mineral

Desert Rose

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

AI-generated identification · may be incorrect

Hardness: 2 on Mohs scale (very soft); Color: Tan, white, or sandy; Luster: Pearly to earthy; Crystal Structure: Monoclinic; Cleavage: Good in one direction; Specific Gravity: 2.3

Hardness: 2 on Mohs scale (very soft)
Color: Tan, white, or sandy
Luster: Pearly to earthy

Identified June 25, 2026More mineral →

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Physical properties

Hardness: 2 on Mohs scale (very soft); Color: Tan, white, or sandy; Luster: Pearly to earthy; Crystal Structure: Monoclinic; Cleavage: Good in one direction; Specific Gravity: 2.3

Formation & geological history

Formed in arid sandy environments through the evaporation of shallow salt basins over hundreds to thousands of years. The crystals grow in circular plates, incorporating sand grains within the crystal structure.

Uses & applications

Primarily used as decorative collector specimens, metaphysical talismans, and in home decor. Gypsum is also used industrially in plaster and drywall.

Geological facts

The 'pedals' are actually lens-shaped crystals that cluster together. Because they contain sand, they are often the color of the desert they formed in. They are sometimes called 'Sand Roses' or 'Rose Rocks'.

Field identification & locations

Identified by its rosette shape and extreme softness (can be scratched by a fingernail). Commonly found in the Sahara Desert, Mexico, and Oklahoma (where it is the state rock). Keep away from water as gypsum is slightly soluble.