These shell pendants are sturdy by plating thickness in edge and oil sealing. You can wear cowrie shells anywhere, such as pool, ocean, shower, won't tarnish when touch the water. REAL SHELL: All the sea shells we used are the Real shells. The colors and material are natural. Note; Every shell charms are unique, size and pattern are not totally same 1 BOX 20PCS SHELL PENDANT: This total of 20pcs cowrie seashells pendant. A plastic box(7.4x7.2x1.7cm) is included to help you easy to store and protect the jewelry findings SIZE: The cowrie seashells pendant of size about 1.8 to 4 x 0.8 to 3.8 x 0.3 to 1.3cm MENTAL PLATED SHELL CHARMS: These shell pendants are sturdy by plating thickness in edge and oil sealing. You can wear cowrie shells anywhere, such as pool, ocean, shower, won't tarnish when touch the water. Note; In order to use the shell charms for a long time, do not use the charms with sharp objects together WIDE APPLICATION: Premium shells are widely used in jewelry making project, such as DIY necklace, bracelet, earring, anklet, wedding decoration or other handmade products