description Prehnite Overview
Prehnite is an orthorhombic calcium aluminosilicate mineral with the formula Ca2Al2Si3O10(OH)2. It was described in 1788 from the Karoo dolerites near Cradock in South Africa and named for Hendrik von Prehn, a Dutch colonial officer credited with bringing specimens to Europe. Pale green material is used as a gemstone, and gem-quality deposits are known around Wave Hill in Australia's Northern Territory. [Mindat mineral data](https://www.mindat.org/min-3277.html)
help Prehnite FAQ
How good is Prehnite?
Prehnite scores 4.19/10 (Poor) on Lunoo, making it rated in the Gemstone category.
What are the best alternatives to Prehnite?
See our alternatives page for Prehnite for a ranked list with scores. Top alternatives include: Prasiolite, Emerald, Demantoid Garnet.
How does Prehnite compare to Prasiolite?
See our detailed comparison of Prehnite vs Prasiolite with scores, features, and an AI-powered verdict.
Is Prehnite worth it in 2026?
With a score of 4.19/10, Prehnite is a solid option in Gemstone. See all Gemstone ranked.
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