編號 89915995

已出售
免費送貨 克拉。 1.35 天然埃塞俄比亞黑蛋白石 刻面 - 高度: 10 mm - 闊度: 8 mm- 0.27 g
最終出價
€ 35
10 小時前

免費送貨 克拉。 1.35 天然埃塞俄比亞黑蛋白石 刻面 - 高度: 10 mm - 闊度: 8 mm- 0.27 g

Natural Ethiopian Smoked Opal Clarity: from translucent to opaque; Pictures taken with high resolution camera 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. 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.

編號 89915995

已出售
免費送貨 克拉。 1.35 天然埃塞俄比亞黑蛋白石 刻面 - 高度: 10 mm - 闊度: 8 mm- 0.27 g

免費送貨 克拉。 1.35 天然埃塞俄比亞黑蛋白石 刻面 - 高度: 10 mm - 闊度: 8 mm- 0.27 g

Natural Ethiopian Smoked Opal
Clarity: from translucent to opaque;


Pictures taken with high resolution camera 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. 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.


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