The Art and Science of Identifying Gemstones


Step 3: Practical Gemology

Lesson 24

Trigon inclusions are part of a natural, uncut diamond's original crystal structure. These were photographed on the surface of a rough diamond through a microscope. If trigons are found on a faceted gemstone girdle, it's a good indication the stone is a natural diamond. Identifying inclusions is just one step in the process of identifying gemstones. “Diamond Face Trigons Scale” by Gump Stump is licensed under CC By-SA 3.0
Trigon inclusions are part of a natural, uncut diamond’s original crystal structure. These were photographed on the surface of a rough diamond through a microscope. If trigons are found on a faceted gemstone girdle, it’s one indication the stone is possibly a natural diamond. Identifying inclusions is just one step in the process of identifying gemstones. “Diamond Face Trigons Scale” by Gump Stump is licensed under CC By-SA 3.0

Premium Article

This is a Premium Article. Please become a member to read this entire article and gain access to hundreds more like it.

Membership options