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160 CTS POTCH WITH AMAZING PATTERNS-FOR PICTURE STONES CUTRM

1513
2

Artikelnummer
BZ1474
Abmessungen (mm)
85.000 x 45.000 x 6.000mm
Gewicht (cts)
160.000
Typ
Rough
Farben

This is a natural opal rough slabs from Lightning ridge Australia.it show some amazing formations in the potch . They will cut interesting picture stones.

photo taken with the rough wet.

Read this interesting article on one of these specimens done by  Dr Simon pecover (BA Earth Science, MSc & PhD)* Research Gemmologist and Geoscientist .

What an amazing opal-layered-folded structure is displayed by this specimen.

Lately I have been doing more research on these types of structures in
Australian opal, as they closely resemble "Kelvin-Helmholtz" instability
billows and folds, which can be formed in highly viscous fluids subjected to
shear instability conditions; especially when such conditions are imposed on
density stratified viscous non-Newtonian fluids subjected to seismic shaking
(something that would be expected to have occurred in a
tectonically-generated fault-controlled opal-vein-forming environment).

Such structures are known to form in layered fluids displaying density
gradients, particularly where less dense fluid layers sit on top of denser
fluid layers. When these layers are subjected to shear flow, instability
arises because of the density contrasts; with orientation preserved through
continuous folding, thereby defining the direction of turbulent flow.

Importantly, understanding the shear-strain environment of GAB opal deposit
formation provides important exploration clues as to where opal deposits may
have been concentrated in the host sedimentary rocks of this extraordinarily
unique gem-opal-rich geological basin.

 it is a important piece which demonstrates the vigorous shear-dominated
hydrodynamic and rheological environment under which the opal vein deposits
of Lightning Ridge were likely formed.

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Australia
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Rest der Welt
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sedaopals
Discover the magic of opals at SedaOpals, where every stone tells a unique story. Paul Sedawie, the heart and soul of SedaOpals, began his journey with a humble piece of boulder rough at 14, sparking a lifelong passion for these mesmerizing gemstones. With over 40 years in the opal industry, Paul’s dedication has taken him from the rugged landscapes of Lightning Ridge to prestigious gem shows around the world. Paul, a former president of the Opal Association and an author of several opal books, shares his vast knowledge and passion with enthusiasts globally. He’s even made the largest donation of opalized fossils and curiosities to the Australian Opal Centre at Lightning Ridge. At SedaOpals, Paul and his sons offer a meticulously curated collection of opals, each handpicked for its exceptional beauty and character. Whether you’re a seasoned collector or new to the world of opals, you’ll find a stunning array of black opals, boulder opals, and crystal opals to explore. Join us in celebrating the timeless beauty and craftsmanship of opals. Welcome to SedaOpals, where every opal is a piece of art.
Mermaid Beach , Australia
Verifiziert
44304 Feedback

  • pompey27
    pompey27
    Positiv

    And to this stone is good

  • pompey27
    pompey27
    Positiv

    Very good, good choice, thanks

  • pompey27
    pompey27
    Positiv

    Happy Christmas, good stone thank you!

5%
Gutscheincode SEDADEALS
Gültig bis
2nd Jan 2025

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Versanddetails

Versand:
$16.00 21 über Registered Shipping
Schiffe von:
Australia

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Dieser Verkäufer fügt den Transaktionen in Australia 10.00% tax hinzu.

Überblick

Auflistungstyp : Standard
Produkt ID : 1208755
Beginnt : 19th December 2024 03:43 pm PST
* Alle Preise sind in USD