Crystals & Stones

Celestine crystal specimen from Madagascar; photo by Didier Descouens, CC BY-SA 4.0 — Roosters Peacock crystal guide
Celestite (Celestine): The Stone of Peace, Reflection & Open Perspective
Celestite, properly Celestine, is strontium sulfate, SrSO4, an orthorhombic Baryte-group mineral known for pale blue crystals and a Mohs hardness of 3–3.5. Explore its mineral science, name history, modern symbolic... Read more...