Opal is a phenomenal gemstone, it comes in a few opaque colours, such as pink, blue, grey and green, it also comes in transparent white and black with pin fire of all colours of the rainbow.
Australian boulder Opal is opal within a host rock of ironstone dark brown in colour,with a great play of pin fire. Perfect for rings as it is protected by the ironstone, all other opals are only 5.5 – 6.5 on the Mohs scale of hardness.
Ethiopian Opal is new to the gemstone market, it was only found in the early 1990’s, white pink or brown opals with great pin fire of all colours, it is my favourite opal.
Fire Opal comes in the most beautiful colours reds, yellows and orange. Transparent to opaque this gemstone has a radiant glow.