Colombian Emeralds
Emeralds are a variety of the mineral beryl (Be3Al2(SiO3)6,) colored green by trace amounts of chromium and sometimes vanadium Beryl has a hardness of 7.5 - 8 on the 10 point Mohs scale of mineral hardness.Most emeralds are highly included, so their toughness (resistance to breakage) is classified as generally poor.
Emeralds are a variety of the mineral beryl (Be3Al2(SiO3)6,) colored green by trace amounts of chromium and sometimes vanadium Beryl has a hardness of 7.5 - 8 on the 10 point Mohs scale of mineral hardness.Most emeralds are highly included, so their toughness (resistance to breakage) is classified as generally poor.
