Description: This is the Prehnite specimen, from Sichuan, China, wide around 18cm. Prehnite is the mineral contain Ca, Al, Si, O, H elements, Mohs hardness is 6-6.5. For this specimen, the green spherical Prehnite has interesting shape, associated with small shinny Quartz on the matrix, compared with other finds from this locality, its color is deeper, luster is brighter! Very beautiful Prehnite specimen!