Sterling Silver base with patina. Applied mosaic patterning is made from 22k bimetal, 14K rose and green gold and mokume game. 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 shakudo. The shakudo is a gold and copper alloy. Stones: Rough cut Beryl approx: 12.5mm x 22mm and (1) 2.0mm SI 1 diamond, both set in 18K yellow gold.