The National Opal Collection is the (A?) leading supplier of Australian opals, including beautiful white, black and boulder opals, as well as exquisite opal jewellery. Our company, with over 50 years experience in the gem and jewellery trade, is recognized globally for our stunning Australian opals & beautifully-crafted jewellery.
https://www.nationalopal.com/opals/prec ... ation.html
I mean there are some lies about exclusiveness of precious bone replacements only from their neck of the woods or that glue is a glass property. I myself have gem opal Miocene fossils mined in Nevada, along with every shop here in their stores museums, and I've never seen a super gem cone that faintly compares to an American one in detail or brightness from anywhere down under, but its business (unlike my total honesty one that does not declare lack of cuttable opal from all competitors),
but still, it's a real pretty store any opalholic needs to check out.