21.70 carat Allens Rise semi black opal
 
Large flat faced Allens Rise Opal with a mixed fire pattern. Harlequin to broad flash fire of green and blue with hints of orange.
Set as a pendant for best colour and pattern.
 
Mine - Allens Rise
Body Tone - N6
Brightness - 4.5
Fire colour - Green Blue Orange
Size - 28x18x5.7mm
Weight - 21.70 carats
 
Price is per stone
 
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
 
Properties:
 
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.