The unusual and lustrous beauty of an opal is something that no other stone in Australia can deliver. The opulent gemstone thrive in the Australian outback of harsh and dry condition. There are a lot of opal mines across Australia, among which four spots are the most popular. They are Coober Pedy, Andamooka, White Cliffs and The Lightning Ridge.
Not only the finest opals, but also the best cutters uphold the pride of Australia. The Australian opal jewellery determines the value of the stone through their colour play, brilliancy, body formation and the class. The shades of the unique stones range from black to white. The darker hues are more desirable and expensive than the lighter ones because the colour play can be observed more clearly on a dark background. Black opals are rare which makes them costlier and precious. The opals are appealing mainly because of their colour play. The more valuable a stone is, the more the colour it plays. The brilliant shades present within an opal are the result of diffraction of light through the different spheres of silica, of which the stones are made of. Light passing through a larger sphere may appear red, while through a smaller sphere may seem blue or green.
Opal is classified as a nebulous non-crystalline gem and the word opal is derived from the Greek word opallos which means optical change. Opals are formed from the deposition of liquid silica that comes from decayed vegetation and creatures. The hardness rating on Mohs scale shows an opal stone at 5.5 to 6.5 (diamonds are at 10). Thus, the stone must be kept away from oil and ultrasonic rays. They consist only 10 percent of water and when they are worn, they consume moisture from the environment to keep themselves hydrated.
Marvelous Opal Jewelery
Opals are themselves beautiful and they offer an extreme level of beautification if they are worn on white gold. Making any jewellery in this combination can make the piece look absolutely astounding. Before buying an opal, the most vital factors that you should consider are the type, colour, size and pattern of the stone. It is also important to select the white gold jewellery on which the stone will be embossed.
The process of purchasing an opal jewellery can be a whole lot easier if you go to a professional jewellery maker who would be able to provide you with the best thing within your budget.