BEYONCE FINALLY SHOWS OFF DIAMOND

Pop singing star Beyonce Knowles stunned everyone at Friday night's Fashion Rocks event in New York City with her own fashionable diamond rock. Beyonce showed off the $5 million wedding ring her husband Jay-Z bought her after she became his wife last April. It marked the first time the singer appeared in public with the Lorraine Schwartz gem. According to the jeweler, the huge ring features an 18-carat flawless diamond.Beyonce and Jay-Z have still to publicly confirm they are husband and wife after their highly private nuptials, but the singer's sister, Solange, recently referred to the rapper as her brother-in-law in a television interview. The ring wasn't the only thing that sparkled about Beyonce at the Radio City Music Hall event -- she performed a duet with Justin Timberlake and a tribute to blues singer Etta James, who she'll play in the upcoming movie, "Cadillac Records."She also teamed up with Mariah Carey, Mary J. Blige, Fergie, Miley Cyrus and Rihanna, among others to perform a star-studded cancer awareness anthem, "Just Stand Up," as part of the Stand Up To Cancer telethon, which took place at the same time as Fashion Rocks.