Shibuichi

Shibuichi is a Japanese alloy used in sheet metal inlay or wire inlay. The technique involves the inlaying of gold, silver, and copper into a darkened silver base. Usually, shibuichi is composed of 75% copper and 25% silver. In contemporary jewelry, it can be found in Mokume Gane.
Tiffany Shibuichi Vase. c.1874. Photo © Trustees of the British Museum.

Tiffany Shibuichi Vase. c.1874.
Photo © Trustees of the British Museum.