Material: stainless steel, it is lead free and nickel free. Stainless Steel is hypo allergenic, it doesn’t rust, change color or tarnish. Size: RN charm: 2.2cm (0.87 inch) * 1.7cm (0.67 inch), heart hat charm: 3cm (1.18 inch) * 3cm (1.18 inch), disc of bangle: 2cm (0.79 inch) * 2cm (0.79 inch), disc of necklace: 2.5cm (0.98 inch) * 2.5cm (0.98 inch), bangle diameter: 6.5cm (2.56 inch) adjustable, necklace chain length: 47cm (18.50 inch). The nurse jewelry set comes in a velvet bag ready for gift giving. Do you need a gift to Honor a special nurse, a way to say thank you to a hardworking RN in your life,Or maybe a nursing school graduation gift? You can choose the RN jewelry set as a great gift for a wonderful nurse/doctor. This is a new version of my RN jewelry set. This one is great for doctors, nurse practitioners, LVNs and other medical professionals. It has a stainless steel disc charm, heart nurse hat charm and a RN Cadeceus charm.