Australian opal is a renowned gemstone known for its stunning play-of-colour and has been used in jewelry for centuries. If you are interested in Australian opal jewelry, here’s what you should know: Types of Australian Opal: Black Opal: This is the most valuable and sought-after opal. It has a dark body colour, usually black or…
Australia is synonymous with opal, producing approximately 95% of the world’s precious opal. Revered for its mesmerizing play-of-colour, the Australian opal boasts a spectrum of colours, ranging from deep blues and greens to fiery reds and yellows, all depending on the stone’s composition, structure, and the angle of observation. Types of Australian Opals: Black Opal:…
The radiant world of gemstones boasts a myriad of splendid treasures, yet few can rival the sheer elegance and uniqueness of the Australian opal. Characterized by a spectrum of vibrant hues dancing together in harmony, the Australian opal stands as a testament to the dazzling beauty that Mother Nature can conceive. Australia is home to…
The major outcrops of opal an ancient inland sea (known as the Eromanga Sea). The important mining areas in Australian opal production over the last century have been White Cliffs, the Queensland fields, Lightning Ridge, Grawin, Glengarry, Coober Pedy, Andamooka, Mintabie and Lambina. White Cliffs Commercial mining commenced in the late 1880s at the White…
Precious Opal is composed of minute uniform spheres of silica, which are arranged together in orderly three-dimensional grid. The spaces between these spheres contain silica in solution. However, in common opal, where there is no play of colour the spheres are varying sizes and are not uniformly stacked. White light passes through the transparent sphere…
Highly recommend Cosmopolitan Jewellers. I purchased several pieces of opal and pearl jewelry from overseas using the internet and email to view and select the jewelry. Jenny has been extremely helpful with videos and prompt response to all my questions. The transaction and shipment went smoothly. The jewelry is the highest quality and exceeded my…
Opal is a hydrous silica composed of predominantly silicon dioxide and water. The chemical composition of opal Is normally described by the general formula SiO,.nH,O. The formula indicates that opal contains water and the value of ‘n’ is variable so the water content is variable and is known to range widely. Such a simple formula…
Australian Opal is found in sedimentary rocks aged 115-100 million years. The majority of Opal is quite hard and will scratch glass. However, there are a few areas that some fields that produce unstable material with a higher water content, which can crack or craze. It is important to buy your opal from reputable jewellers…
A pearl is the gem produced by oysters in saltwater, or a freshwater mollusc. In either case, a small foreign into the shell, and then into the tissue of the mollusc. If the intruder becomes trapped, and the oyster can’t rid itself of it, the foreign body become an “irritant”/ To ease the discomfort this…
Cosmopolitan Jewellers is situated in the heart of the historic Rocks precinct of Sydney on the site of the first European settlement in Australia. Our spacious, modern and luxurious show room is located at 140 George Street under the Museum of Contemporary Art. This Art Deco inspired building is located on one of the most…