Stainless Steel Glass Locket Necklaces are available in 2 sizes and feature icon cutout insert discs that are heavy 1 mm thick stainless steel and are removeable and interchangeable with other discs. Add in a little beach sand from your favorite beach, a tiny pebble or piece of beach glass you find on your journeys and adventures to personalize your locket. Locket comes on an 18" stainless steel snake chain with 2" extender and drop. Small locket size is 25 mm; large locket size is 30mm. Made in Michigan's Upper Peninsula.