$1,000.00 €905 £770.00 approx. This specimen is priced in US dollars, all other prices are approximate.
This specimen is composed entirely of the copper sulphide mineral Chalcocite and is from the St. Just mining district, near to Land’s End. Intergrown, steel-blue hexagonal Chalcocite crystals form a tight cluster with razor-sharp edges and beautifully striated faces. The largest crystal measures 1.7 cm across its flats and on some surfaces, micro-granular crystals of a bluish-green mineral occur, probably Paratacamite.