This piece has been purchased and remains in this collection for the purpose of art. Pendant is approximately 1 inch and includes necklace of 20 inches. To request an 18 or 24 inch chain, simply leave a note at checkout.  Spiny oysters are known for providing strength and courage. It is strongly believed that the spiny oysters give inner power to those who are facing trouble in form of domestic violence. Those, who are in such a situation, can use the spiny oyster shells in form of jewelry and can get the courage they need to stand against injustice.