Opal: Mineral information, data and localities.
Por um escritor misterioso
Descrição
Although it is still (2007) regarded as a mineral species for historical reasons, opal is not a true mineral in the accepted sense of the word as it is
Natural Green Opal Standing Free Forms x 2 From Madagascar
Opal, Properties, Types & Uses
Opal-AN (Hyalite Opal) with Carbonate-rich Fluorapatite (var: Staffelite) / Locality - Valec (Waltsch), Bohemia, Czech Republic
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Polished Highly Selected Rare Dark Green Opal Palm Stones / Gallets - sold per kg - From Antsirabe, Madagascar
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Opal / (variety - “Opal-AN”) / (variety - “Hyalite Opal”) / (“Blood Vessel Opal”) / Locality - San Luis Potosi, Mexico
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Opal: Mineral information, data and localities.
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