I made these necklaces using tarnish resistant gold/925 silver chain with extenders making them adjustable from 18"-20"-22" in length. You have 8 enamel Kawaii love heart pendants to choose from. There are 18k gold plated connecting rings. * Your purchase will arrive in pretty packaging * Necklace measurements: 1.2mm thick. * Pendant size: 16mm in long, 15mm in wide, 3mm in thickness, 1.6mm in hole size.