This is an outstanding combination piece from the well-known Dzhezkazgan mine. Bornite crystals are quite rare, worldwide, and this mine produced some of the world´s finest in the 1990s to early 2000s. These cluster range up to 2.8 cm and some crystals are twinned. The luster is very good; dark and metallic with a golden iridescence that has flashes of blue, purple, and red. The Bornites are accompanied by white Calcite and tiny Quartzes. Classic and highly representative material from this well-known locality, these are now available only from recycled collections.