Ruby is one of the most highly prized gemstones, due to its intense colour and rarity. It is a variety of the mineral corundum, and its name is derived from the Latin word 'ruber' meaning 'red'. In the middle ages, rubies were thought to bring good health and cure bleeding.
It is thought that rubies are formed under intense heat a pressure by tectonic plates smashing together. They are mined in Thailand, Cambodia, Burma, India, Afghanistan, Australia, Namibia, Colombia, Japan, Scotland, Brazil and in Pakistan, with Bu