Stainless steel Damasteel damascus & 14k white gold. 18k also available upon request. This seen here was ordered in an 8mm wide band which is what this listing is for. 

Materials: 304L stainless, 316L stainless, stainless damascus, 14k white gold, 14k rose gold, 14k yellow gold, gold, white gold, rose gold, 18k, 14k.