尽管买家的鉴识能力越来越强，但在 2017 年的拍卖中，买家们仍然购买了价值 11 亿美元的特别高端钻石、彩色宝石和珠宝。

The rigors and often-harrowing conditions of gemology field expeditions are no match for 30-year Marine veteran with a love of gems.

Discusses the mineralogical composition and provenance of this spotted decorative gemstone.

Examines 85 saltwater natural pearls, reportedly harvested from the Caribbean islands off the coast of Venezuela during the early 16th century, to determine their age.

Surface-reaching growth tubes in a sapphire provide insight into the gem’s origin and treatment history.

A growth blockage/fluid inclusion combination in a blue sapphire from Sri Lanka resembles a bloom in a rainstorm.

Compares PL spectroscopy data of 48 emerald samples from three countries to evaluate the usefulness of the technique in geographic origin determination.

Summarizes statistical data and distinctive features of several thousand gem-quality HPHT synthetic diamonds examined by GIA from 2007 through 2016.

A firsthand look at Colombia’s emerald mines and the cutting and trading industry in Bogotá.

Current activity and production at various sites around Mozambique are reported.

Details the process used by Wiede’s Carbidwerk to produce star synthetic corundum from the mid-1950s through the 1970s.

A fluorite specimen hosts two eye-visible, prominent white barite inclusions.

A quartz cabochon hosts an unusual rose-shaped hematite inclusion.

Garnets with a unique color and a previously unreported chemical composition are examined at GIA’s Carlsbad lab.

Review of Taffin: The Jewelry of James de Givenchy, by James Taffin de Givenchy, Tobias Meyere, and Hamilton South.

Alumni across the globe participate in chapter events and are out in full force to support the trade. There are a variety of ways you can join them.

一对校友夫妇受到母亲的启发，联手打造了一件美丽的珠宝，共同谱写出璀璨的人生。