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5.45 carat Mintabie free form crystal opal


Lovely medium domed free form crystal opal from the famous Mintabie field mines, body if full of green, blue, red and yellow fire. 


  • Mine - Mintabie, Coober Pedy Australia
  • Body Tone - crystal
  • Brightness - 5/5
  • Fire colour - mixed
  • Size - 16x15x4.3mm
  • Weight - 5.45 carat


Price is for the stone pictured


About Opals


Treatment: Natural

Color: Black, White, Blue, Green, Red, Yellow, Pink, Grey, Purple, Orange, Brown

Luster: Pearly, Vitreous, Opalescence

Birthstone zodiac sign: Libra

Associated month: October

Crystal system: Amorphous solid

Chemical formula: SiO₂·nH₂O

Hardness (Mohs hardness scale): 5.5 – 6.5

Country of origin: Australia, Ethiopia, Mexico and Cornwall amazingly 

Size variations: can vary 0.3mm each way on all dimentions given




In mystical circles, opal is considered a stone representing hope, innocence and purity. It has strong connotations of happiness, faithfulness, loyalty and confidence.  Regarded as a powerful sea stone for safty on the water.


All orders are sent recorded delivery UK and International. 


5.45 carat Mintabie free form crystal opal

SKU: Opl013
£585.00 Regular Price
£526.50Sale Price
Only 1 left in stock
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