- Arsenopyrite, Quartz
- Cabinet, 12.6 x 8.4 x 4.2 cm
- Dal'negorsk (Dalnegorsk; Tetyukhe; Tjetjuche; Tetjuche), Primorskiy Kray, Far-Eastern Region, Russia
Sharp, metallic crystals of arsenopyrite in a fine balance with milky quartz crystals. The arsenos have a nice bronzy luster. On the back side of this large and impressive specimen is massive sphalerite.