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This is a very nice Selenite crystal slab mineral specimen from Mexico. It is water clear to opaque.
It measures approx 1.5 in thick by 3.75 in wide by 6 in long.
Selenite is part of the Gypsum (hydrous calcium sulfate) family of minerals. It rates a 1 1/2 - 2 on the Hardness scale.
Caution: You may clean the specimen with water, but do not leave it submerged. It will degrade. {sku 975}
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