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Gemology

Cornelius S. Hurlbut

Guide to Affordable Gemology

W. William Hanneman

Dictionary of Gems and Gemology

Mohsen Manutchehr-Danai

The Sisk Gemology Reference Volume 1 / Prominent gems

Jerry Sisk

Ancient Astrological Gemstones & Talismans: The Complete Science of Planetary Gemology

Richard S. Brown

Patchwork Lab: Gemology: Transforming Fabrics into Facets

Andrea Tsang Jackson

Gems & Gemology in Review: Colored Diamonds

John M. King

Gems & Gemology in Review: Synthetic Diamonds

James E. Shigley

Gemology

Megan Kaminski

The Sisk Gemology Reference Volume 2 / Noteworthy gems

Jerry Sisk

Contributions to Gemology No.1

Adolf Peretti

Gems & Gemology in Review: Treated Diamonds

James E. Shigley

The Sisk Gemology Reference Volume 3 / Gallery of gems

Jerry Sisk

Dictionary of Gems and Gemology

Robert M. Shipley

Gemology For Beginners

Dustin Kaban

Popular Gemology

Richard M. Pearl

Gemology For Beginners : A Guide to Unveiling the Secrets of Gemstone

JUSCEMAR MANOEL DE BRITO

Determinative Gemology - A key to arem's color encyclopedia of gemtones

W. William Hanneman

Arab Roots of Gemology: Ahmad ibn Yusuf Al Tifaschi's Best Thoughts on the Best of Stones

Samir Najm Abul Huda

Photoatlas of Gemstone Spectra For Gemology Students

Richard D. Armstrong