Ruby
Ruby
Ruby

Ruby

€45,00
SKU: A583
Ijaka, Kongwa District, Dodoma Region, Tanzania
New find from the heart of Tanzania. Long ruby crystal (>5 cm) with good faces, beautifully embedded in a light zone of the dolomite/phlogopite matrix.
7.1 x 4.2 x 3.0 cm
73.3 g

Rubies are red varieties of corundum (chemically aluminum oxide (Al2O3)). The red color is caused by small amounts of chromium ions. Rubies crystallize in the trigonal crystal system, have a Mohs hardness of 9 and glow intensely red under UV light.
Rubies are found worldwide, with some of the most important locations being in Myanmar, Thailand, Sri Lanka, Madagascar and Tanzania.