mineral

Desert Rose

Gypsum (Calcium Sulfate Dihydrate) with Sand Inclusions, CaSO4·2H2O

Hardness: 1.5-2.0 on Mohs scale; Color: Tan, brown, or sandy-cream; Luster: Pearly to earthy; Crystal Structure: Monoclinic (rosette habit); Cleavage: Perfect in one direction; Specific Gravity: 2.3

Hardness: 1
Color: Tan, brown, or sandy-cream
Luster: Pearly to earthy

Identified June 24, 2026More mineral →

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Physical properties

Hardness: 1.5-2.0 on Mohs scale; Color: Tan, brown, or sandy-cream; Luster: Pearly to earthy; Crystal Structure: Monoclinic (rosette habit); Cleavage: Perfect in one direction; Specific Gravity: 2.3

Formation & geological history

Forms in arid sandy conditions through the evaporation of shallow salt basins or groundwater. These crystals precipitate as bladed clusters that incorporate surrounding sand grains.

Uses & applications

Primarily used as a decorative collector's specimen, in metaphysical practices, and occasionally in lapidary work or as a source of gypsum for plaster.

Geological facts

The unique 'petals' are actually flattened crystals that grow outward in a radiating pattern. While mostly gypsum, some desert roses are formed from barite, which is much heavier.

Field identification & locations

Identified by its distinctive rose-like shape and sandy texture. It is very soft and can often be scratched with a fingernail. Commonly found in the Sahara Desert, Mexico, and the Southwestern United States.

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