Natural Green Aventurine Healing Point Gold Tone Double Layer Crescent 🌙 Moon Necklace. Shorter Length is 17 3/4”. Longer Length is 21”. Ext. is 2.25” *** Natural stones are unique. Although they are very similar, no two gemstones are exactly alike. They are smooth with slight variations due to their natural properties which add to their uniqueness and charm - varying slightly from the one shown in photos.