Up-and-coming celebrities who made their mark on Hollywood this past year rocked cultured-diamond jewelry at the Hollywood Breakthrough Awards on Dec. 9.

Kim Kardashian of Keeping Up With the Kardashians fame wore a Renaissance Diamonds fancy-color cultured-diamond necklace with matching vivid-yellow cultured-diamond drop earrings, while Elizabeth Mitchell of the hit series Lost was presented with a Renaissance Diamonds cultured-diamond pendant in a sunburst design as well as yellow cultured-diamond stud earrings in recognition of her breakthrough achievements.

Neil Koppel, president and chief executive officer of Renaissance Diamonds, said his company is committed to making "eco-friendly" fine jewelry.

"Our cultured-diamond jewelry is an opportunity to make more than just a fashion statement," Koppel said in a media release.

For more information about Renaissance Diamonds, visit the company's Web site, Renaissancediamonds.com.