12,8 carat solid rare Mintabi gem Opal with brilliance 5 electric gold--green (also some turquise-golden) pattern-flash/colorplay (see video) best to view the colorplay in video.. Unique, one of kind opal. Video is a bit too dark. THIS IS NO DOUBLET OR TRIPLET!! Its a solid Natural Opal!! . Perfect Shape and Size for a pendant of for collectors