buyers guide


Emerald is one of the hardest gemstones. It measures 7.5 – 8 on the Mohs hardness scale. However, the inclusions which are almost always present, makes Emerald quite brittle and susceptible to breaking.

The colouring agent is usually chrome or vanadium.

Emeralds have a specific gravity of 2.72.

Emeralds are ‘emerald cut’ i.e. oblong in shape with cut corners.

The crystal structure is hexagonal.