17ct 29.8c18x3.3mm Fine Rare Black Australian Boulder Opal Oval Cabochon Gem | eBay,ボルダーオパール オーストラリア産 3.50ct【241107-2677】 – ASUNARO STONE,17ct 29.8c18x3.3mm Fine Rare Black Australian Boulder Opal Oval Cabochon Gem | eBay,6.8ct 16.6x13.5x4mm Crystal Pipe Australian Boulder Opal Cabochon Gem,17ct 29.8c18x3.3mm Fine Rare Black Australian Boulder Opal Oval Cabochon Gem | eBay,