Colour: This gem stone comes in a large variety of colours from white to black.
Hardness: 7˝ (on Moh’s hardness scale.)
Specific Gravity: 4.00. This is an indication of the stone's density, calculated by comparing the stone's weight with the weight of an equal volume of water.
Refractive Index: 1.76 to 1.83. This is a measure of the amount light is bent from its original path when passing through a stone.
Chemical composition: Aluminium silicate, though the Uvarovite Garnet is chromium silicate as the presence of chromium makes this garnet green.
Principal sources: Russia, Brazil, Sri Lanka and USA.