Pentagonite on Chalcedony Rare Find Natural Mineral Specimen # B 5793

Features:

Primary Mineral: Pentagonite
Secondary Mineral: Chalcedony
Size: 3.5 x 3 inches (8.9 x 7.6 cm)
Size Class: Small Cabinet
Weight: 265 g (9.3 oz)
Locality: Pune, Maharashtra, India

A glossy, neon-blue pentagonite spray tucked inside a small cavity of rust-pink and white chalcedony, from Pune. The blue crystals stand out vividly against the warm, rough-textured matrix.

Pentagonite is the rarer dimorph of cavansite: the same calcium vanadium silicate chemistry in a different crystal structure. It typically forms twinned crystals with a five-sided, star-like outline, and nearly all fine examples come from the Pune district.

A small-cabinet pentagonite specimen for collectors of rare Indian minerals.