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

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

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.

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

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

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

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

Diamond inclusion research yields age and insight into earth history

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。

Behind the scenes at what's widely considered to be China’s largest jewelry retailer.

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。