The trailers for Ang Lee's latest move Lust Caution are full of glamour and intrigue in World War II-era Shanghai. As a jewelry lover one of the things I immediately noticed even in just the brief trailer was the large pink diamond ring worn by the lead actress Tang Wei. Turns out that the ring is a one-of-a-kind 6.1 carat Cartier ring. Cartier is also offering a Lust, Caution LoveCharity bracelet which has a mini 18K gold Love ring on a plum silk cord . It sells for $475 and $100 goes to benefit the Film Foundation which was established by Martin Scorsese to promote the need for film preservation.