Lo and behold.... after searching high and low I'd managed to find myself some not only rose-cut diamonds but in brown and grey color too! Well, they're for the shop but if I'm good I may get to keep a pair for myself one day. They're about 2.2mm wide, set into a round chubby 4.4mm wide solid silver pebble-like form with some subtle speckly texture to give of dancing light. Lovely they are.