Each tree of life pendent and chain are made of approx 5g of sterling silver and is plated with Rhodium to insure it's luster and will not turn your skin green. Rhodium is a metal more precious than gold and is hypoallergenic. Each bundle contains 5 necklaces and 5, 18 inch chains with a lobster clasp. Eachone also comes in a red and black velvet box.