was the key to their success. Why?.
Opal Matrix
ome opals have a banded growth of precious opal with matrix rock, and there can also be inclusions of matrix within the
Pearls produced by snails
pearls can form in sea snails and are extremely rare
Faceted Round Cuts
There are two main categories of faceted stones: round shapes and straight-sided shapes.
Fire Opal
The colour of fire opal can range from yellow to red, with orange to red the most usual and red the most desirable.
Boulder Opal
Boulder opal is precious opal that has a sandstone or ironstone base.
Iolite (cordierite or dichroite)
What most people don't realize is that top-quality iolite rivals the best tanzanite in both colour and saturation. If
Andean opal
Andean opal has become very popular because of its bright turquoise colour.