This is an exceptional, large Prehnite pseudomorph after Laumontite specimen with lustrous, transparent and translucent, rectangular Apophyllite crystals. Crystallized Prehnite replaced prismatic crystals that were once Laumontite.  A less common mineral occurrence. 238 grams. Free domestic shipping. Click to buy!

This fine specimen features fascinating finger-like stalks, some stalactite-like, of pale, light blue-green Prehnite.  Crystallized on both sides, presenting as a epimorph; looking like where the Laumontite dissolved, leaving a cast appearance on the underside of the specimen. A very aesthetic specimen for your collection. Mineral collectors believe the availability of specimens of this type will be more and more rare as time passes. 

Measures: 4.81" x 4.68" x 1.33" or 122.2mm x 118.9mm x 33.9mm. 

Source: Bombay Quarry, Mumbai District,  Maharashtra, India. Obtained from our contact that has a direct relationship with the owners of the mines in India.