Identifying Synthetic Gems

Basic Terminology for Synthetic Gems

You should know the following definitions:

• Natural Gems — formed in the Earth
• Synthetic Gems — duplicates of natural gems grown in a lab
• Homocreates — synthetic gem materials with no natural counterparts
• Imitations — gemstones or other materials presented as other kinds of gems

You can find more information on these terms in our guide to gem classification.

Keep in mind that some of these definitions can overlap. For example, you may find a synthetic corundum stone offered for sale as an imitation aquamarine.

What to Look For First in Synthetic Gems

Examine the clarity and color of your gemstone.

• Very fine clarity may be the first indication you’re dealing with a synthetic, since few natural gems are clean to 10X, much less anything higher.
• Synthetic gems mimic the best of the natural gem world, so expect them to show fine color. For example, if you’re examining a stone with only modest saturation, you can bet you have a natural.

Some Caveats Regarding Clarity and Synthetic Gems

• If you can’t find natural inclusions with a loupe, you probably have a synthetic. While this isn’t proof, it’s a strong clue. You should

…