Euclase Crystal | Ouro Preto, Minas Gerais, Brazil

Euclase from Ouro Preto is already a collector's mineral — but this example stands out even within that category. The size alone is notable: euclase crystals of this scale are genuinely uncommon, and finding one with this level of quality intact at an unusually large size is the kind of thing that doesn't happen often.

The blue zoning is clean and well-defined, the termination is sharp and undamaged, and the back of the crystal carries natural etchings — geometric surface markings that formed during the crystal's growth and give it a texture and depth that a plain, smooth face can't match. It's a piece that looks different depending on which angle you're viewing it from.

• Size: Unusually large for euclase — a genuinely scarce find at this scale
• Color zoning: Good blue zone — clean and well-defined
• Termination: Nice — sharp and intact
• Etchings: Natural etchings on the back face — geometric surface detail formed during crystal growth
• Locality: Ouro Preto, Minas Gerais, Brazil — the definitive locality for fine euclase
• Form: Natural, uncut specimen

A large, characterful euclase from the classic locality — the kind of piece that anchors a Brazilian mineral collection.