Opal
90% of opals come from Australia, and indigenous tribes describe his entanglement in their myths. Other opals can come from Mexico, mainly fire opal, Brazil and some US states, as well as African Madagascar.
Essential for those who own opal or are about to buy it. Since opals contain a large percentage of water compared to other precious stones, it is not right to expose it to excessive dryness and heat ... more about the opal stone