Diamant,HRD),1973年在比利時安特衛普成立,與國際鑽石委員會共同起草「國際鑽石分級標準」(IDC標準)。 美國寶石協會(英语:American Gem Society)(American Gem Society ,AGS),成立於1934年,其認證標準略高於GIA,歐美寶石業內所謂的完美切工是指AGS的0級標準,而G ...
2. Detectability – Bleaching as a one-step process is virtually impossible to detect in most cases. The second step, impregnation with polymer compounds, is easier to detect by a qualified gemological ...
Reviews the advancements and major trends in laboratory-grown diamonds observed by GIA since 2007. Gemological and Trace Element Characteristics of Cassiterite from Yunling, China Examines gem-quality ...
When purchasing luxury diamonds, it's crucial to look for certification from reputable gemological laboratories, such as the GIA or the American Gem Society (AGS). These certifications provide ...
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If you’re thinking about selling your old diamonds or diamond jewelry for cash, there are three steps you should take before ...
The American Chemical Society (ACS) is committed to the health and safety of both humans ... However, significant environmental regulatory burdens are placed on academic, commercial, and government ...
Abbott Laboratories (ABT) stock has had negative returns for the last 3 years. But don’t get fooled by that when analyzing ...
New Delhi [India], October 23: BD, global leader in diagnostic devices, and the CAP (College of American Pathologists), global leader in medical laboratory EQA (External Quality Assessment) and ...