Guide
Cobalt specimens for sale
2 for sale · $600–$1,795 USD
9 in the gallery
Cobalt is a metallic sulfide mineral with a lustrous, steel-gray to bluish cast and a submetallic to metallic luster. It typically forms in crystalline aggregates and can occur as elongated, prismatic crystals or masses, sometimes showing hints of blue-gray color that hints at its namesake element. In mineral collections, cobalt specimens are valued for their distinctive hue and association with sulfide-rich environments, often displaying good crystal form when found in hydrothermal deposits.
- Formula
- Co9S8
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About Cobalt
Notable specimens come from classic cobalt-bearing localities in DR Congo, Morocco, Namibia, and Mexico. These sources have produced well-formed crystals and sizeable aggregates that appeal to collectors seeking representative sulfide minerals with a strong color signature and provenance. The mineral is appreciated for its chemistry and its role in historical and modern metallurgy, making it a staple in comprehensive sulfide lineups and local geological history. Collectors seek cobalt for its visual contrast, crystallographic clarity, and the insight it provides into ore-forming processes.