Research using diamond presses gives insight to planetary formation

A profile of three women who changed the course of GIA history.

中国人デザイナーの Kaka Zhangが、彼女のジェダイトの宝飾品に秘められた芸術的なインスピレーションと事業戦略を打ち明けます。

Diamond inclusion research yields age and insight into earth history

Review of

Reports on the microscopic, chemical, and spectroscopic features that differentiate the high-quality Baw Mar sapphire from “classic” gem-quality Burmese sapphire.

Examines the last two decades’ advances in analyzing and understanding the formation of natural diamonds, and their relation to the earth’s formation.

In piecing together this treasure trove of signature Italian style, the book brings readers closer to understanding the appeal and artistry of jewelry making beyond that which is traditionally associated with fine jewelry.

Explores the emergence of the Luc Yen area as a producer of corundum, spinel, tourmaline, and other colored stones.

In these two extremely rare specimens, demantoid garnet replaced coral and gastropod fossils.

Zircon clusters and other inclusions help to create an unusual vivid purple-pink morganite specimen.

The centerpiece of this brooch is a 98.67 ct Melo pearl, believed to be one of the world's largest.

This 9.12 gram amber composite featured a combination of natural and imitation amber, accompanied by natural and artificial insect inclusions.

南アフリカのカリナン鉱山は、世界でこれまで知られる中で最大の宝の山とも呼べ、初めてダイヤモンドが発見されてから111年後も、依然として主要な宝石を産出しています。

中国最大といわれる宝石小売業者の舞台裏。

Review of

GIA初の正式な国際宝飾品コレクションは、ブラジルの宝飾品の精神と魂を取り上げています。