BERYL. Triple Chance Mine, Olary, South Australia. 12x18x38mm (G63)
This tumbled piece of beryl was from a large crystal of yellow beryl that had areas of gemmy aquamarine with inclusions of hematite and ilmenite. A rainbow chatoyant effect can be seen on turning this stone - sometimes called "sunstone aquamarine".
12mm x 18mm x 38mm