Sweetwater Mine, Viburnum Trend District, Reynolds Co., Missouri, USA - Glassy yellow mostly gemmy prismatic, double terminated, crystals of calcite measuring to 5.3 cm in length set nicely upon matrix. One cleaved crystal termination at the extreme far right edge of the matrix, this away from the piece, as seen. The prominent crystal is in excellent condition. Measures 9.0 x 5.0 x 3.0 cm.

Trepča, Kosovska Mitrovica, Kosovo - A great real esthetic specimen with well defined bright arsenopyrite crystals surrounded by quartz crystals ! There are also some sphalerite enclosed and rhodochrosite. A real nice specimen rare to find ! Overall size is 3.8 × 3 × 2.3 cm. Weight is 25 gr

Uchucchacua Mine, Lima Department, Peru - Semi lustrous sharp crystals to 1.5 cm in size across the top of this matrix with minor rhodochrosite. In very good condition and quite fine for the species. Overall size is 6.0 x 3.5 x 3.0 cm. Weight is 140 gr.