An insider’s view of the stunning world of inclusions.

A tourmaline displaying different colors of chatoyancy on opposite sides of a double cabochon is examined.

A pink sapphire bead with drill holes revealing ruby fragments is examined.

Inclusions create chatoyancy in a colorless phenakite cabochon.

A musgravite specimen’s inclusions result in an optical phenomenon unusual for the material.

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

A cracked apatite specimen reveals hidden treasure.

This large marble-hosted occurrence in the Pamir Mountains is a potentially productive source of corundum, including ruby with a bright red color reminiscent of “pigeon’s blood” Burmese rubies.

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

Examines a form of asterism comprising two six-rayed stars, one white and one that exhibits the stone’s bodycolor. Firsthand accounts and a survey of patent documents reveal that diffusion has been used to create or enhance this optical phenomenon in synthetic and possibly natural corundum since the 1950s.

G&G’s new column takes a closer look at the hidden wonders found in gemstones.

Review of I Love Those Earrings: A Popular History from Ancient to Modern, by Jane Merrill with Chris Filstrup.

《纽约州矿物收藏指南》书评。

Review of Collector’s Guide to the Zeolite Group, by Robert J. Lauf.

评论 S.K. Samuels（S.K. 塞缪尔）的 Imperial Jade of Burma and Mutton-Fat Jade of India: Mining, Trade, and Use from Antiquity to the Present（《缅甸帝王玉和印度羊脂玉：从古至今的开采、贸易及使用》）。

评论 S.K. Samuels（S.K. 塞缪尔）的 Imperial Jade of Burma and Mutton-Fat Jade of India: Mining, Trade, and Use from Antiquity to the Present（《缅甸帝王玉和印度羊脂玉：从古至今的开采、贸易及使用》）。

3D 打印的潜能对珠宝设计和制造而言十分惊人，时间、精度和成本效益得到高度重视。

美しい宝石の採掘やカットが行われている、パキスタンの鉱山での本物の宝石採掘を、GIAフィールド宝石学者と共に冒険してください。 ヒマラヤ、カラコルム、ヒンドゥークシュ山脈がぶつかり合う、マルコ・ポーロの通った古いシルクロードの旅に、私たちと共に出かけます。

一个代表了不同地理区域、市场和公司规模的研讨专家组对他们如何处理责任采购问题展开了讨论。

采用内含物分析、紫外线 — 可见光 — 近红外分光光度法、​能​量​色​散 ​X ​射​线​荧​光​光​谱​仪​和激光剥蚀电感耦合等离子体质谱仪，对刚玉附生合成红宝石进行分析。