Ruby
Ruby
Ruby

Ruby

€18,00
SKU: A883
Morogoro Region, Tanzania
This barrel-shaped ruby has a deep reddish-violet color and a distinct hexagonal crystal shape.
1.1x0.9x0.8 cm
2.1 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.