Product Code : 5604 Stone Name : Sparkling Fire Opal Gemstone Shape : Oval Size : L-17 x B-11 x H-2 MM Weight : 2 Carats
As an affordable alternative to larger sized solid opals, mosaic opal triplets provide an affordable, and stylish, substitute. They are created by assembling a montage of small, thin opal slices and adhering them to a solid base material, which may be natural or man-made. The base material, often dark in color, provides a dramatic backdrop to the overall appearance of the triplet.
Opal is a non-crystalline substance quite unlike other gemstones. It is composed of hardened silica gel which occurs naturally, as well as being a widely used man-made product used in many household cleaning products. Many people consider Opals to be unlucky but personally I think this has more to do with their fragility than anything else. Opals contain between 5 and 10% water which means that they are prone to drying out and eventual cracking so they must be treated extremely carefully. They are also very soft, measuring only a 6 on Mohs scale of hardness which makes them unsuitable for certain types of jewellery.
Problems aside, Opals are the most fascinating and revered of stones due to their unparalleled flashes of rainbow colour which are quite unique. There are basically two types of opal: Precious Opal which displays the iridescent flashes of colour, and Common or ‘Potch’ Opal which is often opaque and has no iridescence. Obviously the more effective the diffraction, the brighter the play of colours will be thus, the more desirable and valuable the stone, so that is the most important element to focus on when choosing an opal. This amazing effect is created due to the internal structure of the stone which forms as a series of spherical silica particles. In simple terms, it’s the way these particles align which causes light to behave in the way it does causing the most beautiful diffraction of rainbow colours.