实验记录
GGTL Laboratories
The trade uses GGTL for diamond grading and testing and for gemstone identification including treatment and geographic origin assessment.
记录
成立2011
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 stonePearlOrigin determinationTreatment detection
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。
- Cullinan Diamond Report
- Cullinan Colourless Diamond Report
- Cullinan Coloured Diamond Report
值得了解
GGTL was formed in 2011 by the merger of GemTechLab in Geneva and Gemlab in Liechtenstein, both founded in 1996. It presents its Swiss and Liechtenstein laboratories as co-equal and designates no single headquarters, so no head office country or city is recorded here; addresses are given in Geneva, Eschen and Antwerp. No online report verification tool is offered.
摘自 ggtl-lab.org，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。