Description: The name 'selenite' is mostly synonymous with gypsum but has been used historically to describe the transparent variety, as opposed to satin spar gypsum for the fibrous variety and alabaster for the fine-grained massive form. Gypsum has the same chemical composition as the mineral Anhydrite, but contains water in its structure whereas Anhydrite does not. Many Anhydrite specimens absorb water, transforming into the more common Gypsum. Some Gypsum specimens show evidence of this, containing growths of crumpling layers that testify to their expansion from the addition of water. All varieties of gypsum, including selenite and alabaster, are composed of calcium sulfate dihydrate (meaning has two molecules of water), with the chemical formula CaSO4ยท2H2O. Selenite contains no significant selenium; the similarity of names comes from both substances being named from the Ancient Greek word for the Moon. On Jun 16, 2024 at 11:47:12 PDT, seller added the following information:
Price: 19.99 USD
Location: Guangdong
End Time: 2024-08-16T18:42:08.000Z
Shipping Cost: 0 USD
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Return shipping will be paid by: Seller
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Country/Region of Manufacture: China
Available Variations
Color: 8-9cm
Price: 19.99 USD
Available Quantity: 5
Quantity Sold: 0
Color: 9-10cm
Price: 21.99 USD
Available Quantity: 5
Quantity Sold: 1
