mineral

Likely marcasite jewelry (metal brooch and earrings)

Marcasite, FeS₂ (often pyrite or marcasite stones set in silver)

AI-generated identification · may be incorrect

The image shows a vintage-looking floral jewelry set with small reflective faceted stones; these may be marcasite, but the photo does not confirm their identity. Marcasite and pyrite are brassy-gray, metallic, and Mohs 6–6.5; jewelry stones are typically tiny rose-cut facets in a metal setting.

Identified October 12, 2026More mineral →

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Physical properties

Formation & geological history

Marcasite forms in low-temperature sedimentary and hydrothermal environments; pyrite commonly forms in a wider range of geological settings. Geological age depends on the source deposit and cannot be determined from the jewelry.

Uses & applications

Marcasite-set jewelry is used for decorative brooches, earrings, and other accessories; the pictured object is a manufactured ornament rather than a natural specimen.

Geological facts

Despite its name, most jewelry sold as “marcasite” is actually pyrite, which is more stable. The visible metalwork and stones cannot be reliably identified from this image alone.

Field identification & locations

This is clearly jewelry, but the stones could be marcasite/pyrite or another reflective material; inspect under magnification and test the setting or stones professionally. No locality can be inferred from the image.