This jewelry is hypoallergenic, tarnish-resistant, and nonfading. It is gold-plated stainless steel (mirror polished AKA super shiny finish) and has a lobster clasp closure. Add a personalized touch to the jewelry with our laser engraving service. Write initials, a special date, bible verse, or a simple "I Love You" to be engraved on this pendant forever. You are able to customize by choosing your own word(s), number(s), and/or character(s) and one of the 4 fonts provided. The word, character, letter, or number will be centered on this piece of jewelry unless specified. -The Bar Necklace is 18 inches long and the bar is roughly 6x35mm. -The Cross Necklace is 17.5 inches long and the cross is 17mm wide by 31mm long. -The Heart Necklace is 18 inches long and the heart is 16mmx14mm. -The Lock Necklace is 17.25 inches long with a 2 inch extender and the lock is 10mm wide. -The Vertical Bar Necklace is 17.5 inches long and the 3D cylinder is roughly 5x40mm. -The Curb Chain Necklace is 16 inches long with a 2 inch extender and the bar is roughly 20mm. -The Paperclip Necklace is 17.5 inches long and the bar is roughly 20mm. -The Mens Cross Necklace is 24 inches long and the cross is 23mm wide by 40mm long. -The Round Pendants come in a 13mm option, a 16mm option, and a 19mm option. (Price does not include chain. Please purchase separately.) -The Tag Pendants are 13mm x 6mm. (Price does not include chain. Please purchase separately.) -The Rectangle Pendants are 12mmx21mm. (Price does not include chain. Please purchase separately.) -The Bow Pendants are 10mmx10mm. (Price does not include chain. Please purchase separately.) -The Curb Chain Bracelet is 6" long + 1" extension and the bar is roughly 4mmx20mmx1mm. -The Paperclip Bracelet is 7 inches long and the bar is roughly 15mmx4mm. -The Bar Bracelet is roughly 10 inches long and the bar is roughly 40mm.