
Dona Dirlam氏
A childhood love of gems and minerals led to the transformation of GIA's library and to a lasting reputation of excellence.

Exhibition Review: *Gemstone Carvings: The Masterworks of Harold Van Pelt*
A review of Gemstone Carvings: The Masterworks of Harold Van Pelt at the Bowers Museum in Santa Ana, California.
Winter 2014 G&G Publication Info
This document provides the publication information for Gems & Gemology

サファイアの品質を決定する要因
サファイアは、ルビーとエメラルドと並ぶ三大カラーストーンの一つです。耐久性に優れたこの宝石は、その実用性とロマンチックな雰囲気で、ジュエリー購入者を魅了し続けています。こちらをクリックして、サファイアがこれほどまでに人気を集める理由をご覧ください!




Fall 2022 G&G Publication Information
This document provides the publication information for Gems & Gemology
Summer 2022 G&G Publication Information
This document provides the publication information for Gems & Gemology
Summer 2023 G&G Publication Information
This document provides the publication information for Gems & Gemology
Summer 2024 G&G Publication Information
This document provides the publication information for Gems & Gemology
An Introduction to Spectroscopy in Gem Testing
Fall 2023 G&G Publication Information
This document provides the publication information for Gems & Gemology
Summer 2025 G&G Publication Information
This document provides the publication information for Gems & Gemology
Winter 2025 G&G Publication Information
This document provides the publication information for Gems & Gemology


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