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Gemology

Science, tools, identification, treatment, valuation & grading of gems.

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How to Start a Gem Collection

How to Start a Gem Collection

Although many gem enthusiasts want to become collectors, they may not know where to begin. Read this article for tips...
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An Introduction to Gemology

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Gem Formation: How are Gemstones Created?

Gem Formation: How are Gemstones Created?

Gem formation usually involves mineral crystallization and other geological processes. Learn how these affect the gemstone properties gemologists study.
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An Introduction to Gemstone Inclusions

An Introduction to Gemstone Inclusions

Gemstone inclusions are materials trapped inside gems as they form. Learn how gemologists use inclusions to help identify gemstones and...
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Gemstone Hardness and Wearability

Gemstone Hardness and Wearability

Diamond is the hardest natural material in the world. However, it’s also brittle. Scientifically speaking, gemstone hardness measures the ability...
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Gemology Tools

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Recommended Gemology Tools and Instruments

Recommended Gemology Tools and Instruments

Gemstone identification requires a good reference library and some basic gemology tools. Before you go shopping, learn more about what...
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Build Your Own Gemology Tools

Build Your Own Gemology Tools

Are you a hobbyist or professional gemologist facing high equipment costs? Read our IGS series of articles that can help...
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10X Loupe for Gemologists and Jewelers

10X Loupe for Gemologists and Jewelers

The 10X loupe is the gemologist's best friend. Learn how to examine gemstones for fractures, inclusions, color, and much more...
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Physical and Optical Properties of Gemstones

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Gemstone Optics: The Basics

Gemstone Optics: The Basics

Accurately measuring optical properties is critical for identifying gemstones. This article covers the basic terminology and concepts of gemstone optics....
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What is Gemstone Cleavage?

What is Gemstone Cleavage?

Gemstone cleavage is a break in a crystal along internal planes. Learn the science behind this and the difference between...
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Gemstone Color Measurements and Specifications

Gemstone Color Measurements and Specifications

Gemstone color measurements are hard to make with conventional color-order systems. Learn how recent colorimetry tech advances have improved accuracy....
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