Allens Rise dark crystal free form Opal  - EO-554
 
Free form Allens Rise dark base crystal Opal with a high dome, body of soft blue fire colour.
 
Mine - Allens Rise
Body Tone - N6
Brightness - 3.5/5
Fire colour - Blue
Size - 14x10x4.1mm
Weight - 3.30 carats
 
About Opals
 
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 dimension 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 safety on the water.
 
All orders are sent recorded delivery UK and International.