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20.60 carat Allens Rise free form opal blue and green fire​​​​​​


Large flat faced Allens Rise opal with light body tone, face shows a green and blue broad flash fire pattern. Hints of yellow as well.


  • Mine - Allens Rise - Australia
  • Body Tone - N7
  • Brightness - 4/5
  • Fire colour - Green Blue
  • Size - 25x19.8x5.2mm
  • Weight - 20.60 carats


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 dimensions 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. 


20.60 carat Allens Rise free form opal blue and green fire

SKU: Opl073
£695.00 Regular Price
£625.50Sale Price
Only 1 left in stock
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