mineral

Desert Rose

Gypsum (Selenite) variety, CaSO4·2H2O

Hardness: 1.5-2 on Mohs scale; Color: Tan, sandy brown, or white; Luster: Pearly to dull/earthy; Crystal structure: Monoclinic; Cleavage: Good (hidden by sand inclusions); Specific gravity: 2.3

Hardness: 1
Color: Tan, sandy brown, or white
Luster: Pearly to dull/earthy

Identified June 24, 2026More mineral →

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Physical properties

Hardness: 1.5-2 on Mohs scale; Color: Tan, sandy brown, or white; Luster: Pearly to dull/earthy; Crystal structure: Monoclinic; Cleavage: Good (hidden by sand inclusions); Specific gravity: 2.3

Formation & geological history

Formed in arid sandy conditions through the evaporation of shallow salt basins or groundwater. These crystals grow as a cluster of flat blades, incorporating sand grains within their structure. Most are from the Holocene to Pleistocene epochs.

Uses & applications

Primarily used as decorative specimens, in crystal healing collections, and as educational geological samples. Gypsum itself is used to make plaster and drywall.

Geological facts

The 'petals' are actually flattened crystals that expand due to the pressure of sand around them. They are found in deserts worldwide, most notably the Sahara and the Chihuahuan Desert.

Field identification & locations

Identified by its distinctive rose-like shape and sandy texture. It is very soft and can be scratched with a fingernail. Found in desert salt flats or dry lake beds. Collectors should handle gently as the blades are fragile.