No Reserve - 83.0 ct. Top Color Ethiopian Opal - Rough Collection- 16.6 g
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Ethiopian rough opal from Wello, Etiopia, in a Rough Collection, weighing 16.60 g.
AI-assisted summary
Description from the seller
Superb parcel of natural noble Ethiopian rough opals, selected for quality and play-of-colour effect.
Dimension (per length) from 10.0 to 18.0 mm.
All pictures are taken with high resolution camera on bone dry material and on different backgrounds in order to depict the opals as realistically as possible.
Worldwide shipping with registered mail and tracking number.
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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.
Superb parcel of natural noble Ethiopian rough opals, selected for quality and play-of-colour effect.
Dimension (per length) from 10.0 to 18.0 mm.
All pictures are taken with high resolution camera on bone dry material and on different backgrounds 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.
Details
Main mineral
No Reserve - 83.0 ct. Top Color Ethiopian Opal -
Mineral form
Rough Collection
Weight
16.6 g
Origin (region/city)
Wello
Country of origin
Ethiopia
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.
