Tremendous connoisseur specimen from unique find in Tantara Mine of Shattuckite pseudomorph after Dioptase, after Calcite. The secondary Copper silicate Shattuckite replaces Dioptase crystals replacing the first generation of pointy Calcite crystals. Shattuckite has intense and saturated dark blue color. Some parts of the crystals are not replaced and are Dioptase.  Some contacts. On acrylic base.

Killer double pseudomorph!