Loose Boulder Opal Stones For Sale

Boulder opal is in many cases the most undervalue opal available. They are generally very large and have some beautiful play of color. Boulder opal is opal that has formed either on top on inside a matrix of sandstone. This sandstone is very porous and so opal can enter into cracks and solidify. Boulder opal mainly comes from the Queensland region of Australia.

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$30.00 $24.00
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