What is tsavorite garnet?

Tsavorite is the green variety of grossular garnet, colored by vanadium and chromium, first found in 1967 near the Tsavo National Park on the Kenya-Tanzania border. Tsavorite is the variety; the species is grossular garnet, and a laboratory report prints both. GIA gives garnet a Mohs hardness of 7 to 7.5 and describes its toughness as "fair to good"; Mohs is scratch hardness only and says nothing about chipping.

Is tsavorite treated?

The AGTA Gemstone Information Manual assigns tsavorite the enhancement code N, defined as "Natural: No modification (or currently has no known modification process)." On that basis, and on our own examination, we assess a tsavorite as untreated unless its listing says otherwise; that is our assessment, not a laboratory finding. Clarity enhancement is used on a minority of stones, and this collection includes one stone labelled clarity-enhanced.

绿色钙铝榴石（沙弗莱）裸石

沙弗莱石是什么

沙弗莱石是绿色的钙铝榴石，属于石榴石，而不是蓝宝石或祖母绿。它的绿色来自微量的铬和钒，色调深浅因石而异，因此每颗宝石都以实物照片和视频呈现。检测报告会同时列出品种名和矿物种名。偏好蓝宝石的绿色系买家，可比较绿色蓝宝石，或浏览全部宝石。

每件商品页面列明的内容

本系列每颗宝石单独上架，附有该宝石本身的照片和视频，以及检测报告所载的重量、尺寸、形状、切工和颜色等资料。每件商品页面说明该宝石的处理情况；若检测报告载有相关项目，我们按报告原文照录。价值较高的宝石附有美国宝石研究院（GIA）报告，商品页面列出报告编号；由其他实验室出具的报告，页面会注明实验室名称。

产地与采购

Crescent Gems 的采购和切磨工作以斯里兰卡为基地。每颗沙弗莱石的产地以商品页面为准；如检测报告未载产地意见，页面所列产地是我们自己的采购记录，并非实验室结论。

查询与订购

如需更多照片，或希望我们为某颗宝石拍摄视频，请发电邮至 crescentgems@gmail.com，我们以中文回复。宝石从美国经 FedEx 或 UPS 寄出并全额保险：每笔订单 US$499 及以下运费 US$60，超过 US$499 免运费；提供 14 天退款保证（美国境外的退货运费由买家承担）。