 Their appearance was toy-like, cartoonish, or Art Deco, and they featured simple, repetitive motions performed by the doll-like sculptures.No brand names or jeweller's names appeared on the displays; most of them pitched the generic idea of buying diamonds or watches.A typical motion showed technicians working on a "diamond reactor" with dials labelled "fire" and "sparkle," and a plaque noting that "Your diamond will appear much larger in one of our modern mountings."