Brilliant sharp striated cubic crystals of pyrite to 1.8 cm on edge across the top of this lustrous black sphalerite crystal matrix with quartz. The sphalerite crystals measure to 1.2 cm in size. This is in very good condition with only minimal micro-chipping to some of the quartz crystals at the far lower right side of the piece. Overall size is 6.0 x 5.0 x 2.0 cm. Ex D. Weinrich collection.

Lanqiao Mine, Liancheng, Longyan, Fujian, China - Platy pink crystallized rhodochrosite across the front of this matrix. Micro-chipping present but sparse as seen, the piece in good condition. Size: 4.2 x 3.7 x 1.0 cm. Weight is 15 gr

N'Chwaning mines, Northern Cape, South Africa - Prismatic crystals of sturmanite to 1.2 cm in length set nicely up on matrix. One crystal shows damage, this still very nice for the species. Originally obtained through collector Bill Pinch in the early 1980s. Overall size is 6.0 x 6.0 x 0.5 cm. Ex Stan Woollams collection

Brumado, Bahia, Brazil - Very nice, bright uvite crystals on magnesite crystalline matrix. The uvite have a nice deep green color and show greatly on the magnesite cluster. The main uvite is 2.5 cm wide ! A very nice brazilian specimen. Overall size is 4x3.5x3.3 cm.Weight is 36 gr