extremely rare amethyst with exceptionally large calcite crystals from Santa Catarina, Brazil

An extremely rare amethyst with unusually large calcite crystals from Brazil, Santa Catarina. The secondary calcite phase towers over the purple amethyst matrix in unusually large scalenohedral tips.

Very large calcite crystals on an amethyst matrix are a top rarity due to their deposit conditions. Such crystal sizes indicate stable solution conditions over very long periods of time.

The Santa Catarina deposit provides the world's highest quality material for multi-mineral constellations. The size contrast is striking: the calcite tips reach dimensions that normally only primary phase crystals have.

The piece has compact collector dimensions. The material value is concentrated on the premium mineralogical property and not on the block volume.

A Brazilian collector's piece with documented Santa Catarina provenance and multi-mineral top classification.