Winter 2019 - Volume 55, Issue 4

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Introduction

The Geographic Origin Dilemma

An overview of the geographic origin complexities facing the gem and jewelry industry today.

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Articles (9)

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THE DR. EDWARD J. GÜBELIN

MOST VALUABLE ARTICLE AWARD

Gemological Characteristics of Sapphires from Yogo Gulch, Montana
Nathan D. Renfro, Aaron C. Palke, and Richard B. Berg

Natural-Color Green Diamonds: A Beautiful Conundrum
Christopher M. Breeding, Sally Eaton-Magaña, and James E. Shigley