Stately and magnificent, this 18k White Gold necklace from Cartier's Inde Mysterieuse collection looks like it was plucked straight from the long-lost treasure trove of an ancient monarch. A large purple Amethyst forms the centerpiece of the pendant, while several smaller Diamonds are used to create a floral-style accent above it. Fit for Cleopatra herself, this brilliant piece could turn any ensemble into a hit.