Ok first we never have heard of Engel jewelry, and when we found this we thought is was a Coro Duette. Given that many jewelry companies back then make jewelry not only in their name but also others, it probably was their design. It features the typical closure on the back, which breaks down into a mounting and two clips, or together the lovely brooch. Both round and baguette rhinestones are brilliant and well set in the silver tone metal; we see all stones present. This beauty measures 2 & 1/4" across, each clip is 1 & 1/4" tall.