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本文专为那些向素未谋面的经销商汇出真金白银的买家,以及希望向客户通俗易懂地解释这笔交易的经销商而写。此处所有内容均为编辑撰写的文章,均标有日期,且可免费阅读。

文件中应包含哪些内容、信息披露应如何呈现,以及风险究竟出在哪里——逐一详解。
所有指南 →宝石 A–Z按宝石分类的页面:可预期的处理工艺、具有公信力的证书,以及各宝石类别中获准注册的经销商名单。
浏览石头 →起源关于“原产地”对价格的影响以及实验室如何确定原产地的逐笔说明。
GV起源 →拍卖账簿各类有色宝石在拍卖会上的成交价,标题数字旁标注了每克拉单价,其后则标注了该拍卖行的历史最高纪录。
打开账簿 →BirthstonesWho set the birthstone list, when each trade body revised it, and how the Indian navaratna assigns gems by graha instead.
Read the record →术语表有色宝石行业的术语,按实验室和经销商实际使用的方式进行定义。
打开词汇表 →GV实验室哪些机构出具宝石鉴定报告?它们在何处开展业务?以及每份报告将由哪家机构签发?
打开实验室参考资料 →GV 设备宝石加工机、检测仪器以及该行业所使用的软件的制造商
打开设备参考手册 →GV 体验矿山游览、亲手挖掘宝石的矿区、宝石加工课程以及值得专程前往的收藏展
找个地方去逛逛 →交易台已确认的展会日期、展会筹备及核验资源。
展览日程表 →市场指数按宝石种类、产地、处理方式和尺寸划分的每克拉价格范围——正在编制中。
抢先体验 →最新指南
Gemstone certification, explained: what a laboratory report proves and what it never can
A dealer in Bangkok sends three photographs and a PDF, and the PDF is what you are really being asked to trust.
How to read a lab report
The document that arrives with a serious coloured stone is short, and much of it is of no consequence at all.
How insured shipping of loose stones works
A fine loose stone crosses borders in a parcel the size of a paperback, and it does so safely thousands of times a week.
Kashmir and Azad Kashmir sapphires
What is a classic Kashmir sapphire? One deposit, worked for about six years, a hundred and forty years ago.
Emerald oiling grades, explained
Nearly every emerald reaches the market with surface-reaching fissures, and nearly every one has had those fissures filled.
Ruby origin: Burma and Mozambique
Two names anchor the modern ruby market.