Precious Opal from Yilgarn Craton, Western Australia, Australia
Australia | |
| Fetherston, J.M., Stocklmayer, S.M., Stocklmayer, V.C. (2012) Gemstones of Western Australia. Mineral Resources Bulletin 25. Geological Survey of Western Australia |
| Fetherston, J., Stocklmayer, S., Stocklmayer, V.(2013): Gemstones of Western Australia, Geological Survey of Western Australia |
Williams Opal Mine, Coolgardie, Coolgardie Shire, Western Australia, Australia