Interiors & Decorations

Jewellery & Precious Stones

Watches, Pens & Lighters

Fashion

Coins & Stamps

Comics & Animation

Classic Cars, Motorcycles & Automobilia

Wine, Whisky & Spirits

Asian & Tribal Art

Trading Cards

Toys & Models

Archaeology & Natural History

Sports

Music, Movies & Cameras

Books & Historical Memorabilia

The mystery of Minerals, brought to you by {name}

Antonio Rapisarda

Wonderful collection of Natural Ethiopian Rough Opals from 13 to 18 mm approx.
All pictures are taken with high resolution camera on bone dry material in order to depict the opals as realistically as possible.
Worldwide shipping with registered mail and tracking number.

An opal is a hydrated form of silica with a water content ranging from 3 to 21%. Indeed, it is this permeability to water that makes it a hydrophile.
Opals are deposited at a relatively low temperature and may occur in the fissures of almost any kind of rock, being most commonly found with limonite, sandstone, rhyolite, marl, and basalt. Only precious opals show a variable interplay of internal colors.
At microscopic scales, precious opal is composed of silica spheres some 150 to 300 nm in diameter in a hexagonal or cubic close-packed lattice. These ordered silica spheres produce the internal colors by causing the interference and diffraction of light passing through the microstructure of the opal.


Well, Ethiopia

St. 47.80 Ethiopian Opals - Rough- 9.56 g - (4)

Minerals & Meteorites

Reserve price

No reserve price

Buy now

Closing date

Sunday

Tuesday

Saturday

Wednesday

tomorrow

Monday

19 February

today

22 February

20 February

Budget

From

Location

Germany

Italy

The Netherlands

France

Spain

Lithuania

Portugal

United Kingdom

Poland

Czech Republic

Latvia

Türkiye

India

Ireland

Belgium

Switzerland

Romania

Greece

Austria

Taiwan

Estonia

Slovak Republic

Finland

Singapore

Sweden

Dimensions

Height

Width

Depth

Object

Raw mineral

Metaphysical stones

Carved mineral

Meteorite

Amber

Necklace

Mineral cabochon

Bracelet

Ring

Pendant

Nugget

Earrings

Gemstone cabochon

Chain

2 piece jewellery set

Necklace with pendant

Bangle

Lunar meteorite

Collar necklace

Drop earrings

Pallasite meteorite

Achondrite meteorite

Tektite meteorite

Chondrite meteorite

Fossilised wood

Country of origin

Brazil

Madagascar

Ethiopia

Afghanistan

China

Australia

Pakistan

Tanzania

Morocco

Mexico

Uruguay

South Africa

Indonesia

Algeria

United States

Peru

Russia

Myanmar

Namibia

Material

Silver

Stone

Agate

Mineral

Steel

Brass

Plaster

Metal

Lapis Lazuli

Malachite

Gender

Women

Unisex

Condition

As new - unused

Natural

Excellent condition - barely used with minimal signs of wear

Enhanced

Good condition - used with some signs of wear

Composed

Good condition

Very good condition - slightly used with small signs of wear

Good condition - used with small signs of aging & blemishes

Hand carved

Near mint

Excellent condition

Excellent condition: barely used with minimal signs of wear

Good

Very good

Restored

Period

Paleogene, Eocene (56 - 33.9 million years)

Paleogene, Oligocene (33.9 - 23.03 million years)

Neogene, Miocene (23.03 - 5.33 million years)

2026

Cretaceous, Lower (145 - 100.5 million years)

2010-2020

2025

1960-1970

1970-1980

1990-2000

2020+

Cretaceous, Upper (100.5 - 66 million years)

Cretaceous (145 - 66 million years)

Devonian (419.2 - 358.9 million years)

Mesozoic (251.9 - 66 million years)

Cenozoic (66 - 0 million years)

1850-1900

Mid 20th century

Opal

Coral

Pearl

Freshwater cultured pearl

Aquamarine

Turquoise

Quartz

Amethyst

Garnet

Lapis lazuli

Star Sapphire

Ruby

Emerald

Onyx

Carnelian

Natural Pearl

Cat's Eye (Chrysoberyl)

Jade

Mixed gemstones

Akoya cultured pearl

Moonstone

Topaz

Blood Coral

Sapphire

Certification

No laboratory report

GEM-TECH Istituto Gemmologico

Anchor Cert

Gem research Swiss Lab (GRS)

Antwerp Laboratory for Gemstone Testing (ALGT)

Signature

Not signed

Colour

Green

Purple

Blue

Orange

Yellow

Minerals & Meteorites

This object is no longer available, but there’s still lots to explore

St. 47.80 Ethiopian Opals - Rough- 9.56 g - (4)

Popular in Minerals & Meteorites

4690 objects

Related collections