This specimen features an area of beautifully crystallized dioptase set perfectly across the top of the calcite. The dioptase crystals are sharp and glassy with bright lustre, remarkable for Altyn Tyube – they also have some good translucens with internal glow under the display lights. In excellent condition – a few small incomplete crystals, minor relative to the piece, (primarily at the edges of the cluster). The piece has been prepared using a saw with a cut uon the underside so that it stands perfectly as photographed. This is gorgeous piece – the best intense green and brililant lustre, and aesthetic overall composition sitting on the calcite.