This is a 16" all gemstone necklace. This necklace features Black Agate. This stone is said to be a protection stone ancient warriors used it for luck in battle and for actual shields, it is also said to help with strength and courage to achieve a goal. There are other supporting stones in this piece . Whether you believe in ancient wisdom or not this is wearable art from nature and a unique piece no one else will have. It is new and 1-of-a-kind.