Search a city or postal code to find retailers who carry GIA-graded diamonds or have GIA-trained staff. Results will include addresses, store hours and directions. Store hours reflected on Retailer ...
Akoya pearls are the small white pearls that most people picture when they think of pearls. They are saltwater pearls, and are usually round and white or cream, with a pink overtone and high luster.
Birthstones are a fun, popular and colorful introduction to the world of gemstones. They appeal to audiences around the world regardless of gender, age, nationality or religion. Birthstones carry ...
Those born in January are lucky to have the beautiful and diverse garnet as their birthstone. Garnets are commonly red but also come in an extraordinary range of beautiful colors, including orange, ...
Students explore more than 60 species of common and collector gemstones found in the marketplace. Subjects covered include the GIA Colored Stone Grading System, gemstone formation, composition, ...
Diamond color is all about what you can’t see. Diamonds are valued by how closely they approach colorlessness – the less color, the higher their value. (The exception to this is fancy color diamonds, ...
The delicate interlinked cross-like cloud pattern found in this 0.62 ct diamond has never been encountered in GIA’s laboratories. Photomicrograph by Nathan Renfro; field of view 2.40 mm. GIA’s ...
GIA（米国宝石学会）の研究とレポートはカラーストーン分析においてベンチマークとされています。 GIA ダイヤモンド オリジン レポート: 科学に基づくトレーサビリティ 消費者は、これまで ...
单词琥珀色表示棕黄色，但琥珀（宝石）可为黄色、金色、白色、橙色至红褐色，甚至偏蓝或偏绿。 波罗的海琥珀一般比多明尼加的琥珀更加昂贵。 含有昆虫或植物内含物的琥珀价格比清澈无 ...
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