6.50 carat Koroit Boulder opal
Stunning Koroit boulder opal with a lightning green and blue fire pattern. Cut round 12mm
- Mine - Koroit Boulder
- Body Tone - Iron Stone
- Brightness - 5/5
- Fire colour - Green and blue
- Size - 12x12x4.5mm
- Weight - 6.50 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.