Great deep purple amethyst geode from Uruguay

A deep purple amethyst geode from Uruguay in columnar geometry. The strong color and distinctive vertical shape define this piece as a premium collector's item of the highest gemological class.

Uruguayan amethyst crystallizes in volcanic geodes of the Arapey Basalt Formation. This material is considered the darkest, most deeply violet-colored amethyst variety worldwide. The intense color is created by iron substitutions in the quartz lattice.

The columnar geometry with a narrow cross-section and full height is a distinctive vertical shape. In the natural geode, it follows the cavity course of the lava bubble. Such columnar geodes are a unique shape variant in Uruguayan material.

The Uruguayan deposits in Artigas and Salto supply the premium material. The combination of columnar shape and deep purple color is a double collector's classification.

A Uruguayan collector's piece with columnar geometry and premium color.