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Opal surface, SEM

Opal surface, SEM

A630/0346

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Credit

STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY

Caption

Opal. Coloured scanning electron micrograph (SEM) of the fractured surface of an opal, a type of precious stone. Opal is a form of hydrated, amorphous silica (SiO2). The glittering iridescent colours of an opal are due to water molecules trapped in the silica structure.

Release details

Model release not required. Property release not required.

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