Le rubis est un variété de
corindon qui contient des traces de chrome. La
couleur rouge du rubis en lumière naturelle
ainsi que sa fluorescence proviennent du
chrome.
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Ruby is a variety of corundum that contains
trace-amounts of chromium. The chromium causes the red color
of ruby in plain light as well as its red fluorescence.
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CORUNDUM, (var. Ruby) Karnataka State,
India
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UV longs / long-wave
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collection et
photographie ©
Axel
Emmermann
Courtesy of the MKA
(Mineralogische Kring Antwerpen)
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