Some of the largest geodes containing amethyst have been found in Brazil. Carnelian Also called Cornelian, this translucent, reddish orange variety of chalcedony was once thought to still the blood and calm the temper. The best carnelian is from India. Coral Coral is made up of the skeletal remains of marine animals called coral polyps. These tiny creatures live in colonies that form branching structures as they grow eventually forming coral reefs and atolls.
Most corals are red, pink, white and blue.
Red coral is the most valuable and has been used in jewelry for thousands of years. Hematite - Hematite usually occurs as massive outcroppings of opaque material. The stone has a metallic luster that shows a blood red color when cut into thin slices. Jade J adeite and Nephrite these two types were recognized in 1863. Nephrite is more common.