Pendant is approx 1.5 inches.  Includes 20 inch cord.  To request an 18 or 24 inch cord, simply leave a note for seller at checkout.  .Since the earliest of times, Lapis Lazuli has been associated with strength and courage, royalty and wisdom, intellect and truth. From antiquity, lapis lazuli has been used in the belief that it will ward off evil to it's meditater.