7.75 carat Lightning Ridge black opal
 
Super bright blue fire from this Lightning Ridge black opal.  Cut oval with a flat dome this blue fire on the face of this opal is stunning.  Deep rich royal blue which is so sought after, looks like oil on water as it flows around the face.
 
Mine - Lightning Ridge
Body Tone - N1
Brightness - 5
Fire colour - Blue
Size - 24x16x3mm
Weight - 7.75
 
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.