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Gemstone heat treatments can increase the beauty and value of many rough pieces. Learn how to conduct the most common procedures safely.

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Learning how to conduct a gemstone examination takes practice. Follow an expert gemologist step-by-step through tests of five unknown samples.

Aquamarine Color and Heat Treatment

There's more to aquamarine color than blue. Most natural stones start blue-green and are heated to blue. Learn the pros and cons of this treatment.

Carats And Gemstone Grading

Carats are the units used to measure gem weight and one of the main factors in gem grading. Learn what affects the value per carat of various gem species.

Buying Gemstones in Afghanistan: A Beginner’s Guide

Considering buying gems in Afghanistan? Learn which Afghan gemstones to seek out, which to avoid, and prepare for a “buyer beware” experience.

Choosing And Applying Doublet Glue For Jewelry

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How To Re-Oil Emeralds Safely And Easily

Oil treatment is a standard industry practice for enhancing emeralds. However, the treatments are not permanent. Learn how to re-oil emeralds safely.

Is A Lab-Created Emerald A Real Emerald?

What's the difference between a lab-created emerald and a natural emerald? Is a synthetic gem a real gem? Learn the facts before you buy emerald jewelry.

Are White Aquamarines Genuine Aquamarines?

Aquamarine is the blue to blue-green variety of beryl. If you encounter so-called white aquamarines, buyer beware. Learn the facts about these gems here.

Faceted Gemstones And Light Return Measurements

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