Opal Jewelry Blog — opal ring guide

The Ultimate Guide to Australian Opals: Black, Crystal, and Boulder

Posted by Mark Hileman on

The Ultimate Guide to Australian Opals: Black, Crystal, and Boulder

Discover the differences between black opal, crystal opal, and boulder opal in our complete guide to Australian opals. Learn which opal type is best for your jewelry—and why The Hileman Collection uses genuine Australian crystal opal in our handcrafted inlay rings and fine jewelry.

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