very dark Uruguay amethyst geode with window and urchins

A very dark Uruguayan amethyst geode with a window and hedgehog formations. A polished opening in the outer wall reveals the cavity, which contains dense, radially-radiated crystal clusters.

The window is a deliberately placed cut that makes the crystal cavity visible without breaking open the geode. The hedgehog formations are dense, radially-radiated aggregates of smaller points that resemble hedgehog spines.

Uruguayan amethyst is considered the darkest, most deeply violet-colored amethyst variety worldwide. The Uruguayan deposits in Artigas and Salto supply this material from the Arapey Basalt Formation.

What makes this piece special: the combination of premium color, window cut, and hedgehog clusters in one piece. Three collector's characteristics in a display-cabinet dimension.