description Marcasite Overview
Marcasite is an iron sulfide mineral with the chemical formula FeS2 and an orthorhombic crystal structure. It has a pale metallic appearance that can resemble pyrite, but marcasite is less stable and may deteriorate when exposed to moisture or air. The name is also used in jewelry contexts, where small faceted pieces of marcasite or, frequently, pyrite have been mounted in silver settings, especially in older decorative designs.
help Marcasite FAQ
How good is Marcasite?
Marcasite scores 5.68/10 (Mediocre) on Lunoo, making it rated in the Gemstone category. Classic vintage jewelry material with metallic sparkle; usually pyrite in trade and lacks rarity or fine-gem prestige.
What are the best alternatives to Marcasite?
See our alternatives page for Marcasite for a ranked list with scores. Top alternatives include: Cuprite, Pyrite, Pigeon's Blood Ruby.
How does Marcasite compare to Cuprite?
See our detailed comparison of Marcasite vs Cuprite with scores, features, and an AI-powered verdict.
Is Marcasite worth it in 2026?
With a score of 5.68/10, Marcasite is a solid option in Gemstone. See all Gemstone ranked.
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