Sterling base with 22k yellow ,14k rose, white & green 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 Mokume gane. It is made with sterling silver and shadudo. The shakudo is a gold and copper alloy. Diamonds are: (2) 2mm , (3) 1.7mm, (2) 1.5mm, & (2) 1.3mm SI1 quality brilliant cut.