Tag Archives: opal

Rare Louisiana Sand Opal

Louisiana Sand Opal showing a range of colors. Louisiana Opal was found in the Catahoula Formation in Vernon Parish, Louisiana. The only commercial producer was the Hidden Fire Opal Mine which operated on leased land and was closed down in the early 1990’s. Only small quantities were mined and rough material, in quantity, is very […]

Boulder Opal

Queensland Boulder Opal is mined in the desert regions of the state of Queensland in Australia centered mainly around the towns of Winton and Quilpie. As is implied by the name the opal is found in or nodular or boulder ironstone formations, in vertical and horizontal cracks, which are cut open to see what gems […]

Opals

Opal comes in many different forms from countries throughout the world. Australia has been the biggest producer for many years and includes boulder opal from Queensland, black opal from Lightning Ridge, crystal and white opal from Coober Pedy and crystal and matrix opal from Andamooka. The mining town of Mentabie used to be a major […]