Corundum (var. Ruby)
Tanzania - Africa
Al2O3
Description
Hexagonal, barrel shaped prism with a transparent red termination on a matrix of translucent violet-pink corundum with a little graphite.
Morogoro
Probable extraction year
1988
From the Tamil kuruntam, which probably came from the Sanskrit kuruvinda for ruby, and the Latin ruber for the color red.
Class
4 - Oxides and Hydroxides / Oxides
Dimensions (length x with x height in cm)
5.5x6.5x6
Hardness (Mohs)
9
Density (G/cm3)
4.1
