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Opals World Wide
includes black and boulder varieties.
http://www.opalsworldwide.com.au/
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OpalSite
unique investment-grade opals direct from Lightning Ridge, Australia.
http://www.opalsite.com/
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Rolfs Opals
explains the varieties and offers sales for dealers and enthusiasts.
http://www.rolfs-opals.com.au/
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Stoned Opal
offers boulder, Koroit and Yowah matrix, and Cloisonne opals, picture stones, and unique collectables.
http://www.stonedopal.com/
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The Opal Mine,
includes searchable online catalogue, encyclopedia, and graphical tour of the outback mines.
http://www.opalmine.com/
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The Opalsmith
quality Australian rough and cut opals.
http://www.opalsmith.com/
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Village Smithy Opals, The
provide rough and finished opals as well as cutting tips, and more.
http://www.villagesmithyopals.com/
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