Sphene
Curated by Maggie Liu · Updated:
About Spheneextended article
Sphene (titanite)
Sphene — titanite in modern nomenclature — is a calcium titanium silicate named for its distinctive wedge-shaped crystals (Greek sphenos, wedge). Its claim to fame is optical: dispersion higher than diamond's, giving cut stones and even rough crystal faces an exceptional colored fire. Typical colors run yellow-green to brown; gem-grade material is prized despite modest hardness (5–5.5).
Frequently asked questions
What is the chemical formula of Sphene?
The chemical formula of Sphene is CaTiSiO5.
What crystal system does Sphene belong to?
Sphene crystallises in the Monoclinic crystal system.
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