Source your Boulder opal slabs direct from opal miners and opal wholesalers and dealers for your single gem slab opal or parcel boulder slabs opals from Quilpie or Winton Australia and ready for you to polish .
Boulder opal is mined in Queensland Australia. It is formed as veins in ironstone.
Ironstone is the deep brown potch like stone that is very strong. Most popular opal mining towns are Quilpie and Winton and many old fields like Jundah or Hammonds mine still produce opal. Boulder opal mining is capital expensive with large bulldozers and excavators..D9 bulldozers are common and some fields now have D12s as these dozers sometimes have to level off mountain tops to get to the opal and need large strong rippers to break open the ground. the miner will slab out rough opal to expose colour. he uses heavy saw blades that rip through the rough as it is very tough .Slabs are generally polished on good lapidary equipment as it polished up good or slab can be cut into smaller opals depending on the grain or pattern of the opal
