description Neptunite Overview
Potassium sodium lithium iron titanium silicate mineral forming black prismatic crystals with deep red internal color; first described in 1893 from Greenland.
help Neptunite FAQ
How good is Neptunite?
Neptunite scores 6.38/10 (Fair) on Lunoo, making it rated in the Gemstone category. Striking black-red prismatic crystals are prized by collectors; opaque look and rarity limit broader gem status.
What are the best alternatives to Neptunite?
See our alternatives page for Neptunite for a ranked list with scores. Top alternatives include: Kornerupine Cat's Eye, Tremolite, Gahnite.
How does Neptunite compare to Kornerupine Cat's Eye?
See our detailed comparison of Neptunite vs Kornerupine Cat's Eye with scores, features, and an AI-powered verdict.
Is Neptunite worth it in 2026?
With a score of 6.38/10, Neptunite is a solid option in Gemstone. See all Gemstone ranked.
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