4.6 carat Mintabie doublet opal​​​​​​
 
Super bright doublet opal made from Mintabie crystal opal on black opal backing.
Lovely bright broad flashes of yellow, green, blue and orange.
 
Mine - Minatbie - Australia
Body Tone - N1 black opal with crystal top
Brightness - 4.5
Fire colour - Mixed
Size - 15x8.5x5.5mm
Weight - 4.60 carat
 
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.