opal flattriplet opal round Subgroups opal nameØtypeType of cutPUitem No.opal4.0 mmsyntheticCabochon round1488342opal5.0 mmsyntheticCabochon round1488343opal6.0 mmsyntheticCabochon round1488344opal7.0 mmsyntheticCabochon round1488345opal8.0 mmsyntheticCabochon round1488346opal10.0 mmsyntheticCabochon round1488348