description Cassiterite Overview
Cassiterite is the naturally occurring mineral form of tin(IV) oxide, with the chemical formula SnO₂, and it is the principal ore of tin. It is usually brown, reddish brown, black, or otherwise dark, with a tetragonal crystal structure, Mohs hardness of about 6 to 7, and a high specific gravity near 7. Cassiterite occurs in hydrothermal veins and granite-related deposits as well as weathering-resistant placer deposits; transparent crystals from places such as Bolivia can be cut as rare collector gemstones.
help Cassiterite FAQ
How good is Cassiterite?
Cassiterite scores 6.13/10 (Fair) on Lunoo, making it rated in the Gemstone category. High refractive index and collector faceting appeal; dark color, softness, and tin-ore identity limit broad desirability.
What are the best alternatives to Cassiterite?
See our alternatives page for Cassiterite for a ranked list with scores. Top alternatives include: Andradite Garnet, Franklinite, Demantoid Garnet.
How does Cassiterite compare to Andradite Garnet?
See our detailed comparison of Cassiterite vs Andradite Garnet with scores, features, and an AI-powered verdict.
Is Cassiterite worth it in 2026?
With a score of 6.13/10, Cassiterite is a solid option in Gemstone. See all Gemstone ranked.
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