With almost no source besides the Australian Lightning Ridge mines for black opal sourcing, the price points of natural black opals is way too high for wholesale opal jewelry requirements. You now have an affordable option for wholesale silver black opal gemstone jewelry in the form of, Ethiopian black opals. These gems from the African nation are natural but, undergo a special treatment to give them a dark black color. With the price of Ethiopian opals being modest, the production of silver rings with black opal has become more feasible. U-creations offers jewelry production services at it's Thai jewelry factory. Get more details on your opal gemstone options here http://www.jewelcreate.com/silver-opal-rings-jewelry-ct-0502.php