onyx Subgroups onyx nameØtypeType of cutPUitem No.onyx6,0x4,0 mmreal, genuineCabochon ovale1488723onyx7,0x5,0 mmreal, genuineCabochon ovale1488724onyx8,0x6,0 mmreal, genuineCabochon ovale1488725onyx10,0x8,0 mmreal, genuineCabochon ovale1488727onyx12,0x10,0 mmreal, genuineCabochon ovale1488728