16.46 Ct HYDROPHANE OPAL: Framed with diamonds in an 18K white gold setting. The opal is cabochon cut with a red/orange, blue/green play of color in a rolling flash fire pattern. Size 6.5. Weight 9.1 grams. Sold with current Florida Diamond Appraisers GIA graduates appraisal for the opal alone for $1,200.