This is an unpolished slice of Opal Fluorite 'Tiffany Stone.' The material is rare and is sometimes found in Bertrandite, a mineral with the element of beryllium in it. This piece has varying shades of a light purple to a deep, dark royal purple, and black lines. Some neat patterns in it, and just a beautiful slab as is. The slab feels nice and solid. There is a small open pocket, roughly 1/4" square, with sparkling crystals gleaming, and a couple tiny 'pin-prick' openings on the other side. It measures roughly 4" x 4" and just over 1/4" thick (7 mm). It weighs 173 grams, or 6.1 ounces. Gorgeous slab of this rare material.
U.S. shipping cost: $8.95
Bertrandite Slab Item# 5783 Price: $60.00