THE PREMIER MARKETPLACE FOR REAL OPALS

Sie haben bei dieser Auktion nicht geboten.

$76.00
Aktuelles Gebot
1
Gebote
Geschlossen
11/01/2024 11:42 am

BRIGHT WELO OPAL BETTLE CARVING 8.34 CTS [VS3421 ]

1
7037
9

Artikelnummer
Abmessungen (mm)
22.000 x 15.000 x 6.000mm
Gewicht (cts)
8.000
Typ
Carved
Farben

 header main 

 "WELO"  FIELD OPAL ETHIOPIA

This natural untreated  carving that is  from the Welo area of Ethiopia.This is a well polished high dome stone suitable for a ring or pendant.

It is showing hot neon  multi colours of BLUE GREEN ORANGE RED.

Transulant with silky  white base tone.

Body tone N-7

Brightness out of 5 -4

Hydrophane

 

THIS IS A WELL POLISHED HIGH DOME STONE SO YOU WILL SEE THE REFLECTION FROM THE LIGHTS


 

 

 

Opal Body Tone Scale as per recommendation by the Australian Opal and Gem Industry Association Ltd.
opal color guide
Briliance Scale:
1 Faint, 2 Dull, 3 Bright, 4 Very Bright, 5 Brilliant - Gem Quality

This is what the GIA has to say about this type of opal

 

 

 

 

New Play-of-Color Opal from Welo, Ethiopia

A new source of high-quality play-of-color opal was discovered in early 2008 in Welo Province, Ethiopia, about 500 km north of Addis Ababa. This deposit is geographically distinct from the Mezezo deposit in Shewa Province, which was discovered in the early 1990s (see, e.g., Spring 1994 Gem News, pp. 52–53).

These contributors examined a parcel of about five rough and 30 cut Welo opals. The cabochons showed good play-of-color ; the vast majority were white and transparent, but some had a bodycolor varying from light yellow to dark “chocolate” brown. Compared to Mezezo opals (e.g., J.-P. Gauthier et al., “L’opale d’Ethiopie: Gemmologie ordinaire et caractéristiques exceptionnelles,” Revue de Gemmologie a.f.g., No. 149, 2004, pp. 15–23), those from the new deposit generally appear much whiter. We noted all spectral colors in the play-of-color in our samples. Most of the cabochons were similar in appearance to opals from Australia or Brazil. However, many samples displayed a columnar structure of play-of-color opal within common opal (figure 2), as first described in material from Mezezo (again, see Gauthier et al., 2004). This feature is only very rarely observed in opals from sources outside Ethiopia.

The hydrostatic SG of the opals ranged from 1.80 to 2.10. This broad range is in part due to the high porosity of some samples, as revealed by a significant weight increase after immersion in water (up to 8%). Fluorescence varied from inert to moderate yellowish white to both long- and short-wave ultraviolet (UV) radiation. Samples that were inert displayed an unexpected greenish phosphorescence of moderate intensity. No luminescence was observed in the opals with a yellow-to-brown bodycolor, even the light ones; these darker bodycolors are probably due to the presence of iron, which quenches luminescence. The yellow-to-green luminescence is likely due to the presence of uranium (E. Gaillou et al., “The geochemistry of gem opals as evidence of their origin,” Ore Geology Reviews, Vol. 34, 2008, pp. 113–126). Fourier-transform Raman spectra were obtained for several samples using a Bruker RFS 100 spectrometer. All spectra were consistent with opal-CT, with Raman bands at about 1070, 780, 670, and 345 cm-1, and water-related bands at about 3200 and 2950 cm-1.

Welo opal is found in volcanic rock, possibly a rhyolite. The rough samples we examined consisted of opal (either common or play-of-color) cementing fragments of the host rock. By contrast, opal from Mezezo fills cavities in rhyolite, forming nodules. Despite these differences, the fact that columnar structures are seen in opals from both deposits (but very rarely from elsewhere) seems to indicate similarities in the conditions of their formation.

 

Versandanbieter Versand nach Australia Versand in den Rest der Welt
FedEx $12.00 / 3 $39.00 / 10
Australia
FedEx erhält Rabatt auf $12.00 bei Bestellungen mit 2 oder mehr Artikeln
Rest der Welt
FedEx erhält Rabatt auf $39.00 bei Bestellungen mit 2 oder mehr Artikeln
Registered Shipping $9.00 / 21 $16.00 / 21
Australia
Registered Shipping erhält Rabatt auf $9.00 bei Bestellungen mit 2 oder mehr Artikeln
Rest der Welt
Registered Shipping erhält Rabatt auf $16.00 bei Bestellungen mit 2 oder mehr Artikeln

volcanicopals
Welcome to the colorful journey of Paul Sedawie, a lifelong enthusiast of opals. Paul's fascination with these gemstones began at the tender age of 14 when he acquired his first boulder rough. Entranced by their natural beauty and vibrant colors, Paul embarked on a remarkable adventure in 1989, moving to Lightning Ridge to own an opal claim. Despite the challenges of mining, the experience bestowed upon him priceless memories and a deep respect for the craft. Today, Paul's journey has evolved, transitioning from mining to curating exquisite opals from partnerships and miners worldwide. With a keen eye for quality, he meticulously oversees the cutting process, personally crafting the finest black opals. Together with his sons, Peter and Ross, Paul continues to share his passion for opals with customers globally. Ross, a graduate of the AIGS Gem School, spearheads SEO efforts, while Peter manages worldwide dispatch and opal cutting. As a testament to his dedication, Paul celebrates his 30-year milestone in the opal business in 2019, having sold over 100,000 stones and parcels through Opal Auctions. This E-book offers a glimpse into Paul's extraordinary collection, a culmination of decades spent immersed in the opal industry. With a commitment to preserving Australia's opal heritage, Paul cherishes his personal collection of opal fossils, ensuring they remain in their homeland. Join us in experiencing Paul's passion for opals, and discover the enchanting world of these captivating gemstones. Best regards, Paul Sedawie
Lightning Ridge , Australia
Verifiziert
5973 Feedback

  • estherwolf
    estherwolf
    Positiv

    Paid and shipped - no feedback left after 100 days

  • moss
    moss
    Positiv

    Excellent thank you

  • skeeter0061
    skeeter0061
    Positiv

    Paid and shipped - no feedback left after 100 days

  • estherwolf
    estherwolf
    Positiv

    Paid and shipped - no feedback left after 100 days

  • ghosttexan
    ghosttexan
    Positiv

    Paid and shipped - no feedback left after 100 days

Gebotsverlauf (1)
estherwolf
Zuvor bei diesem Verkäufer gekauft
vor 11 Monaten
$75.00

Warum überbieten sich Nutzer selbst?

Symbol „Automatisches Gebot“
Automatisches Gebot

Wenn ein Gebot abgegeben wird, ist dies der Höchstbetrag, den eine Person für das Produkt bieten möchte. Unser System bietet dann automatisch im Namen des Bieters und erhöht das Gebot schrittweise bis zum Höchstbetrag, um die Position des Höchstbietenden beizubehalten.

Wenn ein Symbol mit der Aufschrift „Automatisches Gebot“ angezeigt wird, bedeutet dies, dass unser System aktiv Gebote für den Bieter basierend auf seinem Höchstgebot abgibt. Dies kann so aussehen, als würden die Bieter sich selbst überbieten, aber es ist lediglich das Ergebnis der Aktualisierung des Gebots durch das System, um das Höchstlimit des Bieters widerzuspiegeln.

Prüfung

Das Opal Sheriff -Programm ermöglicht unseren Mitgliedern, für jedes Produkt eine Prüfung anzufordern, die von einer unabhängigen Gemologist durchgeführt wird, die die Genauigkeit der Artikelbeschreibung und der Bilder beurteilt.

Versanddetails

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

Zahlungsmöglichkeiten

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

Überblick

Auflistungstyp : Standard
Produkt ID : 264938
Startgebot : $75
Beginnt : 4th January 2024 06:00 pm PST
Endet : 11th January 2024 11:42 am PST
* Alle Preise sind in USD