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Emerald Origins: History and Identification

Emeralds from different sources can vary in quality. Learn how to identify emerald origins by analyzing the optical and physical properties of…

Is Growing Diamonds a Sustainable Alternative to Diamond Mining?

Lab-grown diamonds are marketed as a sustainable alternative to mined diamonds. But how do both types compare in terms of environmental impact? Let’s…

HPHT Diamond Treatments

Step 2: Advanced Gemology Lesson 8 Back to syllabus In 1999, General Electric (GE) introduced a new diamond treatment into the jewelry trade. The…

Identifying Synthetic Diamonds

Step 5: Advanced Gem Information Lesson 2 Back to syllabus Synthetic diamonds aren’t new. General Electric (GE) has been making them since…

Lab-Created Diamonds: the Ultimate Guide

Lab-created diamonds have an undeserved stigma. However, they make excellent, lower cost alternatives to natural, mined diamonds. In this article,…

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Emerald Origins: History and Identification

Is Growing Diamonds a Sustainable Alternative to Diamond Mining?

HPHT Diamond Treatments

Identifying Synthetic Diamonds

Lab-Created Diamonds: the Ultimate Guide

An Introduction to Gemstone Inclusions

What Does the GIA Colored Gem Grading Code Mean?

Identifying Inclusions of Specific Gems

Gem Price Guide