This was sold facet grade x-hard fire opal. It supposedly is easier to facet and takes a polish better then regular old fire opal. We haven't had a chance to test it out, but it's really pretty! Some of the pieces do have crazing in them that hopefully the photos are picking up. Family : Opal Variety : Fire Origin : Brazil Size : Treatment : none known Total Carats : 29.68 Clarity : %
Measurements in millimeters(mm) Weight in carats(ct) (for grams divide carats by 5) Graph paper is 1/4 inch squares.