description Ordinance HK Law Chapter 362K & 362L Fei Cui and Diamond  \n4/12/2021  \n4/12/2021  \n|  | De Beers – Diamond Trading Company DTC |  |  |  |\n| --- | --- | --- | --- | --- |\n|  |  |  |  |  |\n|  |  | Chaterhouse, Holborn, London |  |  |\n|  |  |  |  |  |\n| |  |  |  |  |\n\n4/12/2021  \n| Certificate of Authenticity |  | \u003Cbr>De Beers-Oppenheimer |  |\n| --- | --- | --- | --- |\n|  |  |  |  |\n| |  |  |  |\n\n4/12/2021  \nISO 17034:  \nRef Material Producer  \n33  \n4/12/2021  \n4/12/2021  \n4/12/2021  \n製定鑽石切割分析儀的校正  \n4/12/2021  \nNatural Diamond 天然鑽石  \nClarity Treated Diamond淨澈度改造鑽石 Laser drilled or Fracture filled  \nColour Treated Diamond顏色改造鑽石 Irradiation or HPHT treated  \nSynthetic Diamond人造鑽石-CVD  \nDiamond Simulant 鑽石彷製品  \nNatural Diamond 天然鑽石 Major Physical Property of Diamond  \n|  | Diamond Testing and Grading Standard Method |  |\n| --- | --- | --- |\n| |  |  |\n\nThe 4 “C”Grading of Diamond","cbCailkw7O1dpEnq","https://ap.wps.com/l/cbCailkw7O1dpEnq","pdf",1040233,22,"English","# Diamond Testing and Grading Standard Method\n## Authenticity Identification\n## The 4 \"C\"s Grading\n- Weight Measurement\n- Colour Grading\n- Fluorescence\n- Clarity Grading\n- Shape & Cutting Style\n- Cut Grading","[{\"question\":\"What are the 4Cs of diamond grading?\",\"answer\":\"The 4Cs refer to Carat (weight), Colour, Clarity, and Cut, which are the fundamental criteria used to assess the quality and value of a diamond.\"},{\"question\":\"What types of diamonds are covered in the grading standards?\",\"answer\":\"The document covers natural diamonds, clarity-treated diamonds (laser-drilled or fracture-filled), colour-treated diamonds (irradiation or HPHT treated), synthetic diamonds (CVD), and diamond simulants.\"},{\"question\":\"What regulatory standards are mentioned in the document?\",\"answer\":\"The document references the Trade Description Ordinance HK Law Chapter 362K \\u0026 362L concerning Fei Cui and diamonds, as well as ISO 17034 for reference material producers.\"}]","Diamond Grading Standard - Testing and Certification Methods | PDF",1791842426,8]