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Ring Schwarzer Chalama  Opal / Cabochon / neu

In 925. Sterlingsilber gefasst

Gewicht:  3,0 g / 15 ct

Neu und ungetragen

Ringgröße:  

U 63    
UK U 1/2
US 10,3
Fr 23
Innendurchmeser: 20,0 mm

Schwarze Opale kommen genau wie seine andersfarbigen Vertreter als kugelige bis knollige Masse ohne erkennbare Kristallstruktur vor. Ihre Schönheit offenbart sich zumeist erst beim Anschliff ebendieser. Charakteristisch für diese Form der Opale ist ihre Opaleszenz, welche sich in intensivem Regenbogenschimmern äußerst. Zudem ist das Grundgestein des Opals hier dunkel, gräulich bis schwarz, was ihm diesen Namen einbrachte.

Schwarze Opale entstehen, genau wie andere Opale auch aus kieselsäurehaltigen Flüssigkeiten, welche in Sedimentiten oder Vulkaniten auskristallisieren. Ihr charakteristischer Schimmer ist auf Wassereinschlüsse im inneren dieses Minerals zurückzuführen.

Versand als versichertes Einschreiben.

Australia

Black Chalama Opal Ring / Cabochon / new- 3 g - (1)

Minerals & Meteorites

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Material

Silver

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.925 silver

Gender

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Condition

As new - unused

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Period

Paleogene, Eocene (56 - 33.9 million years)

2020+

Neogene, Miocene (23.03 - 5.33 million years)

2026

Neogene (23.03 - 2.58 million years)

Paleogene (66 - 23.03 million years)

Ordovician (485.4 - 443.8 million years)

2020

Jurassic (201.3 - 145 million years)

1850-1900

Late 20th century

1970-1980

1990-2000

Paleogene, Oligocene (33.9 - 23.03 million years)

Cretaceous, Upper (100.5 - 66 million years)

Cretaceous, Lower (145 - 100.5 million years)

Jurassic, Upper (163.5 - 145 million years)

Cretaceous (145 - 66 million years)

Devonian (419.2 - 358.9 million years)

2025

20th - early (WW I)

Coral

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Certification

No laboratory report

GEM-TECH Istituto Gemmologico

Non-CITES species

Gem research Swiss Lab (GRS)

Antwerp Laboratory for Gemstone Testing (ALGT)

CITES Appendix II - Annex B in the EU

Style

Art Deco

Minerals & Meteorites

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Black Chalama Opal Ring / Cabochon / new- 3 g - (1)

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