This is a 18" all gemstone necklace. This necklace features Black Agate. This stone is said to be a grounding stone designed to calm and soothe it is also good for protection from negtivity. There are other supporting stones in this piece: Crazy Lace & Black Agate, Onyx and Jasper. 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.