Synthetic Gemstone Guide

Synthetic Gemstone Guide

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Discovering California Turquoise

Discovering California Turquoise

A change in perspective — sometimes literally — could help you discover Nature’s beauty. In this article, IGS member Richard Edley shares his experiences discovering California turquoise and offers advice on desert prospecting. Prospecting in the Mojave Desert...
What is Gemstone Transparency ?

What is Gemstone Transparency ?

Like colors, gemstone transparency — whether a gem is opaque, translucent, or transparent — is a result of light interacting with the gem. Gemstone transparency isn’t a precise basis for identifying gem species. However, the presence and degrees of translucence...
What’s the Difference Between Rubies and Pink Sapphires ?

What’s the Difference Between Rubies and Pink Sapphires ?

What’s the difference between rubies and pink sapphires? According to one old joke, that depends on whether you’re the buyer or the seller. In fact, there is no general agreement on where to draw the line, but that line is certainly pink. Defining Ruby and...
How to Clean Your Gemstone Jewelry

How to Clean Your Gemstone Jewelry

What do you need to clean your gemstone jewelry? For many pieces, mild detergent, warm water, and a soft brush are a good start. However, before you decide to clean your collection yourself, or even if you leave it to a professional jeweler,  add a little gemology to...