- Jachymov (St Joachimsthal), Jachymov (St Joachimsthal) District, Krusne Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Bohmen; Boehmen), Czech Republic
- Thumbnail, 1.5 x 1.0 x 0.9 cm
Sternbergite is a rare silver, iron sulfide and this excellent, rich thumbnail is from the Type Locality - Jachymov, Bohemia, Czech Republic. Scintillating to moderate-luster, burnished, violet-blue sternbergite blades and crystals comprise this thumbnail, which is solid sternbergite. Eye-visible crystals of sternbergite are rare and the large blade on the left side is 8 mm on this remarkable old specimen.