Ah, those jewels that adorn Hollywood royalty on Oscar night! Where do they come from, and how do they wind up on those famous necks, wrists, and ear lobes?

Well, one source is the Diamond Information Center, which acts as a liaison between the stars and the jewelers. Diamond expert Joan Parker, who has been with the information center for 25 years, visited The Saturday Early Show to explain the process and to show some of the Oscar diamonds.

For occasions like the Academy Awards, a star's stylist will approach the Diamond Information Center with a request for jewelry. Then, the company matches the stylist with a jeweler who shares his or her taste, or the company scouts a variety of stores and presents the stylist with several options.

As soon as nominations for the Academy Awards are announced, the information center is mobbed with requests...