This is a stainless damascus damasteel ring made from 304L and 316L hypoallergenic stainless steel from Damasteel in Sweden. It is 10mm wide but can be altered to your liking. It has a 2.5mm VS1 Canadian diamond in its tension setting and a 14k rose gold inlay. The rings design is reinforced with upper and lower stainless braces to secure not only the gold inlay but locking in the stone as well. 

Materials: hypoallergenic stainless steel damasteel, 304 L, 316 L. 1.44 14k / 2.5 diamond less than 2mm depth low profile

VS1 Canadian diamond

14k gold