An astounding 5 minerals are represented in this amazing miniature. Cavansite and Pentagonite are the two best represented, further inspection reveals tiny blades of Stilbite on the Pentagonite and even cubic Calcite on the Cavansite! Heulandite is the base mineralization upon the Basalt matrix. These natural rich blue minerals are highly desirable among collectors. The Wagholi Quarry of Pune, Maharashtra, India was the only mine where large, lustrous crystals of this type have been found. This legendary location has been both closed and overbuilt, making these rare crystals increasingly hard to find. 1" x .5" x .75", 25 cts, .18 oz.