How GIA Identifies Colored Stones
GIA 接收的待鉴别物品种类繁多、错综复杂；从各种有色宝石、珍珠、非比寻常的雕刻品和珠宝，到最新的合成品和仿品以及经过加工的宝石，应有尽有。
Investigation into Invalidated Reports Continues: GIA Offers No-Cost Confirmation Service
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Kathryn Kimmel
The first woman on the executive team and head of GIA’s innovative marketing and public relations efforts for nearly 30 years.
Disclosing Treated or Laboratory-Grown Gem Material to GIA
向 GIA 提交物品进行分析和分级时，您须对经过处理的或实验室制造的宝石材料进行披露。