Marcasite Round Cabochon

The yellow-to-brown metallic sheen of this round marcasite gemstone is reminiscent of old sepia-toned photographs, making it a perfect choice for jewelry that has a vintage style. Marcasite is composed of iron sulfide and, while it is closely related to pyrite, it has a distinctly different crystal structure. Because its structure is orthorhombic (rather than cubic like pyrite), marcasite is less suitable for cutting and faceting and, in many jewelry applications, is actually yellow pyrite. When polished, the gemstone has a bright metallic luster, and ranges in color from pale yellow to brown. Jewelry made from marcasite/pyrite dates back to ancient times and the folklore surrounding this gem holds that it can dispel negative energy and enhance communication skills. Round-cut gemstones are highly popular and the most commonly available. Rio round gemstones are calibrated for size and hand inspected to ensure maximum attractiveness.

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Gemstone type: Marcasite
Stone shape: Round
Stone size: 1mm, 2mm, 1.5mm
Stone type: Natural
Color: Metallic Gray
Enhancement: None (N)
Mohs hardness: 6–7.5
Refractive index: Nil
Specific gravity: 4.8–5.2
Mineral source: PERU
Cutting center: Switzerland