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Where Does Opal Come From?

More than 95% of the world's high-quality color opals are produced in Australia, but Australia's Opal, after more than one hundred years of exploitation, resource reserves are not clear. In addition, Mexico has produced varieties with orange body colour, no colour change or with a small amount of colour change known as “Fire Opal”, and a colourless or orange body colour, which is very bright in high quality. The output is also very rare.
Other Opal mineral resources are scattered, and the ore fields and reserves cannot be ascertained by modern scientific methods. Instead, they can only be detected through traditional well digging. Australia has a vast inland area. This detection method is no different from a needle in a haystack, and exploration and mining costs are quite high.
For these reasons, the price of Opal has never been cheaper than in the 1980s and 1990s. In the international market, the price of a one-carat premium black opal starts at 450 US dollars per carat, and that of 10 carats or more is as high as 7,500 US carats. Above, in the 1980s, the price of Opal was absolutely astronomical for us. This is also the biggest reason why quality gem grade Opal has not been missed by the Chinese mainland market.
For more information purchasing Australian Opal contact Expression Jewellery 
Further details on Australian Opals see
https://www.gemsociety.org/article/opal-jewelry-and-gemstone-information/


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