- Opal Mine, The
 - Includes searchable online catalogue, encyclopedia, and graphical tour of the outback mines. - Opals International Jewelers
- Australian black opals and crystal opals; offered loose or set in custom gold jewellery with Tanzanite and Diamonds.
- Opal Auctions
- Auctions to buy and sell opal gemstones and jewellery.
- Opal-Trader.com
- Black and Australian opal jewellery specialists stocking loose stones, parcels, fossils, and rough opal.
- Opal Oasis
- Offers loose Australian opals and jewellery.
- Gold Rush Jewelry, Bead, and Art Company
- Selection of Australian, Mexican, Nevada, and Boulder rough and cabochons. Also includes information, instructions, and art jewellery.
- Opalsmith, The
- Quality Australian rough and cut opals.
- Opals World Wide
- Includes black and boulder varieties.
- Coober Pedy Opals
- Offers opals, opal rough, cabochons, opal triplets, and more.
- Keith Rigby Opals
- Suppling Lightning Ridge opals, both roughs and rubs.
- Opalinda
- Community site for opals, jewelcrafters, and gem dealers including a gem and jewel finder.
- OpalConnections.com
- Sells jewellery, earrings, pendants, and rings. Specialising in fine opal inlay.
- Village Smithy Opals, The
- Provide rough and finished opals as well as cutting tips, and more.
- Aussie Opals Direct
- Offers custom jewellery designs.
- Aussie-Opal
- Offers unique jewellery at wholesale prices; we buy rough gem opal from the mine and do the work in-house.
- Firebird Gems
- Australian lightning ridge opal in cut stones, rough and rubs. Also offers other gemstones.
- Cody Opal
- Cutters, wholesalers, and retailers of Australian opal and opal jewellery.
- Altmann & Cherny
- Australian Opal boutiques with duty-free shopping.
- Precious Gems of Australia
- Offers earrings, rings, pendants, and loose stones.
- Harlequin Opals
- Opals and Australian opal jewellery.
- Evert Opals Australia
- Miners, cutters, and designers of all things opal.
- Rolfs Opals
- Explains the varieties and offers sales for dealers and enthusiasts.
- Stoned Opal
- Offers boulder, Koroit and Yowah matrix, and Cloisonne opals, picture stones, and unique collectables.
- Australian Opals Gem Shop
- Includes black, boulder matrix, and crystal opals for sale. Also offers general opal information.
- Idaho Opal Mines, Inc.
- OpalSite
- Unique investment-grade opals direct from Lightning Ridge, Australia.
- CertifieDiamonds, Inc.
- Specialising in diamonds and exotic coloured Gemstones. Also Australian opals.
- Jewels of the Desert, The
- Specialises in cut stones, in laid jewellery, and executive gifts.
- Olympic Opal
- Reeds Jewelers: Opals
- Offers a selection of opal rings, bracelets, necklaces, pendants, and more.
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