Rubies And Sapphire is a photograph by Natural History Museum, London/science Photo Library which was uploaded on September 21st, 2018.
Rubies And Sapphire
Rubies and sapphire. These are both varieties of the mineral corundum, which is itself a crystalline form of aluminium oxide with traces of iron,... more
Title
Rubies And Sapphire
Artist
Natural History Museum, London/science Photo Library
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Photograph
Description
Rubies and sapphire. These are both varieties of the mineral corundum, which is itself a crystalline form of aluminium oxide with traces of iron, titanium and chromium. Rubies are always red, mainly due to the presence of chromium, whereas sapphires come in a number of colours.
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September 21st, 2018
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