Rock Identifier
Selenite (gypsum) wand (Gypsum, CaSO₄·2H₂O; likely satin spar or clear selenite variety) — mineral
mineral

Selenite (gypsum) wand

Gypsum, CaSO₄·2H₂O; likely satin spar or clear selenite variety

AI-generated identification · may be incorrect

Mohs hardness 2; translucent white to honey-colored, pearly or vitreous luster, monoclinic crystals, and perfect one-directional cleavage. The elongated prismatic shape and fibrous internal striations are typical of a polished gypsum wand.

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Physical properties

Mohs hardness 2; translucent white to honey-colored, pearly or vitreous luster, monoclinic crystals, and perfect one-directional cleavage. The elongated prismatic shape and fibrous internal striations are typical of a polished gypsum wand.

Formation & geological history

Forms by evaporation in sedimentary evaporite deposits, commonly from late Permian to modern saline-basin environments. Individual specimens may be natural crystals that were trimmed or polished by hand.

Uses & applications

Used as a decorative and metaphysical crystal, while gypsum is also used in drywall, plaster, cement, soil amendment, and dental materials. This small polished specimen typically has modest collector value.

Geological facts

Selenite is named after Selene, the Greek Moon goddess, because of its moonlike sheen; it is not the same material as selenium. It is very soft and can be scratched easily with a fingernail.

Field identification & locations

Identify it by its softness, translucent appearance, straight cleavage, and tendency to form clear or fibrous blades; common sources include Mexico, Morocco, the United States, and Spain. Keep it dry and avoid abrasion or soaking, as gypsum can scratch and slowly dissolve.