NATURAL RUBY CRYSTAL
A lovely Natural Ruby Crystal. Known by its mineral name as corundum and widely known as sapphire. Red sapphire is called Ruby. This is a great natural ruby showing excellent crystal shape. Super duper!
3cm x 3cm x 1.3cm, 34g.
Ruby is the red variety of corundum, the second hardest natural mineral known to mankind. Non red variety of corundum is Sapphire. Sapphires are well known among the general public as being blue but can be nearly any color. The red color in ruby is caused by trace amounts of the element chromium. The best shade of red for ruby is often given the name pigeon blood red. Ruby can be any shade of red up to almost pink.