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Birthstone for October;   14th Wedding Anniversary Stone

Opal is a mineral species that is transparent to opaque.  The color of Opal is know to be natures Kaleidoscope, showing a strong play of rainbow colors.  One of the rarest types of Opal, is the Contra-Luz Opal.  Opal has a hardness of 5 to 6.5 on the Mohs scale.

The Opal gemstones for sale in this category are all natural gemstones!

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