Ruby
Ruby
Ruby

Ruby

€32,00
SKU: A576
Ijaka, Kongwa District, Dodoma Region, Tanzania
New find from the heart of Tanzania. Very beautiful pink crystal with excellent faces.
4.2 x 2.6 x 1.9 cm
21.0 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.