Sterling silver base with patina. 22k yellow bimetal, 14K green, and rose gold and mokume gane overlays. Mokume gane is in wood grain patterning made from18k green gold,14k rose & white gold and shakudo. The stripe patterning is made with sterling silver and shadudo. The shakudo is a gold and copper alloy. Stones are: 12mm checkerboard faceted Spectrolite. (1) 2mm brilliant cut diamond.