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24/05/2019 06:39 pm

37.85Ct Queensland Boulder Opal Stone

Artikelnummer
Abmessungen (mm)
40.000 x 19.000 x 6.000mm
Gewicht (cts)
37.850
Typ
Cabochon
Farben

CONSTABLE & CO

AUSTRALIAN OPAL SPECIALIST

Opal Type

 Boulder Opal

Origin

 Quilpie Region

Weight:

37.85ct

Size:

40 x 19mm

Body tone:

 

Brightness

 

Treated/Untreated

Untreated Natural

Colour

Deep Blue/Purple

Pattern

Broad mixed flashes and bar flashes

Accuracy of picture

Less Bright

Base of opal

Solid Native Ironstone

Cabochon

Low Carved

Comments:

A Large free form shape Queensland boulder opal stone with mixed Bright blue/purple broad and bar flashes across the stone

Opal valuation: 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

 

Photographing opals: 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.

 

Our Guarantee:  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 as I am happy for you to return it for a full refund or another arrangement.

About Colonial Opal The company origins 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

 

Lightning Ridge Opal: 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. Black and dark opal is the scarcest of all opal and comes from the mines of Lightning Ridge.

Queensland Boulder Opal: Mined in the Outback of Queensland Australia our Opal comes from and variety of mining districts including - Winton, Koroit, Yowah, Eromanga, Jundah and Quilpie

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. White Opal is capable of displaying any combination of spectral colours such as red, blue, purple and greens.

 

The major difference between this type of Opal and the Black Opal is that white Opal tends to have a subdued play of colour since the body colour of the stone is light. In black Opal because the body is very dark the play of colour is much brighter.

 

In terms of production the white Opal is by far the most plentiful. 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

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constableandcoopal
constableandcoopal
Constable and Co- Australian Opal specialists in the Opal and Gem industry since 1980s
:Stadt Land
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$17.00 :Tage zählen über Standard Shipping - Tracked
Schiffe von:
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Überblick

Auflistungstyp : Standard
Produkt ID : 692173
Beginnt : 24th May 2019 03:10 pm PDT
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