Does anyone know anything about Prehnite?
Prehnite is a Calcium aluminium hydroxysilicate (orthorhombic with a
hardness of 6 on Moh’s scale) and considered an ornamental stone
rather than a gemstone. It is sometimes clear enough to be faceted but
generally it’s a translucent material with a radiating crystalline
structure which occasionally can give a cat’s-eye effect. It’s found
in Scotland, France and at Prospect, near Sydney, Australia.
Not sure of sources, especially in Miami. Hope this is of some
Renate, Adelaide, South Australia