
Book Review: Ruby & Sapphire: A Gemologist’s Guide
Review of Ruby & Sapphire: A Gemologist’s Guide

春天的 2017年拍卖更新: 有史以来最昂贵的宝石和其他记录
The spring 2017 auction season saw two important price records fall and solid, if not rising, prices for top gems across the board.



历史读物:阿肯色州钻石

2017 Vegas Outlook: Decent, But Cautious, Buying
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.

历史读物:加州淘金热


历史读物清单:The Diamond Fields of South Africa(《南非钻石矿场》):第 1 部分 (1868-1893)
1867 年初,南非钻石的发现标志着钻石探索历史时期的开始。


Historical Reading List: Pearls from India and Sri Lanka

历史读物:埃及的古老祖母绿矿

历史读物:产自印度的珍珠

历史读物 - 缅甸红宝石矿

美国淡水珍珠的诱惑︰ 重访 Latendresse(拉藤德烈斯)家族
John Latendresse(约翰·拉藤德烈斯)被誉为美国养殖珍珠之父。 他还是一位伟大的天然珍珠收藏家,为其家族留下了可观的天然珍珠藏品。 Latendresse(拉藤德烈斯)家族在美国的珍珠行业备受推崇,长久以来,一直支持着 GIA 的珍珠研究。 请跟我们一起来重访这一家族和他们的珍珠藏品。


Brazilian Diamonds: A Historical and Recent Perspective
Recounts the history, geology, and notable localities of diamond mining in Brazil, and outlines plans for future diamond production.

Causes of Iridescence inNatural Quartz
Describes the occurrence of iridescence, and the role of differential etching, in quartz crystals from India’s Jalgaon District.

Pink Sapphire Filled with Bismuth-Based Glass
A sapphire with a color not commonly seen in the lab is found to have a glass filling.

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