15.70 carat Lightning Ridge semi black opal​​​​​​
 
Large flat faced Opal from the Lightning Ridge fields, dark semi black base which shows a great metallic fire pattern of green, orange, blue with a chaff foil pattern within the broad flash. Very unique fire pattern which will make a stunning pendant.
 
Mine - Lightning Ridge - Australia
Body Tone - N6
Brightness - 5/5
Fire colour - Green, orange blue
Size - 34x14x5.7mm
Weight - 15.70 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.