Ethiopian opal, are some of the most translucent stones. Silica is basically glass made from nature which creates colors
|Hardness||Country of origin||Size and shape||Price|
|7 1/2||Brazil||5 carats to 15 carats range, irregular shapes, no calibrations||$2 to $8|
Tourmaline crystals with pink center and a green rim, or vice versa, are called watermelon tourmaline, these are product of Brazil.
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