Morocco
Produces large satin-spar and desert-rose gypsum specimens.
Crystals gemstone profile
Selenite
A Soft, Satin Variety of Gypsum
Selenite is a transparent-to-fibrous variety of gypsum known for pearly luster and delicate, blade-like crystals. At Mohs 2, it scratches easily and should stay dry.
Gemological Properties
- Chemical composition
- Hydrated calcium sulfate (CaSO₄·2H₂O)
- Crystal system
- Monoclinic
- Hardness (Mohs)
- 2
- Color range
- Colorless, white, peach, or pale gray
- Primary sources
- Morocco, Mexico, USA, Greece, Australia
- Luster / transparency
- Vitreous to pearly / Transparent to translucent
Science, structure & identification
A practical field note on what Selenite is made of, how it forms, how light behaves inside it, and what professionals look for when identifying it.
Browse the plain-language gemstone glossary or learn how to read a lab report.
- Mineral family
- Gypsum · hydrated calcium sulfate
- Formation
- Gypsum precipitates from evaporating saline water and also forms in hydrothermal and sedimentary environments. Selenite is a transparent or crystalline variety.
- Optical behavior
- It is biaxial with strong cleavage and pearly to vitreous luster. Satin spar scatters light along parallel fibers and can show a moving sheen.
- Treatments & enhancements
- Selenite is usually untreated, though dyed, polished, glued, or coated decorative specimens exist.
- Identification notes
- Very low hardness, perfect cleavage, soluble behavior, and monoclinic crystals distinguish gypsum from harder white minerals.
- Care & durability
- At Mohs 2, selenite scratches with a fingernail and can dissolve or dull with water. Keep it dry and away from abrasives.
Where Selenite is found
Representative source regions, not a map of every occurrence.
Mexico
Naica is famous for giant gypsum crystals.
United States
Gypsum deposits occur widely, including clear and fibrous specimens.
The color spectrum of Selenite
Color is shaped by chemistry, structure, inclusions, and light. These are representative varieties—not a promise that every stone will show every shade.
Clear blade
Transparent gypsum with a glassy to pearly sheen.
Satin spar
Fibrous gypsum with silky chatoyancy rather than transparent clarity.
Peach
Trace impurities create warm peach or orange coloration.
Trusted references
Traditional beliefs & modern crystal claims
Gemstones have rich symbolic histories. The claims below are presented as folklore, cultural tradition, or modern pseudoscience—not as proven medical, psychological, or supernatural effects.
Historical lens
Modern crystal traditions call selenite a cleansing or clarity stone.
Its white, luminous appearance supports the symbolism, but it does not cleanse people, spaces, or water.
Historical lens
The name's connection to Selene inspired lunar and dream symbolism.
This is a cultural association, not evidence of an effect on sleep or consciousness.
Gemological properties can be measured and tested. Symbolic meaning is personal and cultural; crystals should never replace qualified medical or mental-health care.
History of the Selenite
Mineral & material history
The name derives from Selene, the Greek moon goddess, because fine material can resemble moonlight. Gypsum has also been used for plaster and carving for millennia.
Cultural Significance
Modern crystal traditions associate selenite with clarity, ritual cleansing, and moon symbolism. These associations are cultural or spiritual traditions, not scientifically demonstrated effects.
Cultural meanings and historical beliefs are included for context. They are not scientific evidence or medical advice.
Traditional beliefs & legend
Modern crystal traditions include symbolic meanings for Selenite. These beliefs are presented as folklore and spiritual practice, not as medical guidance or evidence of physical effects.
This section records cultural history and folklore. These stories are not scientific evidence or medical guidance.
Expert Buying Guide
Keep selenite away from water and abrasive surfaces. Expect natural cleavage and fibrous texture, and avoid pieces with unstable flakes or undisclosed coatings.
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