alb2045678

Rainbow coloured opal

Opal. Today this is valued as a semi-precious stone but this rainbow coloured opal was used in ancient Rome as a symbol of power. An Opal is not a single crystal but is made up of tiny spheres of silica. It also contains water and can dry out and crack, especially if exposed to heat.
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Rainbow coloured opal
Opal. Today this is valued as a semi-precious stone but this rainbow coloured opal was used in ancient Rome as a symbol of power. An Opal is not a single crystal but is made up of tiny spheres of silica. It also contains water and can dry out and crack, especially if exposed to heat.
Crédito:
Album / Universal History Archive/Universal Images Group
Autorizaciones:
Modelo: No - Propiedad: No
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Tamaño imagen:
5500 x 3667 px | 57.7 MB
Tamaño impresión:
46.6 x 31.0 cm | 18.3 x 12.2 in (300 dpi)