mineral

Desert Rose

Gypsum rosette (Hydrous calcium sulfate, CaSO4·2H2O)

Hardness: 2 on Mohs scale; Color: Tan, sandy, or brownish-white; Luster: Pearly or earthy; Crystal structure: Monoclinic; Cleavage: Good in one direction; Specific gravity: ~2.3.

Hardness: 2 on Mohs scale
Color: Tan, sandy, or brownish-white
Luster: Pearly or earthy

Identified June 6, 2026More mineral →

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Physical properties

Hardness: 2 on Mohs scale; Color: Tan, sandy, or brownish-white; Luster: Pearly or earthy; Crystal structure: Monoclinic; Cleavage: Good in one direction; Specific gravity: ~2.3.

Formation & geological history

Formed in arid sandy conditions through the evaporation of salt basins. As water evaporates, gypsum crystals form in a rosette pattern, trapping sand grains within the structure.

Uses & applications

Primarily used for mineral collecting, home decor, metaphysical purposes, and education. Gypsum is also used in dry wall or as plaster of Paris.

Geological facts

Native Americans often believed these were carved by spirits. The 'petals' are actually flattened crystals that look like a rose in bloom.

Field identification & locations

Identified by its distinctive rose-like shape and sandy texture. Commonly found in deserts such as the Sahara or the Southwestern United States. It is very soft and can be scratched by a fingernail.

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