Carnelian Carnelian is a form of chalcedony quartz and is found throughout the world. One of the earliest Uses - of carnelian was in jewelry found in the tom... See more
Onix This form of chalcedony quartz takes its name from a Greek word that referred to a fingernail, claw or hoof. It was popular in ancient Greece where... See more
Coral The coral that is considered a gemstone comes from the species Corallium rubrum. The best grows in clear, shallow (10 to 45 feet deep) warm water. ... See more
