Faceted smoked opal from Wello, Ethiopia.
Pictures taken with high resolution camera on bone dry material and on different backgrounds in order to depict the opal as realistically as possible.
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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 colours.
- Forma mineral / Tipos de meteoritos
- Cts 1.38 Ópalo negro etíope natural
- Ópalo etíope natural
- 10×8×4.5 mm
- 0.276 g
- Origen (región / ciudad)
- Origen (país)