Beyoncé in New York City on April 8.
and Jay-Z may not be talking about their wedding
, but her bling certainly seems to be.
Beyoncé happily flashed a whopping hunk of diamond on her left-hand ring finger Tuesday night at her new husband's concert with Mary J. Blige at Atlanta's Phillips Arena.
Wearing a short black dress and big hoop earrings, the newlywed singer sat in a VIP area with buddy Usher
. The two leapt to their feet to groove hard when Jay-Z launched into his hit "PSA," with its lyrics, "I got the hottest chick in the game wearing my chain."
Usher threw up the diamond Roc sign, while Beyoncé showed off a telltale diamond rock of her own and waved her arms to the beat.
During the show, Beyoncé also relaxed backstage on a plush red couch, sporting shades and singing along to Blige's songs as Jay-Z made last-minute costume changes.
On Monday night, Jay-Z celebrated without his wife – or a wedding ring – at his 40/40 club in Manhattan, where he cheered during the NCAA men's basketball championship game with friends including rapper Tru Life.
An unlit cigar dangling from his hand, Jay-Z was in a good mood as he coyly evaded wedding questions. "I don't know what you're talking about!" he said with a laugh when congratulated by patrons.
For more on the power couple's wedding, check out PEOPLE's latest cover story, on stands this week!Like this story? Click on the Yahoo Buzz! button below to Buzz it up!