These polished spheres are made from natural selenite, a transparent to translucent variety of gypsum known for its pearly luster and fibrous structure. Selenite spheres are often used for display, highlighting the mineral’s clarity and natural striations.
Details:
- Material: Natural selenite (CaSO₄·2H₂O)
- Size: Small, about 1 inch in diameter (exact size may vary)
- Appearance: Smooth, polished spheres; translucent to transparent with subtle striations
- Formation: Forms in evaporite deposits from the evaporation of sulfate-rich waters
- Physical Properties: Mohs hardness 2; vitreous to pearly luster; soft and easily scratched
- Educational Value: Demonstrates sulfate mineral formation, crystal habit, and fibrous mineral structure
These small selenite spheres are a simple and elegant way to explore gypsum’s properties and crystal formation.
