Australian Queensland Boulder Matrix opal 68cts rub / rough / preform Koroit Blue veins of fires 38x26x6mm BFA27This is a nice big Boulder opal of the Queensland opal fields. From Koroit mining area , this is a opal in ironstone matrix Lots of nice veins of blue fires showing on exposed face Preformed so only needs a little work & a Polish lots potential here Please note boulder opal is ironstone host rock with deposits of opal in the veins Details: #BFA27 Weight: 68cts Grade: POTENTIAL GRADE Base Colour: Boulder tone Source: Queensland Australia Field: Koroit
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Australian Queensland Boulder Matrix opal 68cts rub / rough / preform Koroit Blue veins of fires 38x26x6mm BFA27