A large cluster of deep emerald-green, pronounced and clean Dioptase crystals.  A lot of smaller druzy crystal too as well as growth interference and release marking from separated Dioptase crystals. A highly prized and intense coloured copper-based mineral - chemical composition : CuSiO.  First ever discovered in 1797, this mineral can occur quite notably in the Tsumeb mine of Namibia, though this particular Dioptase cluster is sourced from Kazakhstan.

Acicular radial sprays of Shattukite too - soft powdery blue whirls, seen mainly over a minor Calcite pocket, upto 3mm.