Buyers at the 2017 JCK Show will likely stick to their open-to-buy plans, but take few chances on new lines or extra stock. Plus: An overview of retail sales, auction headlines.

对钻石的热衷起源于印度，这里的人们从河流和溪流开采钻石。 据一些历史学家估计，早在公元前四世纪，印度就开始交易钻石。

周大福和 GIA 提供安全的数字区块链证书，将钻石的历程和鉴定信息记录在同一个地方。

A 37.41 ct natural rough diamond with distinct pink and colorless zones is examined at GIA’s Botswana laboratory.

360-degree video of the Motswedi diamond.

The quality and size of this 4.04 ct CVD-grown diamond ring demonstrate the advancing technology in laboratory-grown diamonds.

A look at the largest CVD diamond GIA has encountered to date.

GIA’s New York laboratory reports on a 15.10 ct (17.47 × 11.53 × 7.94 mm) Fancy Vivid blue cut-cornered rectangular step cut named the De Beers Cullinan Blue diamond.

GIA’s New York laboratory reports a new record size for CVD laboratory-grown diamond.

编写这份文献清单旨在让您有机会了解更多关于巴西钻石和黑金刚石的历史。

编写这份文献清单旨在让您有机会了解更多关于巴西钻石和黑金刚石的历史。

在钻石贸易中，“光效应”一词广为使用，但实际观察钻石时，“光效应”到底指的是什么？