Australia’s Great Artesian Basin (GSB) hosts widespread deposits of Opal, and continue to be the major source of high-quality gem opal for the international coloured gemstone market. Opal mining in the GAB has produce billions of dollars’ worth of exquisite gems, including light opal mainly found in the opal fields of South Australia, Boulder Opal…
Opal Black Opal, Boulder Opal and White Opal deposits in Australia Australia’s Great Artesian Basin (GAB) hosts widespread deposits of Opal, and continue to be the major source of high-quality gem opal for the international coloured gemstone market. Opal mining in the GAB has produce billions of dollars’ worth of exquisite gems, including light opal…
A pearl is the gem produced by oysters in saltwater, or a freshwater mollusc. In either case, a small foreign into the shell, and then into the tissue of the mollusc. If the intruder becomes trapped, and the oyster can’t rid itself of it, the foreign body become an “irritant”/ To ease the discomfort this…