All organic chain is carved by hand. In the case of the chains made of wood, they are absolutely seamless; carved from a single long slab of wood (see link). Chains made from bone, horn and coral are modeled and constructed into chain links.
Water buffalo (Bubalus bubalis). The bone form is completely hand carved.
Black Sterling is acheived by the oxidization of sterling silver. This blackened state will fade or scratch off over time but we will be happy to help teach you how to re-oxidize your pieces if you are interested (it is a very easy process). Additionally, please note that Black Sterling tends to look darker in photograph than in person.