mineral
Desert Rose (Gypsum Rose)
Gypsum (CaSO4·2H2O) with inclusions of sand
Hardness: 1.5 - 2 on Mohs scale. Color: Tan, beige, light brown, or reddish-brown due to sand content. Luster: Vitreous to pearly, dull on outer edges. Crystal Structure: Monoclinic (rosette cluster of flattened blades). Cleavage: Perfect in one direction, though often obscured by rosette growth.
- Hardness
- 1
- Luster
- Vitreous to pearly, dull on outer edges
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Physical properties
Hardness: 1.5 - 2 on Mohs scale. Color: Tan, beige, light brown, or reddish-brown due to sand content. Luster: Vitreous to pearly, dull on outer edges. Crystal Structure: Monoclinic (rosette cluster of flattened blades). Cleavage: Perfect in one direction, though often obscured by rosette growth.
Formation & geological history
Formed in arid, sandy environments such as deserts through the evaporation of shallow, mineral-rich water basins. As water evaporates, hydrated calcium sulfate crystallizes around sand grains, creating interlocking blade-like petals.
Uses & applications
Popular among rock collectors, used in ornamental decor, mineral displays, and metaphysical crystal practices.
Geological facts
The 'petals' of the desert rose are individual crystals that radiate outward. Although most desert roses are formed from gypsum, similar rose-like formations can also be composed of baryte (barite), which are denser and heavier.
Field identification & locations
Identified by its distinctive rosette or rose-flower arrangement of thin, bladed crystals mixed with sand grains. Found abundantly in desert regions such as the Sahara (Algeria, Morocco, Tunisia), Mexico, Australia, and the southwestern United States (Arizona, New Mexico).
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Mineral/Rock