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Queensland Boulder opal 13cts rub / rough / preform Koroit Blue & Green fires 22x14x4mm BRA05

Queensland Boulder opal 13cts rub / rough / preform Koroit Blue & Green fires 22x14x4mm BRA05

£11.50 GBP
£11.50 GBP
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This is a Boulder opal of the Queensland opal fields.
From Koroit mining area , this is a opal in ironstone matrix
Some Bits of blue Green 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.

  • Details: #BRA05
  • Weight: 13cts
  • Grade: POTENTIAL GRADE
  • Base Colour:  Boulder tone
  • Source: Queensland Australia
  • Field:  Koroit
  • Size: 22x14x4mm
  • Type:   Koroit Boulder rough
  • Colours: blue Green colours
  • State : In the Rough rubbed and preformed
  • Solid, Natural, Untreated Opal, Ironstone Host rock
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