Prehnite Tumbled Stone Crystal Sphere botanically a member of the

botanically a member of the cypress family rather than a true cedar

often gridded with fine white

hard for so metallic a mineral

Its crystal surface reflects light with quiet precision

resilient presence

Prehnite Tumbled Stone Crystal Sphere botanically a member of thePrehnite small tumble polished stones of pale celadon to yellow green, translucent and lit from within like sea glass, the first mineral named after a person. Sold in a small set. From Mali. It is a calcium aluminium silicate that grows in the gas cavities of volcanic basalt; light passes a little way in and scatters, giving the clouded, lit from within look often compared to sea glass. Named in 1788 after Colonel Hendrik von Prehn, the first mineral