The Specimen Library / Record
Celestine / Celestite
Strontium sulfate / mineral species
The pale blue crystals often sold as celestite are celestine—a soft, brittle sulfate mineral.
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01 · The material
Natural History
It can form in sedimentary deposits, cavities and hydrothermal settings. Blue color is familiar, but not mandatory.
02 · Observe
Under the Loupe
Celestine and barite can resemble one another. A cluster’s color alone will not resolve that comparison.
03 · Ownership
Collect & Care
Do not soak or scrub a fragile geode. Dust gently, protect the crystal tips and keep display conditions stable.
04 · The human story
History, Lore & Tradition
Documented history
The name alludes to its sky-blue color. “Celestite” remains a familiar trade spelling.
Sources & further reading
References are labeled by role. A source documenting a belief is not evidence of a medical or mineralogical effect. Reflection prompts are C&C editorial suggestions.
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- Collector Record · future free download
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- Coloring & Discovery Page · future low-cost resource
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