4.75 carat Andamooka black Opal
 
Old stock Andamooka black opal, this is the real deal of the acid and sugar treated opal from that region.
Stunning green, blue and orange fire and a fraction of the cost if you wanted to match a Lightning Ridge black opal.  One set its hard to tell the difference.
 
Mine - Andamooka
Body Tone - N1 acid and sugar treated
Brightness - 5
Fire colour - Green Blue Orange
Size - 22x13x2.2mm
Weight - 4.75 carats
 
Price is for the stone pictured
 
About Opals
 
Treatment: Acid and sugar
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.
 
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.