Australian Boulder Opal 21.24ct Queensland Natural Stone

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Constable & Co<br>Australian Opal<br>Opal Type<br>Australian Boulder Opal<br>Origin<br>Winton Region<br>Weight:<br>21.24ct<br>Size:<br>34 x 16mm<br>Body tone:<br>Brightness<br>Treated/Untreated<br>Untreated Natural<br>Colour<br>Multi Colour<br>Pattern<br>Bright Mixed Flashes<br>Accuracy of picture<br>Accurate<br>Base of opal<br>Native Ironstone<br>Cabochon<br>Medium<br>Comments:<br>A free form shape Australian Boulder Opal Stone, with bright mixed<br>flashes<br>of multi-colour turquoise, green, red, pink, orange and blue,<br>on a native ironstone base.<br>video request @ www.constableandco.com.au<br>Postage and packaging:<br>All items come individually packed in a pouch or display box and are securely packaged in a padded bag we offer.<br>Postage rates as set out below unless otherwise stated.<br>Domestic postage - Australia Economy Post (3 to 7 days) or Australia Registered Post  (3 to 7 Days) Australia Express Post  (2 to 3 Days)<br>Worldwide Postage - Australia International Economy Post (7 to 21 Days) or Australia International Registered Post with tracking (7 to 14 Days) or Australia Post International Express  (3 to 7 Days)<br>Combine postage - same postage cost regardless of the number of items<br>Opal valuation:<br>Our Opal Valuations are a combination of experience gathered over 35+ years in all levels and operations within the opal industry and the internationally recognized Opal Nomenclature and Classification<br>Opal<br>Photographs:<br>We endeavour at all times to take the most true to life pictures possible. However, cameras often pick up colours and light differently and variations may occur. Because every opal photographs differently, I also include in the description additional comments about the accuracy of the photos.<br>Our Guarantee:<br>We sell quality opal and customer satisfaction is important to us so for any reason you are not completely happy with your purchase in any way whatsoever please contact us before leaving feedback.<br>About Constable & Co Australian Opal Specialists<br>The company origins as Colonial Opal in trading Opal, Pearl and Precious Gems date from the early 1980s experience gathered in all levels and operations within the Opal Industry starting in the Wholesale and Export Gemstone and Jewellery trade within Australia and Internationally then Owning and Operating Opal Specialist Stores in Australia and New Zealand all the while being involved in the Mining, Cutting and Valuing all varieties of Australian Opal and recently with Sons and Daughter joining the company ensuring a continued expertise in the industry.<br>Lightning Ridge Opal:<br>Mined in the Outback of New South Wales Australia Black Opal comes from and variety of mining areas around Lightning Ridge<br>Black Opal refers to the underlying colour – the colour of the opal when you turn it over. The darker the body the more valuable to stone may be. It is this darkness that lends brightness to the other colours displayed with in the stone. Black and dark opal is the scarcest of all opal and comes from the mines of Lightning Ridge.<br>Queensland Boulder Opal:<br>Mined in the Outback of Queensland Australia our Opal comes from and variety of mining districts including - Winton, Koroit, Yowah, Eromanga, Jundah and Quilpie<br>Boulder opal is a type of opal that forms within the cavities of ironstone boulders dating from the time when central Queensland was cover by an inland sea The Opal is found in both vertical and horizontal cracks or seams. It is cut with the ironstone remaining on the back and is classified as solid opal.<br>Boulder Opal occurs over a Vast area of Western Queensland from North of Winton to south of Quilpie. Boulder Opal is considered to be one of the most versatile opals because it has all of the colour and patterns of expensive black or crystals opals but it is contained within the iron stone which makes it extremely durable.<br>When looked at from the side you can always tell a genuine solid boulder opal by the natural uneven line where the opal filled the void in the boulder.<br>White Opal<br>:<br>is also known as milky Opal and it has a pale white appearance with bright flashes of Opal colour. On the body tone and bri