Ruby is the red variety of the mineral Corundum, of which Sapphire is also a variety. Corundum is the second hardest mineral next to Diamond (#9 on the Mohs scale, Diamond is #10 on the Mohs scale). The Latin word for Ruby is Ruber, meaning l
Ruby is the red variety of the mineral Corundum, of which Sapphire is also a variety. Corundum is the second hardest mineral next to Diamond (#9 on the Mohs scale, Diamond is #10 on the Mohs scale). The Latin word for Ruby is Ruber, meaning l