Boulder opal is found in Queensland Australia. It is formed by opal seams in a host stone, usually ironstone. Thin veins of opal is formed when rain deposits silica in gaps of in the iron stone. The silica then is compressed and slowly becomes precious opal. This piece is a nice, relatively large boulder opal specimen which clearly shows how the opal formed. Check out our Instagram page to see a video of it.
Kindly note that while we take every effort to photograph each photo with the intention of them being as colour accurate as possible, we are unable to control how they will appear on different screens. As stones are natural, there may be some imperfections in them. We have done our best to photograph any imperfections so that you can make an informed decision as well. Should you wish for additional photos, videos or more information about any piece, please do not hesitate to contact us.