solid black opal ring- size: 8.5

* opal type: solid black crystal 
* gemstones: nil
* metal: solid 14ky gold
* colours: blue, green
* dimensions: 10.09 x 7.22 x 4.42mm
* origin: lightning ridge, NSW
* brightness: 7.5/10
* size: 8.5
* pattern: chaff, moss
* shape: oval