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Red corundum (ruby) crystals embedded in migmatite

Ketito, Arusha region, Tanzania

Red corundum (ruby) crystals embedded in migmatite
Red corundum (ruby) crystals embedded in migmatite
Red corundum (ruby) crystals embedded in migmatite
Red corundum (ruby) crystals embedded in migmatite
Red corundum (ruby) crystals embedded in migmatite
Red corundum (ruby) crystals embedded in migmatite
Red corundum (ruby) crystals embedded in migmatite
SOLD *Prices include VAT
Article code:  IV.C.0410.003
Several attractive, sharp hexagonal Ruby crystals up to 45 mm long  in migmatite.
Rarely do you find such a sharp, uniform hexagonal prism. Very strong red fluorescence.
The specimen measures approximately 120x110x65 mm and weighs approximately 1,6 kilogramme.

Chromium is the trace element that causes ruby’s red. The strength of ruby’s red depends on how much chromium is present. It also causes the red fluorescence, the more chromium, the stronger the red color.
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