Bournonite from La Mure coal mines, La Mure, Isère, Auvergne-Rhône-Alpes, France. Comes with certificate of authenticity Stone type: Bournonite Dominant color: Multicolor Origin : France Average Weight (Carats): 45.04 ct Dimensions (mm): 26 x 18 x 16 mm Ref. : SKU017886