Opal is the Birthstone for October. Opal is different to other gemstones due to the fact you are unable to facet the stones like others, with the exception of Fire Opal. This is due to the water content, an Opal will still contain an element of water and therefore it’s advisable to keep them away from a direct source of heat as they are heat sensitive. Opal is available in a range of colours, when we use the colour term, this is the main background colour and then you have the rainbow of colours over the top. The main colours available are white, black and blue. There is Fire Opal which is different to the other Opals; this is because it’s one colour, which is fiery orange. The stone is faceted and cut in the same way as a diamond. Opal has a hardness of around 6 on the Mohs scale due their water content. Opals are mined and sourced from all around the world, however Australia is well know to provide a large amount of Opals.