Here's a pretty thing for acution by Joseph DuMouchelle.
It is made by David Webb of platinum, 18kt yellow gold, sapphire, emerald and diamond, has an oval blue sapphire cabochon weighing approx. 4.50ct and oval emerald cabochon weighing approx. 3.50ct., is signed "Webb 18k-Plat" inside the shank, and accented by approx. 28 round brilliant cut diamonds. There is no word on when it was made, but it breathes 80s in a preppy sort of way.