Zeolites are a large family of hydrated aluminosilicate minerals formed in volcanic environments, especially where lava meets mineral-rich groundwater. India is world-renowned for producing some of the finest Zeolite formations, often found alongside Apophyllite, Chalcedony, and other secondary minerals such as Stilbite.

This blue Chalcedony cut base, Zeolite, is densely coated in crystallised sparkles, giving it a cool, icy blue glow. This piece is almost black!