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Australian Queensland Boulder Matrix opal Polished Gemstone 22cts From Koroit 28x15x4.5mm BFC28

Australian Queensland Boulder Matrix opal Polished Gemstone 22cts From Koroit 28x15x4.5mm BFC28

£30.00 GBP
£30.00 GBP
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This is a Boulder Matrix opal Gemstone of the Queensland opal fields.
From the Koroit mining area of Queensland 
this is a Ironstone matrix with opal in the pores holes and veins of host rock
with some blue colours
Top polish ready for setting
  • Details: # BFC28
  • Weight:  22cts
  • Grade: BELOW COMMERICAL  
  • Base Colour:  Boulder tone
  • Source: Queensland Australia
  • Field:  Koroit 
  • Size:  28x15x4.5mm
  • Colours:  bit blue
  • Shape: Freeform
  • Solid, Natural, Untreated Opal, Ironstone Host rock
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