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Gemological Institute of America
5 年
美国宝石研究院 (GIA) 鉴定证书提供最具权威的钻石分析
GIA 已对一些全球最著名的钻石进行分级,它们包括富有传奇色彩的 Hope Diamond (霍普钻,45.52 克拉),戴比尔斯 Centenary (世纪之星, 273.85 克拉) 和 Taylor-Burton (泰勒波顿之钻, 69.42 克拉)。 GIA 仅对未镶嵌钻石进行鉴定,服务费用视乎钻石重量而定。 支付额外费用之后 ...
Gemological Institute of America
9 年
我如何确定 GIA 鉴定证书的真实性?
为防止遗失或伪造,所有 GIA 证书均包含全息照片、安全界面和缩微相片等安全特征。 此外,GIA 证书检验服务还可以验证证书中的信息是否与我们数据库中的信息相匹配。
来自MSN
1 个月
Gold and diamond appraisals: How and where to get jewelry appraised
GIA itself does not certify or appraise diamonds or jewelry but does offer grading reports. While there are a few apps that claim to offer jewelry appraisals, none exist that offer authentic ...
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