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Gypsum from Spain.
Stone dimensions: L: 185mm x W: 60mm.
Weight: 245g.
The chemical formula of gypsum is CaSO4-2H2O, which means it is composed of calcium sulfate dihydrate.
Hardness: The hardness of gypsum is 2 on the Mohs scale, making it a relatively soft mineral.
Density: The density of gypsum varies from 2.3 to 2.4. This means that gypsum is relatively light compared with other minerals.
Gypsum is generally colorless or white, but can also appear in shades of gray, brown, yellow or red, depending on the impurities present.
