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

Antonio Rapisarda

Excellent Natural Ethiopian Rough Opal. White base with multicolour fire. Top stones for collectors. 
Dimensions from 18 mm to 21 mm. All pictures are taken with high resolution camera on bone dry material and on different backgrounds in order to depict the opal 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.



Wello, Ethiopia

Ct. 42.40 Top Quality Ethiopian Opal - Specimen- 8.48 g - (4)

Minerals & Meteorites

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tomorrow

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Size

XS (under 10 cm)

S (10–40 cm)

M (40–80 cm)

L (over 80 cm)

Dimensions

Height

Width

Depth

Object

Metaphysical stones

Raw mineral

Carved mineral

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Mineral cabochon

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Earrings

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Pendant

Necklace with pendant

2 piece jewellery set

Carving

Chain

Brooch

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Themed collection

Cameo

Collar necklace

3 piece jewellery set

Bead

Country of origin

Brazil

Madagascar

Afghanistan

Pakistan

Ethiopia

China

Australia

Uruguay

Morocco

Mexico

Tanzania

Myanmar

Dominican Republic

South Africa

Indonesia

Congo

Canada

Peru

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Material

Silver

Metal

Agate

Lapis Lazuli

Steel

Yellow gold

Mineral

Crystal

Marble

Bronze

Stone

Malachite

Gender

Women

Unisex

Condition

As new - unused

Excellent condition - barely used with minimal signs of wear

Natural

Enhanced

Excellent condition

Excellent condition: barely used with minimal signs of wear

Excellent

Good condition

Good condition - used with some signs of wear

Good condition - used with small signs of aging & blemishes

Hand carved

Good

Vintage - used with visible signs of wear

Very good

Restored

Very good condition - slightly used with small signs of wear

As new, unused

Fair condition

Period

Paleogene, Eocene (56 - 33.9 million years)

1990-2000

2020+

1970-1980

1980-1990

Cretaceous (145 - 66 million years)

2000-2010

Mid 20th century

Paleogene, Oligocene (33.9 - 23.03 million years)

Cretaceous, Lower (145 - 100.5 million years)

Paleogene (66 - 23.03 million years)

1650-1700

2020

2023

2024

2025

2026

Coral

Pearl

Natural Pearl

Blood Coral

Lapis lazuli

Aquamarine

Turquoise

Jade

Emerald

Peridot

Mixed gemstones

Akoya cultured pearl

Freshwater cultured pearl

Amethyst

Opal

Ruby

Tourmaline

Fire Opal

Quartz

Chalcedony

Carnelian

Rhodolite

Citrine

Garnet

Certification

No laboratory report

Gem research Swiss Lab (GRS)

Style

Art Deco

Antique

Minerals & Meteorites

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Ct. 42.40 Top Quality Ethiopian Opal - Specimen- 8.48 g - (4)

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