"Note: Fine Craftsmanship,Satisfaction Guaranteed,Opal is October's Birthstone Condition: 100% NEW Metal : Silver Plating over brass Main Stone: Australian Opal Main Color: as showing Ring Size(US): # 5 6 7 8 9 10 11 12 Quantity: 1PCS ABOUT Australian Opal : Before the Australian Opal was not found, the indigenous people living in the local will find some glittering beautiful stonesafter each debris flow . Natural Australian Opal mainly divided into three categories, black Opal ,white Opal , and fire Australia Opal . black Opal is the most precious . This gem which has a strange color were precious as early as the ancient Greece and the Roman, in the mythology it is Zeus's tears ; in the wild history it is embedded in the ring Anthony gave to Egyptian Queen Cleopatra. However, after people found mineral deposits in Australia until the end of the 19th century , the Australian Opal 's glorious time really kicked off. Australia is currently supplying 95% of the Australian opal market on the international market, the world's more than 80% of Australia opal are from Australia's South Australia, the most expensive black Australian opal are from New South Wales lightning area. In 1993, the Australian government set Australia Opal as ""national stone"", so that this ancient world gem has become a symbol of a young country symbol. Australian opal is a very personalized gem, each one is different, with a high collection value. Australian Opal has the appearance of light and brilliant, in Australia, Opal is a symbol of luck, is a symbol of nobility. Ancient Roman called ""Cupid"" son, is a beautiful angel in love, representing hope and purity. Asians see it as a symbol of loyalty to the spirit of the sacred gem. Most Americans like red, orange opal, the Japanese generally love blue and green opal, the Chinese people like the festive warm red opal. Opal is a symbol of honor and identity, in the International gemstone industry, the Opal is named ""October birth stone"", is the hope and lucky stone."