Our Green Sea Turtle is Heirloom Quality, Limited Edition Jewelry crafted by J Nautora. The pendant and chain are made of Sterling Silver. The body of the turtle is hard fired (Vitreous) enamel using a technique know as Plique-à-jour, which is French for "letting in daylight". The turtle's eye is adorned with a white topaz. This piece comes with an 18" double link Sterling Silver chain, with a jumpring station at 16" so that it can be worn at the shorter length if desired. It has a durable lobster claw clasp. The dimensions of the pendant are 1 inch by 1 inch. NAUTORA Jewelry comes with a numbered Certificate of Authenticity, dark blue velvet gift pouch and a limited lifetime warranty. Your satisfaction is guaranteed.