A guide to capturing gem inclusion scenes using practical equipment and techniques and the appropriate image-refining software.

Inclusions create chatoyancy in a colorless phenakite cabochon.

A hexagonal boundary, usually found in natural material, is observed in a synthetic star sapphire.

A carving identified as blue chalcedony shows evidence of epoxy resin treatment.

The Bangkok lab examines near-colorless HPHT synthetic diamonds in melee sizes.

The New York lab examines three pink CVD synthetic diamonds which have received LPHT annealing treatment.

Review of Geology of Gem Deposits, Second Edition, by L.A. Groat.

Accompany GIA field gemologists on a true gemstone mining adventure to the emerald mines in the Panjshir Valley of Afghanistan, whose rugged inhabitants have held off 10 Soviet invasion attempts. See how emeralds are mined in a mountain source that few have witnessed.

GIAジュエリーデザイン・テクノロジープログラムの最近の卒業生であるMichelle Loonは、自身のジュエリーデザインにより3Dプリントで作成された樹脂の試作品が置かれるビルドプラットフォームを手にする。 写真撮影：Kevin Schumacher

A report summarizing the expeditions and lectures at the June 2015 pegmatite workshop in Poland, Maine.

様々な地理的エリア、市場や企業規模の代表として参加しているパネルリストは、責任ある調達に関する取り組みについて討論します。

Review of Mimi Lipton's Untamed Encounters: Contemporary Jewelry from Extraordinary Gemstones.