{"id":2103,"date":"2026-10-23T04:32:53","date_gmt":"2026-10-23T04:32:53","guid":{"rendered":"https:\/\/oecler.com\/?p=2103"},"modified":"2026-10-23T04:32:53","modified_gmt":"2026-10-23T04:32:53","slug":"lab-grown-diamond-certificate-igi-ngtc-agl","status":"publish","type":"post","link":"https:\/\/oecler.com\/zh\/lab-grown-diamond-certificate-igi-ngtc-agl\/","title":{"rendered":"\u57f9\u80b2\u94bb\u77f3\u6709\u8bc1\u4e66\u5417\uff1fOecler \u7684 IGI\u3001NGTC \u4e0e AGL \u8bf4\u660e"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Oecler \u9ed8\u8ba4\u4e0d\u9644\u8bc1\u4e66\u3002\u53ef\u6309\u9700\uff1a\u6210\u54c1\u9996\u9970\u53ef\u7533\u8bf7 NGTC \u62a5\u544a\uff08\u7ea6 3 \u5929\uff0c\u514d\u8d39\uff09\uff0c\u88f8\u77f3\u57f9\u80b2\u94bb\u77f3\u53ef\u7533\u8bf7 IGI \u62a5\u544a\uff08\u5728\u6b63\u5e38\u5236\u4f5c\u65f6\u95f4\u4e0a\u53e6\u52a0\u7ea6 20 \u5929\uff0c\u8d39\u7528 $50\uff09\uff0c\u88f8\u77f3\u57f9\u80b2\u5f69\u8272\u5b9d\u77f3\u53ef\u7533\u8bf7 AGL \u62a5\u544a\uff08\u7ea6 3 \u5929\uff0c\u514d\u8d39\uff09\u3002\u672c\u6307\u5357\u8bf4\u660e\u4f55\u65f6\u7533\u8bf7\u62a5\u544a\u3001\u5b83\u5982\u4f55\u5f71\u54cd\u5de5\u671f\uff0c\u4ee5\u53ca\u62a5\u544a\u5230\u624b\u540e\u5982\u4f55\u6838\u5bf9\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b80\u77ed\u56de\u7b54<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u60a8\u5728 Oecler \u8d2d\u4e70\u7684\u662f<\/th><th>\u53ef\u6309\u9700\u63d0\u4f9b\u62a5\u544a<\/th><th>\u989d\u5916\u65f6\u95f4<\/th><th>\u8d39\u7528<\/th><th>\u662f\u5426\u9ed8\u8ba4\u9644\u5e26\uff1f<\/th><\/tr><\/thead><tbody>\n<tr><td>\u6210\u54c1\u9996\u9970\uff08\u6212\u6307\u3001\u8033\u73af\u3001\u9879\u94fe\uff09<\/td><td>NGTC<\/td><td>\u7ea6 3 \u5929<\/td><td>\u514d\u8d39<\/td><td>No<\/td><\/tr>\n<tr><td>\u88f8\u77f3\u57f9\u80b2\u94bb\u77f3<\/td><td>IGI<\/td><td>\u7ea6 20 \u5929\uff0c\u53e0\u52a0\u5728\u6b63\u5e38\u5236\u4f5c\u65f6\u95f4\u4e4b\u4e0a<\/td><td>$50<\/td><td>No<\/td><\/tr>\n<tr><td>\u88f8\u77f3\u57f9\u80b2\u5f69\u8272\u5b9d\u77f3<\/td><td>AGL<\/td><td>\u7ea6 3 \u5929<\/td><td>\u514d\u8d39<\/td><td>No<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 Oecler\uff0c\u62a5\u544a\u662f\u60a8\u7533\u8bf7\u7684\uff0c\u800c\u4e0d\u662f\u81ea\u52a8\u9644\u4e0a\u7684\u3002\u82e5\u6682\u65f6\u4e0d\u9700\u8981\uff0c\u53ef\u4ee5\u5148\u4e0d\u7533\u8bf7\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u300c\u8bc1\u4e66\u300d\u8fd8\u662f\u300c\u5206\u7ea7\u62a5\u544a\u300d\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u987e\u5ba2\u5e38\u8bf4\u300c\u8bc1\u4e66\u300d\uff0c\u4f46 IGI \u6307\u51fa\uff0c\u5e38\u88ab\u79f0\u4f5c\u8bc1\u4e66\u7684\u6587\u4ef6\u66f4\u51c6\u786e\u5730\u8bf4\u662f\u5206\u7ea7\u62a5\u544a\uff1a<a href=\"https:\/\/www.igi.org\/reports\/\" target=\"_blank\" rel=\"noopener\">IGI<\/a>). A report records a lab&#8217;s opinion of a specific stone or piece at the time it was examined (<a href=\"https:\/\/www.igi.org\/Verify-Your-Report\/\" target=\"_blank\" rel=\"noopener\">IGI<\/a>). IGI&#8217;s lab-grown diamond report documents the stone&#8217;s laboratory-grown origin, its color, clarity, cut and carat weight, and its measurements. On request, IGI also notes the growth method and any treatments in the report&#8217;s comments section (<a href=\"https:\/\/www.igi.org\/reports\/lab-grown-diamond-report\/\" target=\"_blank\" rel=\"noopener\">IGI<\/a>).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u62a5\u544a\u4e0d\u4f1a\u8ba9\u5b9d\u77f3\u66f4\u597d\u6216\u66f4\u5dee\u3002\u5b83\u662f\u5bf9\u5b9d\u77f3\u672c\u8eab\u7684\u72ec\u7acb\u8bb0\u5f55\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u5b9e\u9a8c\u5ba4\u62a5\u544a\u5bf9\u57f9\u80b2\u94bb\u77f3\u6709\u7528<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u57f9\u80b2\u94bb\u77f3\u8089\u773c\u65e0\u6cd5\u4e0e\u5929\u7136\u94bb\u77f3\u533a\u5206\u3002GIA \u8bf4\u660e HPHT \u4e0e CVD \u57f9\u80b2\u94bb\u77f3\u4e0e\u5929\u7136\u94bb\u77f3\u51e0\u4e4e\u76f8\u540c\uff0c\u5dee\u5f02\u901a\u5e38\u53ea\u5728\u53d7\u63a7\u5b9e\u9a8c\u5ba4\u6761\u4ef6\u4e0b\u624d\u80fd\u68c0\u51fa\u3002<a href=\"https:\/\/4cs.gia.edu\/interactive-4cs\/more-diamond-info\/synthetics.html\" target=\"_blank\" rel=\"noopener\">GIA 4Cs<\/a>). GIA also notes that most lab-grown diamonds are made by one of these two methods, and that many CVD diamonds are treated after growth to improve their color (<a href=\"https:\/\/www.gia.edu\/hpht-and-cvd-diamond-growth-processes\" target=\"_blank\" rel=\"noopener\">GIA<\/a>). A lab report puts the stone&#8217;s identity and characteristics on paper, so you don&#8217;t have to rely only on the seller&#8217;s description.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u88f8\u77f3\u57f9\u80b2\u94bb\u77f3\u7684 IGI \u62a5\u544a<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bf9\u88f8\u77f3\u57f9\u80b2\u94bb\u77f3\uff0cOecler \u53ef\u6309\u9700\u5b89\u6392 IGI \u62a5\u544a\u3002\u5b9e\u52a1\u4e0a\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>\u8d39\u7528\uff1a<\/strong> $50 per stone.<\/li><li><strong>\u65f6\u95f4\uff1a<\/strong> \u5728\u6b63\u5e38\u5236\u4f5c\u65f6\u95f4\u4e0a\u53e6\u52a0\u7ea6 20 \u5929\u3002<\/li><li><strong>\u6838\u9a8c\uff1a<\/strong> IGI \u62a5\u544a\u53ef\u51ed\u62a5\u544a\u7f16\u53f7\u5728 IGI \u7684 <a href=\"https:\/\/www.igi.org\/Verify-Your-Report\/\" target=\"_blank\" rel=\"noopener\">Verify Your Report<\/a> page.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Oecler \u73b0\u8d27\u88f8\u77f3\u7ea6 3 \u5929\u5185\u53d1\u8d27\uff0c\u56e0\u6b64 IGI \u62a5\u544a\u662f\u53e0\u52a0\u5728\u6b63\u5e38\u5236\u4f5c\u65f6\u95f4\u4e4b\u4e0a\u7684\u4e3b\u8981\u989d\u5916\u7b49\u5f85\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u6210\u54c1\u9996\u9970\u7684 NGTC \u62a5\u544a<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bf9\u6210\u54c1\u9996\u9970\uff0cOecler \u53ef\u6309\u9700\u5b89\u6392 NGTC \u62a5\u544a\u3002\u7ea6\u9700 3 \u5929\uff0c\u514d\u8d39\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u88f8\u77f3\u57f9\u80b2\u5f69\u8272\u5b9d\u77f3\u7684 AGL \u62a5\u544a<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bf9\u88f8\u77f3\u57f9\u80b2\u5f69\u8272\u5b9d\u77f3\uff08\u5982\u57f9\u80b2\u84dd\u5b9d\u77f3\uff09\uff0cOecler \u53ef\u6309\u9700\u5b89\u6392 AGL \u62a5\u544a\u3002\u7ea6\u9700 3 \u5929\uff0c\u514d\u8d39\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6309\u7f8e\u56fd FTC \u73e0\u5b9d\u6307\u5357\uff0c\u5b9e\u9a8c\u5ba4\u57f9\u80b2\u5b9d\u77f3\u5fc5\u987b\u4ee5\u4e0d\u4f1a\u8ba9\u4eba\u8bef\u4ee5\u4e3a\u662f\u77ff\u91c7\u7684\u65b9\u5f0f\u63cf\u8ff0\uff0c\u4f8b\u5982\u6e05\u695a\u4f7f\u7528\u300c\u5b9e\u9a8c\u5ba4\u57f9\u80b2\u300d\u6216\u540c\u7b49\u7528\u8bed\u3002<a href=\"https:\/\/www.ftc.gov\/business-guidance\/resources\/loupe-advertising-diamond-gemstones-pearls\" target=\"_blank\" rel=\"noopener\">FTC<\/a>). Oecler describes all of its colored gemstones as lab-grown.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7533\u8bf7\u62a5\u544a\u5982\u4f55\u5f71\u54cd\u5de5\u671f\uff08\u7ea6\u6570\uff09<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u8ba2\u5355<\/th><th>\u4e0d\u9644\u62a5\u544a<\/th><th>\u9644\u62a5\u544a<\/th><\/tr><\/thead><tbody>\n<tr><td>\u73b0\u8d27\u88f8\u77f3\u57f9\u80b2\u94bb\u77f3<\/td><td>\u7ea6 3 \u5929\u5185\u53d1\u8d27<\/td><td>\u7ea6 3 \u5929 + \u7ea6 20 \u5929\uff08IGI\uff09<\/td><\/tr>\n<tr><td>\u65e0\u8d27\u88f8\u77f3\u57f9\u80b2\u94bb\u77f3\uff0c\u6309\u5355\u5207\u78e8<\/td><td>\u7ea6 2 \u5468\u53d1\u8d27<\/td><td>\u7ea6 2 \u5468 + \u7ea6 20 \u5929\uff08IGI\uff09<\/td><\/tr>\n<tr><td>\u88f8\u77f3\u57f9\u80b2\u5f69\u8272\u5b9d\u77f3<\/td><td>\u89c6\u5e93\u5b58\u60c5\u51b5<\/td><td>\u53e6\u52a0\u7ea6 3 \u5929\uff08AGL\uff09<\/td><\/tr>\n<tr><td>\u6309\u5355\u5b9a\u5236\u9996\u9970<\/td><td>3\u20135 \u5468\uff0c\u5176\u540e\u5728\u9014 7\u201310 \u5929<\/td><td>\u53e6\u52a0\u7ea6 3 \u5929\uff08NGTC\uff09<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Oecler \u5411\u7f8e\u56fd\u3001\u82f1\u56fd\u4e0e\u6fb3\u5927\u5229\u4e9a\u514d\u8d39 DDP \u914d\u9001\u6240\u6709\u9996\u9970\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u60a8\u9700\u8981\u62a5\u544a\u5417\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u4ee5\u4e0b\u60c5\u51b5\u4e0b\uff0c\u503c\u5f97\u7533\u8bf7\u62a5\u544a\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u5e0c\u671b\u4e3a\u88f8\u77f3\u7279\u5f81\u53d6\u5f97\u72ec\u7acb\u6587\u4ef6\uff0c<\/li><li>\u8ba1\u5212\u4e3a\u4f5c\u54c1\u6295\u4fdd\uff0c\u4e14\u4fdd\u9669\u516c\u53f8\u8981\u6c42\u6587\u4ef6\uff0c\u6216<\/li><li>\u60f3\u6838\u5bf9\u6536\u5230\u7684\u5b9d\u77f3\u4e0e\u63cf\u8ff0\u662f\u5426\u4e00\u81f4\u3002<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u82e5\u65f6\u95f4\u66f4\u91cd\u8981\u2014\u2014\u4f8b\u5982\u60a8\u5e0c\u671b\u73b0\u8d27\u88f8\u77f3\u5c3d\u5feb\u53d1\u51fa\u2014\u2014\u4e0d\u7533\u8bf7\u62a5\u544a\u4e5f\u53ef\u80fd\u5408\u7406\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u65e0\u8bba\u54ea\u79cd\uff0c\u8bf7\u51b3\u5b9a <strong>before<\/strong> you order. At Oecler, loose stones and custom pieces are final sale.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u62a5\u544a\u5230\u624b\u540e\u8981\u6838\u5bf9\u4ec0\u4e48<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u60a8\u7684 Oecler \u8ba2\u5355\u968f\u62a5\u544a\u9001\u8fbe\u65f6\uff0c\u8bf7\u82b1\u4e94\u5206\u949f\u6838\u5bf9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li><strong>\u62a5\u544a\u7f16\u53f7\uff1a<\/strong> for IGI, enter it on IGI&#8217;s <a href=\"https:\/\/www.igi.org\/Verify-Your-Report\/\" target=\"_blank\" rel=\"noopener\">Verify Your Report<\/a> page and confirm that the online record matches the paper report.<\/li><li><strong>\u6765\u6e90\uff1a<\/strong> \u62a5\u544a\u5e94\u6807\u660e\u8be5\u94bb\u77f3\u4e3a\u5b9e\u9a8c\u5ba4\u57f9\u80b2\u3002<\/li><li><strong>\u5c3a\u5bf8\u4e0e\u91cd\u91cf\uff1a<\/strong> \u5bf9\u7167\u5b9d\u77f3\u9875\u4e0e\u8ba2\u5355\u786e\u8ba4\u4e2d\u7684\u5c3a\u5bf8\u4e0e\u514b\u62c9\u3002<\/li><li><strong>\u5f62\u72b6\u4e0e\u5207\u5de5\u98ce\u683c\uff1a<\/strong> \u6838\u5bf9\u62a5\u544a\u4e0a\u7684\u300cShape and Cutting Style\u300d\u4e00\u884c\u662f\u5426\u4e0e\u60a8\u8ba2\u8d2d\u7684\u5185\u5bb9\u76f8\u7b26\u3002<\/li><li><strong>\u59a5\u5584\u4fdd\u5b58\uff1a<\/strong> \u4e0e\u8ba2\u5355\u90ae\u4ef6\u4e00\u8d77\u5b58\u4e00\u4efd\u7535\u5b50\u526f\u672c\u3002\u4fdd\u9669\u516c\u53f8\u6216\u65e5\u540e\u4f30\u4ef7\u5e08\u53ef\u80fd\u9700\u8981\u67e5\u770b\u3002<\/li><\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u82e5\u6709\u4efb\u4f55\u4e0d\u7b26\uff0c\u8bf7\u5728\u4f69\u6234\u6216\u9576\u5d4c\u524d\u8054\u7cfb Oecler\uff1ainfo@oecler.com\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5982\u4f55\u5411 Oecler \u7533\u8bf7\u62a5\u544a<\/h2>\n\n\n\n<ol class=\"wp-block-list\"><li>\u5728 oecler.com \u9009\u62e9\u60a8\u7684\u88f8\u77f3\u6216\u4f5c\u54c1\u3002<\/li><li>\u4e0b\u5355\u524d\u6216\u4e0b\u5355\u65f6\uff0c\u8bf7\u53d1\u90ae\u4ef6\u81f3 info@oecler.com\uff0c\u6216\u901a\u8fc7 WhatsApp \u8054\u7cfb Oecler\uff0c\u8bf4\u660e\u60a8\u9700\u8981\u54ea\u4e00\u7c7b\u62a5\u544a\u3002<\/li><li>Oecler \u4f1a\u786e\u8ba4\u989d\u5916\u65f6\u95f4\uff0c\u4ee5\u53ca IGI \u7684 $50 \u8d39\u7528\u3002<\/li><\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">\u5e38\u89c1\u95ee\u9898<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1792727500177\"><strong class=\"schema-faq-question\">Oecler \u7684\u57f9\u80b2\u94bb\u77f3\u9644\u5e26\u8bc1\u4e66\u5417\uff1f<\/strong><p class=\"schema-faq-answer\">Oecler \u7684\u57f9\u80b2\u94bb\u77f3\u9ed8\u8ba4\u4e0d\u9644\u8bc1\u4e66\u3002\u88f8\u77f3\u57f9\u80b2\u94bb\u77f3\u53ef\u6309\u9700\u7533\u8bf7 IGI \u62a5\u544a\uff08\u7ea6\u53e6\u52a0 20 \u5929\uff0c$50\uff09\uff1b\u6210\u54c1\u9996\u9970\u53ef\u7533\u8bf7 NGTC\uff08\u7ea6 3 \u5929\uff0c\u514d\u8d39\uff09\u3002<\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-1792727500178\"><strong class=\"schema-faq-question\">\u5728 Oecler\uff0cIGI\u3001NGTC \u4e0e AGL \u6709\u4f55\u4e0d\u540c\uff1f<\/strong><p class=\"schema-faq-answer\">Oecler \u5bf9\u4e0d\u540c\u54c1\u7c7b\u4f7f\u7528\u4e0d\u540c\u5b9e\u9a8c\u5ba4\uff1a\u6210\u54c1\u9996\u9970\u7528 NGTC\uff0c\u88f8\u77f3\u57f9\u80b2\u94bb\u77f3\u7528 IGI\uff0c\u88f8\u77f3\u57f9\u80b2\u5f69\u8272\u5b9d\u77f3\u7528 AGL\u3002<\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-1792727500179\"><strong class=\"schema-faq-question\">\u5728 Oecler\uff0cIGI \u62a5\u544a\u8d39\u7528\u662f\u591a\u5c11\uff1f<\/strong><p class=\"schema-faq-answer\">Oecler \u5bf9\u88f8\u77f3\u57f9\u80b2\u94bb\u77f3\u7684 IGI \u62a5\u544a\u6536\u53d6 $50\uff0c\u5e76\u5728\u6b63\u5e38\u5236\u4f5c\u65f6\u95f4\u4e0a\u53e6\u52a0\u7ea6 20 \u5929\u3002<\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-1792727500180\"><strong class=\"schema-faq-question\">\u5728 Oecler\uff0cNGTC \u4e0e AGL \u62a5\u544a\u514d\u8d39\u5417\uff1f<\/strong><p class=\"schema-faq-answer\">Oecler \u4e3a\u6210\u54c1\u9996\u9970\u63d0\u4f9b NGTC \u62a5\u544a\u3001\u4e3a\u88f8\u77f3\u57f9\u80b2\u5f69\u8272\u5b9d\u77f3\u63d0\u4f9b AGL \u62a5\u544a\uff0c\u5747\u4e3a\u514d\u8d39\uff0c\u5404\u7ea6 3 \u5929\u3002<\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-1792727500181\"><strong class=\"schema-faq-question\">\u6210\u54c1\u6212\u6307\u53ef\u4ee5\u7533\u8bf7 IGI \u62a5\u544a\u5417\uff1f<\/strong><p class=\"schema-faq-answer\">Oecler \u4e3a\u6210\u54c1\u9996\u9970\u63d0\u4f9b NGTC \u62a5\u544a\uff0c\u4e3a\u88f8\u77f3\u57f9\u80b2\u94bb\u77f3\u63d0\u4f9b IGI \u62a5\u544a\u3002\u6212\u6307\u7684 NGTC \u4e0e\u88f8\u77f3\u7684 IGI \u7528\u9014\u4e0d\u540c\u3002<\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-1792727500182\"><strong class=\"schema-faq-question\">\u7533\u8bf7\u62a5\u544a\u4f1a\u6539\u53d8\u9000\u8d27\u653f\u7b56\u5417\uff1f<\/strong><p class=\"schema-faq-answer\">\u65e0\u8bba\u662f\u5426\u6709\u62a5\u544a\uff0cOecler \u7684\u9000\u8d27\u653f\u7b56\u76f8\u540c\u3002\u88f8\u77f3\u4e0e\u5b9a\u5236\u4f5c\u54c1\u4e3a\u6700\u7ec8\u552e\u51fa\u3001\u4e0d\u53ef\u9000\u3002<\/p><\/div><div class=\"schema-faq-section\" id=\"faq-question-1792727500183\"><strong class=\"schema-faq-question\">\u5982\u4f55\u67e5\u9a8c IGI \u62a5\u544a\uff1f<\/strong><p class=\"schema-faq-answer\">Oecler \u987e\u5ba2\u53ef\u51ed\u62a5\u544a\u7f16\u53f7\u5728 IGI \u7684 <a href=\"https:\/\/www.igi.org\/Verify-Your-Report\/\" target=\"_blank\" rel=\"noopener\">Verify Your Report<\/a> page. Enter the report number from your loose lab-grown diamond&#8217;s IGI report there.<\/p><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u6765\u6e90\uff1a<\/strong> IGI, <a href=\"https:\/\/www.igi.org\/reports\/\" target=\"_blank\" rel=\"noopener\">Reports<\/a>; IGI, <a href=\"https:\/\/www.igi.org\/reports\/lab-grown-diamond-report\/\" target=\"_blank\" rel=\"noopener\">\u57f9\u80b2\u94bb\u77f3\u62a5\u544a<\/a>; IGI, <a href=\"https:\/\/www.igi.org\/Verify-Your-Report\/\" target=\"_blank\" rel=\"noopener\">Verify Your Report<\/a>; GIA 4Cs, <a href=\"https:\/\/4cs.gia.edu\/interactive-4cs\/more-diamond-info\/synthetics.html\" target=\"_blank\" rel=\"noopener\">Laboratory-grown diamonds<\/a>; GIA, <a href=\"https:\/\/www.gia.edu\/hpht-and-cvd-diamond-growth-processes\" target=\"_blank\" rel=\"noopener\">HPHT and CVD growth processes<\/a>; FTC, <a href=\"https:\/\/www.ftc.gov\/business-guidance\/resources\/loupe-advertising-diamond-gemstones-pearls\" target=\"_blank\" rel=\"noopener\">Advertising diamonds, gemstones and pearls<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Oecler \u662f Marie \u521b\u7acb\u7684\u76f4\u9762\u6d88\u8d39\u8005\u7684\u9ad8\u7ea7\u73e0\u5b9d\u54c1\u724c\uff0c\u63d0\u4f9b\u590d\u53e4\u7075\u611f\u7684\u57f9\u80b2\u94bb\u77f3\u4e0e\u57f9\u80b2\u5f69\u8272\u5b9d\u77f3\u9996\u9970\uff0c\u9576\u4e8e\u8db3\u91d1\u6216\u94c2\u91d1\u3002 <a href=\"https:\/\/oecler.com\/zh\/\">oecler.com<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u76f8\u5173\uff1a <a href=\"https:\/\/oecler.com\/zh\/product-category\/loose-stones\/\">loose stones<\/a>, <a href=\"https:\/\/oecler.com\/zh\/faqs\/\">\u5e38\u89c1\u95ee\u9898<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Oecler does not include a certificate by default. On request, finished jewelry gets an NGTC report (about 3 days, free), loose lab-grown diamonds get an IGI report (about 20 extra days on top of normal production time, $50), and loose lab-grown colored gemstones get an AGL report (about 3 days, free). This guide explains what [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2111,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[70],"tags":[],"class_list":["post-2103","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guides"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":8}},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Lab-Grown Diamond Certificates: IGI vs NGTC vs AGL | Oecler<\/title>\n<meta name=\"description\" content=\"Oecler includes no certificate by default. On request: NGTC for jewelry, IGI for loose lab-grown diamonds, AGL for loose lab-grown gems. Costs and timing.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/oecler.com\/zh\/lab-grown-diamond-certificate-igi-ngtc-agl\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Lab-Grown Diamond Certificates: IGI vs NGTC vs AGL | Oecler\" \/>\n<meta property=\"og:description\" content=\"Oecler includes no certificate by default. On request: NGTC for jewelry, IGI for loose lab-grown diamonds, AGL for loose lab-grown gems. Costs and timing.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/oecler.com\/zh\/lab-grown-diamond-certificate-igi-ngtc-agl\/\" \/>\n<meta property=\"og:site_name\" content=\"Oecler\" \/>\n<meta property=\"article:published_time\" content=\"2026-10-23T04:32:53+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/oecler.com\/wp-content\/uploads\/2026\/10\/blog-title-bg-3-workbench-rough-1200x675-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"mavejewellery2\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"mavejewellery2\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"7 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/oecler.com\\\/lab-grown-diamond-certificate-igi-ngtc-agl\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/oecler.com\\\/lab-grown-diamond-certificate-igi-ngtc-agl\\\/\"},\"author\":{\"name\":\"mavejewellery2\",\"@id\":\"https:\\\/\\\/oecler.com\\\/#\\\/schema\\\/person\\\/fa85db83fadf205d25c9684e7113f858\"},\"headline\":\"Do Lab-Grown Diamonds Come With Certificates? 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A loose lab-grown diamond can get an IGI report on request for $50, which adds about 20 days on top of normal production time.\",\"inLanguage\":\"zh-Hans\"},\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/oecler.com\\\/lab-grown-diamond-certificate-igi-ngtc-agl\\\/#faq-question-1792727500178\",\"position\":2,\"url\":\"https:\\\/\\\/oecler.com\\\/lab-grown-diamond-certificate-igi-ngtc-agl\\\/#faq-question-1792727500178\",\"name\":\"What is the difference between IGI, NGTC and AGL at Oecler?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Oecler uses each lab for a different item: NGTC for finished jewelry, IGI for loose lab-grown diamonds, and AGL for loose lab-grown colored gemstones. NGTC and AGL reports take about 3 days and are free; an IGI report adds about 20 days on top of normal production time and costs $50.\",\"inLanguage\":\"zh-Hans\"},\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/oecler.com\\\/lab-grown-diamond-certificate-igi-ngtc-agl\\\/#faq-question-1792727500179\",\"position\":3,\"url\":\"https:\\\/\\\/oecler.com\\\/lab-grown-diamond-certificate-igi-ngtc-agl\\\/#faq-question-1792727500179\",\"name\":\"How much does an IGI report cost at Oecler?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Oecler charges $50 for an IGI report on a loose lab-grown diamond, and the report adds about 20 days on top of normal production time before the stone ships.\",\"inLanguage\":\"zh-Hans\"},\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/oecler.com\\\/lab-grown-diamond-certificate-igi-ngtc-agl\\\/#faq-question-1792727500180\",\"position\":4,\"url\":\"https:\\\/\\\/oecler.com\\\/lab-grown-diamond-certificate-igi-ngtc-agl\\\/#faq-question-1792727500180\",\"name\":\"Are NGTC and AGL reports free at Oecler?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Oecler provides NGTC reports for finished jewelry and AGL reports for loose lab-grown colored gemstones free of charge on request. Each takes about 3 days.\",\"inLanguage\":\"zh-Hans\"},\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/oecler.com\\\/lab-grown-diamond-certificate-igi-ngtc-agl\\\/#faq-question-1792727500181\",\"position\":5,\"url\":\"https:\\\/\\\/oecler.com\\\/lab-grown-diamond-certificate-igi-ngtc-agl\\\/#faq-question-1792727500181\",\"name\":\"Can I get an IGI report for a finished ring?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Oecler provides NGTC reports for finished jewelry, and IGI reports for loose lab-grown diamonds. A ring's center stone can get its own IGI report before it is set, so if you want IGI documentation for the center stone, ask when you order. The IGI report adds about 20 days on top of normal production time.\",\"inLanguage\":\"zh-Hans\"},\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/oecler.com\\\/lab-grown-diamond-certificate-igi-ngtc-agl\\\/#faq-question-1792727500182\",\"position\":6,\"url\":\"https:\\\/\\\/oecler.com\\\/lab-grown-diamond-certificate-igi-ngtc-agl\\\/#faq-question-1792727500182\",\"name\":\"Does requesting a report change the return policy?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Oecler's return policy is the same with or without a report. Loose stones and custom pieces are final sale, and ready-to-ship jewelry can be returned within 7 days of shipment, with the customer paying return shipping and no exchanges.\",\"inLanguage\":\"zh-Hans\"},\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/oecler.com\\\/lab-grown-diamond-certificate-igi-ngtc-agl\\\/#faq-question-1792727500183\",\"position\":7,\"url\":\"https:\\\/\\\/oecler.com\\\/lab-grown-diamond-certificate-igi-ngtc-agl\\\/#faq-question-1792727500183\",\"name\":\"How can I check an IGI report?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Oecler customers can check an IGI report by its number on IGI's Verify Your Report page. 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A loose lab-grown diamond can get an IGI report on request for $50, which adds about 20 days on top of normal production time.","inLanguage":"zh-Hans"},"inLanguage":"zh-Hans"},{"@type":"Question","@id":"https:\/\/oecler.com\/lab-grown-diamond-certificate-igi-ngtc-agl\/#faq-question-1792727500178","position":2,"url":"https:\/\/oecler.com\/lab-grown-diamond-certificate-igi-ngtc-agl\/#faq-question-1792727500178","name":"\u5728 Oecler\uff0cIGI\u3001NGTC \u4e0e AGL \u6709\u4f55\u4e0d\u540c\uff1f","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Oecler uses each lab for a different item: NGTC for finished jewelry, IGI for loose lab-grown diamonds, and AGL for loose lab-grown colored gemstones. NGTC and AGL reports take about 3 days and are free; an IGI report adds about 20 days on top of normal production time and costs $50.","inLanguage":"zh-Hans"},"inLanguage":"zh-Hans"},{"@type":"Question","@id":"https:\/\/oecler.com\/lab-grown-diamond-certificate-igi-ngtc-agl\/#faq-question-1792727500179","position":3,"url":"https:\/\/oecler.com\/lab-grown-diamond-certificate-igi-ngtc-agl\/#faq-question-1792727500179","name":"\u5728 Oecler\uff0cIGI \u62a5\u544a\u8d39\u7528\u662f\u591a\u5c11\uff1f","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Oecler charges $50 for an IGI report on a loose lab-grown diamond, and the report adds about 20 days on top of normal production time before the stone ships.","inLanguage":"zh-Hans"},"inLanguage":"zh-Hans"},{"@type":"Question","@id":"https:\/\/oecler.com\/lab-grown-diamond-certificate-igi-ngtc-agl\/#faq-question-1792727500180","position":4,"url":"https:\/\/oecler.com\/lab-grown-diamond-certificate-igi-ngtc-agl\/#faq-question-1792727500180","name":"\u5728 Oecler\uff0cNGTC \u4e0e AGL \u62a5\u544a\u514d\u8d39\u5417\uff1f","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Oecler provides NGTC reports for finished jewelry and AGL reports for loose lab-grown colored gemstones free of charge on request. Each takes about 3 days.","inLanguage":"zh-Hans"},"inLanguage":"zh-Hans"},{"@type":"Question","@id":"https:\/\/oecler.com\/lab-grown-diamond-certificate-igi-ngtc-agl\/#faq-question-1792727500181","position":5,"url":"https:\/\/oecler.com\/lab-grown-diamond-certificate-igi-ngtc-agl\/#faq-question-1792727500181","name":"\u6210\u54c1\u6212\u6307\u53ef\u4ee5\u7533\u8bf7 IGI \u62a5\u544a\u5417\uff1f","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Oecler provides NGTC reports for finished jewelry, and IGI reports for loose lab-grown diamonds. A ring's center stone can get its own IGI report before it is set, so if you want IGI documentation for the center stone, ask when you order. The IGI report adds about 20 days on top of normal production time.","inLanguage":"zh-Hans"},"inLanguage":"zh-Hans"},{"@type":"Question","@id":"https:\/\/oecler.com\/lab-grown-diamond-certificate-igi-ngtc-agl\/#faq-question-1792727500182","position":6,"url":"https:\/\/oecler.com\/lab-grown-diamond-certificate-igi-ngtc-agl\/#faq-question-1792727500182","name":"\u7533\u8bf7\u62a5\u544a\u4f1a\u6539\u53d8\u9000\u8d27\u653f\u7b56\u5417\uff1f","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Oecler's return policy is the same with or without a report. 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