实验记录
Gemological Institute of America
The trade uses GIA for diamond grading against its own 4Cs scale and for coloured stone and pearl identification reports.
记录
总部Carlsbad, United States
成立1931
身体类型Report issuer
关于原产国的意见发布
状态发布报告
涵盖内容
DiamondColoured stonePearlJadeOrigin determinationTreatment detectionSynthetic detectionEducation
其发布的报告
名称以该实验室在其网站上所标注的名称为准。报告内容及措辞均由该实验室确定，而非由我们确定。
- Diamond Grading Report
- Diamond Origin Report
- Diamond Dossier
- Diamond eReport
- Diamond Focus Report
- Colored Stone Identification Report
- Colored Stone Identification & Origin Report
- Pearl Identification Report
- Pearl Identification & Classification Report
- Cultured Pearl Classification Report
值得了解
GIA is a nonprofit institute that also runs gemmological education and research. Geographic origin is issued only under the Colored Stone Identification and Origin Report, which the site limits to alexandrite, demantoid, emerald, jade, opal, Paraiba tourmaline, peridot, red spinel, ruby and sapphire.
摘自 gia.edu，阅读请访问 2026年8月16日。
我们审核的是经销商，而非宝石。实验室报告仅描述某颗宝石在某一日期的状况；它并非价值的保证，我们也不对此负责。