Ruby
Ruby
Ruby
Ruby

Ruby

Sale price€29,00
SKU: A586
Morogoro Region, Tanzania
A slightly transparent ruby cluster of intense red-violet color, good luster and strong pink orange under UV light.
1.5 x 1.1 x 0.7 cm
1.8 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.