This large 100% Natural Ethiopian opal specimen has a two tone body color part black opal and part clear crystal. It has soft green fire colors. The opal has cracks, and there for is graded as a "specimen". The cracks are visible on the surface, see photos and video for a closer look . WATCH A YOU TUBE VIDEO OF THIS OPAL https://youtu.be/-L1uT1ZWI0A Opal Size : 52.6 grams 5.6 X 4.8 X 18.8 cm Opal Type: Black/ Crystal Wello Ethiopian Opal Opal Cut By: Gabriel M.