Encyclopedia
Opalmine's encyclopedia of opal. Information from over 30 years of hands-on opal dealing, cutting and selling. From opal care to outback plants. Please remember we also have a well supported Opal Chat Forum for all questions about opal.
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Encyclopedia entries:
Introduction
Opal Colour
Solids, Doublets, Triplets
Picture guide to opals
Opal care
Opal shapes and settings
Rough opal advice
Buyer and lapidary hints and tips
Opal valuation
Where are the opal mines?
The miners terrain
At the mines
Opal miners, past and present
Animals and plants of the outback
Seasons in the outback
