Gorgeous large piece of famous Australian Boulder Opal From Queensland Australia 100% natural untreated Cut & polished by myself Has beautiful colours & markings on both sides This beautiful cabochon is ready to be made into a pendant or simply for the collectors. Very fine example of famous australian Boulder opal They say boulder opal enhances mental clarity & physical well-being. My favourite type of Opal I like to work with Dimensions are: 61 x 26 x 7 mm Weight: 105.6 cts Photos were taken with a Samsung galaxy phone in natural daylight. Not enhanced or photoshoped This Cabochon will be sent via registered mail with a tracking number Feel free to contact me if you have any questions Thank you Hisham Boulder Opal, Yowah Nut, Cabochon, Cab, Australian Matrix Koroit Opal