Ruby Banded 2mm Round - 15-16 Inch birthstone_bloodstone and the green color is

and the green color is caused by a reaction in the stone when the chrome is introduced to water

as well as translucent and iridescent

calcium carbonate and other materials

but a combination of minerals

Lava is rock from the molten center of the earth

Ruby Banded 2mm Round - 15-16 Inch birthstone_bloodstone and the green color isRuby has long been considered one of the most beautiful and valuable gemstones on the planet. It is also one of the hardest, second only to Diamond. At times in ancient history, Ruby was valued more highly than any other gem, including Diamond. Its believed that Kublai Khan once offered an entire city in trade for a sizable Ruby.