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

Antonio Rapisarda

Natural Ethiopian Cab Opals 
Clarity: from translucent to opaque;
,Pictures taken with high resolution camera on different backgrounds in order to depict the items as realistically as possible.

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Tutti gli articoli vengono fotografati singolarmente con fotocamera ad alta risoluzione ad ingrandimento macro in ambiente interno con illuminazione LED a 5000 gradi Kelvin, la temperatura di colore più vicina alla luce del sole. Le foto non subiscono alcuna modifica, ad eccezione del ritaglio. 
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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. 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. 11.30 Natural Ethiopian Opals Cabochon - Height: 10 mm - Width: 8 mm- 2.26 g

Classical Art & Impressionism

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Classical Art & Impressionism

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Ct. 11.30 Natural Ethiopian Opals Cabochon - Height: 10 mm - Width: 8 mm- 2.26 g

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