Astrophyllite 10mm Round - 15-16 Inch - CLEARANCE Silica Gem Silica is the rarest

Gem Silica is the rarest and highest form of Chrysocolla

The boundaries of the included crystals are visible and are known as “phantoms

The color of Smoky Quartz is due to natural irradiation and traces of aluminum within the cryst

Pyhsically

Sizes of rough cut specimens will vary in size

Astrophyllite 10mm Round - 15-16 Inch - CLEARANCE Silica Gem Silica is the rarestAstrophyllite is a very rare, brown to golden yellow hydrous potassium iron titanium silicate mineral. Astrophyllite gets its name from the Greek words astron meaning "star" and phyllon meaning "leaf". The mineral is heavy, soft and fragile, and was first discovered in 1854 in Norway.