The name Chalcedony has been derived from the Greek port city of Chalcedon (today Kadky, Turkey). Varieties of Chalcedony were worked into jewelry and carving by the ancient civilizations in Egypt, Greece and Rome. It is a cryptocrystalline form of quartz, transparent to opaque depending on the structure and type.

A creative stone, Blue Chalcedony stimulates the ability to learn new languages and improves memory. It gives feelings of light-heartedness and optimism. This stone is said to improve self-perception and enhance the immune system.