rough parcel of chunky grey base - 147 cts

* opal type: rough
* metal: nil
* colours: blue, green
* largest: 33.63 x 29.76 x 9.69 mm
* smallest : 27.23 x 29.04 x 10.83 mm
* origin: coober pedy, SA
* brightness: 8/10
* pattern: floral, chaff
* shape: rough