ALGT REPORT Species ..................................................................................... Natural Opal Variety ....................................................................................... Crystal Opal Shape & Cutting Style ............................................... Pear, Cabochon Measurements ......................................... 25.33 x 11.94 x 10.79 mm Carat Weight ........................................................................... 18.32 Carat Color ....................................................... White + Play of Colors (Vivid) Transparency ......................................................................... Transparent Optical Effect ........................................................................ Opaliscence Origin .................................................................................................. Ethiopia Origin determination is an expert opinion based on microscopic examination, spectroscopic features and chemical trace element analysis. No indication of treatment. May be called "Water Opal" in the trade. Ps. is a little bit cracked, please see all pictures before bidding.