Educational set of Cambodian Zircons.

The blue is considered the king of zircons and is achieved by heating in an oxygen reduced environment. The orange is the result of heating in an oxygen rich environment and coffee color piece is how these zircons look when found in the ground!

A great educational set showing one of the reasons we heat gemstones and also the different results heating can achieve.

3 pieces /6.309 grams / 31.545 carats / 10.5 carats average / clean
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