Precious gems and minerals.......a specialty of the American SI...........

Underground in Coober Pedy - Australia's Opal Capital

www.outback-australia-travel-secrets.com/coober-pedy-australia.html

 

Living underground and mining opals: a much. ... Coober Pedy is located half way between Adelaide and Alice Springs and there is not much in between. ... Coober Pedy is called - no, Coober Pedy is - the opal capital of the world.

Coober Pedy - Wikipedia, the free encyclopedia

https://en.wikipedia.org/wiki/Coober_Pedy

 

Coober Pedy is a town in northern South Australia, 846 kilometres north of ... Coober Pedy today relies as much on tourism as the opal mining industry to  ...

Opal Mining: A Damn Good Way to Get Yourself Killed - Io9

io9.com/5976051/opal-mining-a-damn-good-way-to-get-yourself-killed

 

Jan 25, 2013 - Opal-mining is one of the world's most harrowing pursuits, but ... The earth beneath Australia provides nearly 100% of the world's opal supply.