The Celtic Star Knot design symbolizes balance and integrity, cohesion and harmony in all things. The Star Knot pendant is made of lead-free pewter and comes suspended on a simple stainless steel chain. Pendant measures two inches tall, by one inch wide, by one-eighth inch thick. Stainless steel chain measures thirty inches. Weighs just under three quarters of an ounce. While we avoid certain metals such as nickel and chrome-alloys, we have yet to hear of any adverse reactions for those who have metal sensitivities.