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Length: 3 hours
Instructor: Ted Irwin
Examine the various varieties of precious and common
opal and use the new standards adapted by the Australian
Gemstone Industry Council for their classification. From
common to fine black, boulder and fire opal, you will
examine specimens from the famous Australian mines to
more local sources and the components that go into their
pricing.
Synthetic opal, assembled doublets, and triplets will
also be examined.
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