Britney Spears’ Engagement Ring: How Much It Costs

 Denise Truscello/WireImage.com

She's so lucky!

Looks like Britney Spears got an engagement ring that will surely give her several platinum records a run for their money!

After Us Weekly exclusively reported that the pop superstar accepted her beau Jason Trawick's marriage proposal Thursday evening, she debuted her blingy sparkler when they celebrated the news (and Trawick’s 40th birthday) in Las Vegas Friday evening.

"I heard that Jason didn't want a giant stone since he wanted to concentrate on the quality and beauty of a platinum setting," jewelry expert Michael O'Connor told Us of the 3-carat diamond Neil Lane design. "The royal treatment of the ring continues all the way around the finger with platinum set diamonds throughout the entire ring. Only platinum will hold all of that diamond work securely and never fade or change color over time."

The estimated price tag for the 30-year-old's new bauble? A whopping $90,000!

Although they've known each other professionally since 2006, the pop superstar and Trawick, 40, (who’s also her former agent) began dating in 2009.

"This is something they've both wanted for a long time," another insider tells Us of the couple's wedding plans. "It's a way to cement their family [with her sons Sean, 6, and Jayden, 5]. They're both extremely happy and can't wait to become man and wife."

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