我们只鉴定裸钻，因为镶托或镶嵌架可以掩盖或影响颜色和净度等级，使之很难确定确切的克拉重量。为裸钻分级时，GIA 可以检测钻石用到的任何处理方式，而不损坏宝石或镶托。

The three items stolen were a 10.10 pink diamond main loose GIA valued at $240,000; a 14K-W/G 20.20 karat diamond stud earrings valued at $378,000; and a platinum 5.06 karat fancy light pink ...

James E. Shigley（詹姆斯·E.希格利）博士是卡尔斯巴德 GIA 的一位特聘研究员。 Pink CVD lab-grown products can be separated from natural and treated-color natural pink diamonds by a combination of gemological and spectroscopic ...

If a diamond ring's setting is crooked, loose, or poorly crafted, the stone may be less valuable than advertised. If the craftsman was willing to cut corners on the materials or construction ...

"Something About The Way You Look Tonight / Candle in the Wind" by Elton John "Something About the Way You Look Tonight / Candle in the Wind" became the first-ever song to be certified diamond on ...

Costco Wholesale Corp. engages in the operation of membership warehouses through wholly owned subsidiaries. It operates through the following geographical segments: United States, Canada ...

The Recording Industry Association of America has officially certified Kid Cudi‘s “Day ‘N’ Nite” as diamond as the 2008 hit sells 10 million units in the United States. This feat gives ...

13) because his 2008 breakout debut hit “Day ‘N’ Nite” is now a diamond-certified record by the Recording Industry Association of America. The diamond certification is given to artists ...