Top quality 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. The Shattuckite has intense and saturated dark blue color to superb rich royal blue areas. Some small damages.

Killer double pseudomorph!