FREE SHIPPING - 8.30 Ct. Ethiopian Opal Cabochon Oval - Top Color Collection - Height: 7 mm - Width: 5 mm- 1.66 g
02
days
12
hours
48
minutes
23
seconds
Current bid
€ 7
No reserve price
Expert
Selected by Georgia Foteinou
Holds BSc in geology and post-graduate qualifications in geochemistry.
Estimate € 80 - € 120
18 other people are watching this object
 Bidder 6484 | €7 | |
|---|---|---|
 Bidder 2466 | €6 | |
| Bidder 5568 | €5 | |
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This Ethiopian Wello opal cabochon on a crystal base offers vivid play of color and is completely untreated.
AI-assisted summary
Description from the seller
A collection of natural white Ethiopian Wello cabochon opals with crystal base and great play-of-colour effect. Top stones, totally untreated.
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 approximately 150 to 300 nm in diameter arranged in a hexagonal or cubic close-packed lattice. These ordered silica spheres produce the internal colors by causing interference and diffraction of light passing through the microstructure of the opal.
Photography Settings
All items are photographed individually with a high-resolution camera in macro zoom mode indoors, using LED lighting at 5000 Kelvin, the color temperature closest to sunlight. The photos are not altered in any way, except for cropping.
Assistance
You can contact us at any time through Catawiki messaging for any further information about the item of your interest, and we will try to respond as soon as possible.
Shipping
Worldwide shipping with Registered Mail and tracking number. We offer combined shipping to ensure maximum savings on postal costs.
Restitution
We always strive to do our best, but if something is not to your liking, in accordance with regulatory provisions and our own conviction, we guarantee a refund to any customer who is not satisfied with their purchase, regardless of the reason.
Thank you for your attention and Happy bidding!
A collection of natural white Ethiopian Wello cabochon opals with crystal base and great play-of-colour effect. Top stones, totally untreated.
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 approximately 150 to 300 nm in diameter arranged in a hexagonal or cubic close-packed lattice. These ordered silica spheres produce the internal colors by causing interference and diffraction of light passing through the microstructure of the opal.
Photography Settings
All items are photographed individually with a high-resolution camera in macro zoom mode indoors, using LED lighting at 5000 Kelvin, the color temperature closest to sunlight. The photos are not altered in any way, except for cropping.
Assistance
You can contact us at any time through Catawiki messaging for any further information about the item of your interest, and we will try to respond as soon as possible.
Shipping
Worldwide shipping with Registered Mail and tracking number. We offer combined shipping to ensure maximum savings on postal costs.
Restitution
We always strive to do our best, but if something is not to your liking, in accordance with regulatory provisions and our own conviction, we guarantee a refund to any customer who is not satisfied with their purchase, regardless of the reason.
Thank you for your attention and Happy bidding!
Details
Main Mineral
FREE SHIPPING - 8.30 Ct. Ethiopian Opal Cabochon Oval -
Mineral Form
Top Color Collection
Weight
1.66 g
Origin (Region/ City)
Hello
Country of Origin
Ethiopia
Height
7 mm
Width
5 mm
Depth
3 mm
Disclaimer
It is believed that certain gemstones and minerals have beneficial health and spiritual properties. However, using or wearing gemstones or minerals does not mean that you can treat, cure or prevent any disease. Please consult your health care professional for information on health care issues and do not stop any medications or courses of treatment, without first consulting your health care professional. The use of gemstones or minerals as a wellness therapy is one of personal choice. While stones or crystals have been used historically to relieve or prevent symptoms, the objects sold on our website offer no guarantee of results. Therefore, Catawiki cannot guarantee or be held liable for the effectiveness of these objects sold herein.
It is believed that certain gemstones and minerals have beneficial health and spiritual properties. However, using or wearing gemstones or minerals does not mean that you can treat, cure or prevent any disease. Please consult your health care professional for information on health care issues and do not stop any medications or courses of treatment, without first consulting your health care professional. The use of gemstones or minerals as a wellness therapy is one of personal choice. While stones or crystals have been used historically to relieve or prevent symptoms, the objects sold on our website offer no guarantee of results. Therefore, Catawiki cannot guarantee or be held liable for the effectiveness of these objects sold herein.
