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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: Synthetic Diamonds

James E. Shigley

Gems & Gemology in Review: Colored Diamonds

John M. King

Gemology

Megan Kaminski

The Sisk Gemology Reference Volume 3 / Gallery of gems

Jerry Sisk

The Sisk Gemology Reference Volume 2 / Noteworthy gems

Jerry Sisk

Gems & Gemology in Review: Treated Diamonds

James E. Shigley

Popular Gemology

Richard M. Pearl

Gemology For Beginners

Dustin Kaban

Dictionary of Gems and Gemology

Robert M. Shipley

Contributions to Gemology No.1

Adolf Peretti

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

JUSCEMAR MANOEL DE BRITO

Photoatlas of Gemstone Spectra For Gemology Students

Richard D. Armstrong

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