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the organic molecules are replaced by silica
A very unusual and bright sea green boulder opal
We don't get these very often
5 mm drilled hole through its side
A lovely boulder opal from our inexpensive range
2.78 Ct half-circle crystal opal Type_BoulderShell the organic molecules are replacedA beautiful crystal opal, with light orange, green and blue colours.
US$ 138130.23
US$ 66.00
US$ 69.90
US$ 69.90
US$ 19.90
US$ 25.00
US$ 190549.52
