Fancy color diamonds
While fancy color diamonds have traditionally been a small part of the diamond business, their popularity and availability have grown in the past several decades. Only one in 10,000 diamonds has a fancy color. The most well-known historical and current sources of fancy color diamonds are India, South Africa, and Australia. Other diamond mine locations, including Brazil, Venezuela, Guyana, and Indonesia, also produce fancy color diamonds. The 45.52-carat Fancy Deep grayish blue Hope Diamond is the world’s most famous gem.
People have probably used tourmaline as a gem for centuries, but until the development of modern mineralogy, they identified it as some other stone (ruby, sapphire, emerald, and so forth) based on its coloring.
Tourmaline comes in a variety of different colors. In fact, it has one of the widest color range of any gems species.
Birthstone for October and the gem for 8th anniversaries.