I've never heard of that brand before. Considering the photo is from 1993, they may be out of business. Are you looking for something with a similar style? Denim Vests are really coming back in terms of popularity.
Jonathan did a post of the Diesel Black Gold Fall 2013 collection on the blog. The collection was inspired by psychedelic rock band on a Cosmic Tour and featured slim cut pieces and tailored outerwear. View some of the pieces below and you can read the original post here.