2.15 carat Olympic Rub Opal - EO-423
 
Bright long oval rub from the Olympic mines, awesome rolling flash over the face of greens, reds and blue.  Best viewed from one direction.
 
Rubs need finishing, this is your chance to make the opal excatly how you want it.
 
Source - Olympic
Size - 17x7x3mm
Weight - 2.15 crts
Base Tone - N8
Fire Colour - Red Blue Green
Brightness - 4/5
 
Price is for the stone pictured
 
About Opals from around the world - 
 
Treatment: Natural
Colours Opal Can Be: 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.