Rare Pentagonite on Grey Druzy Chalcedony - Pune, India (7.1cm)

This very rare specimen includes pentagonite crystals on sparkling druzy chalcedony with iron-rich basalt volcanic matrix - from the renowned Deccan Traps of Maharashtra, India. A rare dimorph of cavansite, pentagonite shares the same chemical composition but crystallises in a different crystal structure, making it highly sought after by mineral collectors.

Approximate Measurements - 7.1cm x 4.7cm

A Closer Look

This specimen formed inside an ancient volcanic cavity over millions of years. The natural blue pentagonite crystals grew on a sparkling layer of druzy chalcedony, a surface covered with microscopic quartz crystals. Beneath this sits iron-rich basalt, with its reddish-brown colouring produced by naturally occurring iron oxides.

This combination of pentagonite, druzy chalcedony and iron-rich basalt is characteristic of the famous zeolite deposits near Pune, Maharashtra, one of the world's best-known localities for pentagonite and cavansite.

Locality

Deccan Traps, Pune District, Maharashtra, India

Why This Piece Is Special

• Identified as pentagonite from the renowned Deccan Traps of Maharashtra, India
• Shows several minerals that formed at different stages inside an ancient volcanic cavity
• Collectable specimen from one of the world's best-known zeolite localities
• Natural combination of vivid blue crystals, druzy chalcedony and iron-rich basalt
  

Metaphysical Properties

• Communication
• Intuition
• Mental Clarity

Learn about the geological differences between these two dimorphs in our guide to Cavansite vs Pentagonite.