Queensland Boulder Opal 7.74ct Loose Australian Natural Stone
Very bright to Gem Red Orange Blue Green Multi Colour. Very Bright Mixed Bar flashes.
A free form shape Queensland boulder opal with very bright to gem. Flashes of predominantly red orange blue green on a carved face on solid native. All items come individually packed in a pouch or display box and are securely packaged in a padded bag we offer. (Prices quoted in Australian Dollars).
Because every opal photographs differently, I also include in the description additional comments about the accuracy of the photos. About Constable & Co Australian Opal Specialists 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.
Mined in the Outback of New South Wales Australia Black Opal comes from and variety of mining areas around Lightning Ridge. 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.
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. 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. 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. White Opal : is also known as milky Opal and it has a pale white appearance with bright flashes of Opal colour. On the body tone and brightness chart the body colour of white Opal is N8 or N9.
In Australia the majority of the opal produced comes from South Australia. There are three main South Australian opal mining fields these are Coober Pedy, Andamooka and Mintabie. The item "Queensland Boulder Opal 7.74ct Loose Australian Natural Stone" is in sale since Thursday, April 26, 2018. This item is in the category "Jewellery & Watches\Loose Diamonds & Gemstones\Loose Gemstones\Opal\Boulder Opals". The seller is "cssp2000" and is located in Brisbane. This item can be shipped worldwide.
- Natural/Lab-Created: Natural
- Shape: Free form
- Length: 14mm
- Width: 12mm
- Depth: 4mm
- Total Carat Weight (TCW): 7.74ct
- Treatment: None (No Enhancement)
- Country of Origin: Australia
- Colour: Multi-Colour
- MPN: 200462