Under 03 weight: 74.8 carats. size: 31 x 22 x 6.5 mm. Boulder Opal. A wild stone. The only part polished is the back, and it's got a good sized chip out of it (won't affect setting). The front is the natural face of the seam as it was split, just shaped off into a rectangle. Belt buckle or pendant.
Price: $90