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Questions about Opals
Which are the best opals?
Why are opals so expensive?
How are opals made?
How should I take care of opals?
Are opals rarer than dimonds?
How do opals and diamonds differ?
Why are opals related to bad luck?
How to synthesize opals?
Has anyone fossicked for Opals in Australia?
Why is mining for opals called noodling?
What are the best ways to clean opals?
How are opals formed?
How does OPALS work?
Where to find opals in washington state?
Where to find opals in oregon?