【How-to】How to spell diamond - Howto.org

Said to be “a girl’s best friend”, the name ‘Diamond’ derives from the ancient Greek word ‘adamas’ meaning ‘invincible’, which it gained because of its sheer strength. … Unlike biblical gemstones such as Amethyst, Topaz, Ruby, and Sapphire, very little was documented about Diamonds until the 14th century.