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$2,200.00 USD
PVP estimado $4,499.98
7731
24

4280.00 CTS POLISHED OPAL SPECIMEN FROM LIGHTNING RIDGE [LRO919]

SKU
Dimensiones (mm)
146.000 x 105.000 x 46.700mm
Peso (cts)
4280.000
Body Tone
N3
Tipo
Specimen
Colores

This is a natural opal specimen from Lightning ridge Australia.it show some amazing formations in the potch area
Size and weight are approximate.
The colour area has been well polished.
Read this interesting article on this specimen 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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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.
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Verificado
43710 de comentarios

  • laurenlambert
    laurenlambert
    Positivo

    The stone was more beautiful in person than in the photos. It arrived very quickly. I would definitely recommend this seller and would buy from him again.

  • fissure
    fissure
    Positivo

    Always a pleasure to deal with you! Thanks for fast shipping :)

  • gbesch
    gbesch
    Positivo

    Absolutely stunning multi-colored fire skitters across the surface as if the stone were alive. One of the most beautiful pieces of boulder opal I've ever purchased. Extremely pleased! Thanks!!!

5%
Código promocional SEDADEALS
Válido hasta
7th Nov 2024

Auditoría

Este producto ha sido auditado por un :título y han encontrado lo siguiente:
  • Descripción Precisa
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Comments

The Verified Seller has provided accurate and complete information for this Opal including weight, dimensions and if any treatment

Esta auditoría fue solicitada :fecha
Última actualización: fecha

Detalles de envío

Envío:
$16.00 :cuenta días a través de :proveedor
Se envía desde:
Australia

Opciones de pago

  • paypal
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  • gempay
Este vendedor agrega 10.00% tax a las transacciones en Australia.

Descripción general

Tipo de listado : Standard
ID del Producto : 824941
Empieza : 23rd October 2024 09:24 pm PDT
* Todos los precios están en :moneda