Opal
Opal,
one of the most precious stones has many varieties, as well as color variations. We know the expensive white and dark opal, boulder opal, matrix opal, fire opal, opal Andean opal or dendritic. Most types of opal comes from one continent and that is Australia, formerly the opals found in the Czech Republic and Slovak. Most opals due to its fragility processes only the beautiful opal jewelry.