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Queensland Boulder opal 21cts rub / rough / preform Koroit Blue fires 17x10x4mm BR#03

Queensland Boulder opal 21cts rub / rough / preform Koroit Blue fires 17x10x4mm BR#03

£12.00 GBP
£12.00 GBP
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This is a nice Boulder opal of the Queensland opal fields.
From Koroit mining area , this is a opal in ironstone matrix
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.

  • Details: #BR#03
  • Weight: 21cts
  • Grade: POTENTIAL GRADE
  • Base Colour:  Boulder tone
  • Source: Queensland Australia
  • Field:  Koroit
  • Size: 17x10x4mm
  • Type:   Koroit Boulder rough
  • Colours: blue colours to veins
  • State : In the Rough rubbed and preformed
  • Solid, Natural, Untreated Opal, Ironstone Host rock
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