Credit: Larry Busacca/Getty Images for Time Inc

Yeehaw! Dallas Cowboy Tony Romo wasn't fooling around when he proposed to love Candice Crawford Thursday night during her 24th birthday dinner in Dallas, Tex.

Crawford showed off her enormous new engagement ring in a pic posted at (The Dallas/Fort Worth station first reported the engagement; a rep for Romo, 30, confirmed the news exclusively to Check out a very similar-style platinum and diamond ring from Kirk Kara at left.

Judging from the original pic, jewelry and style expert Michael O'Connor tells Us the bride-to-be's sparkler is "one of the more romantic we've seen in celebrity engagement rings this year."

The ring features an approximate 4-carat center diamond set in platinum "surrounded by a vintage inspired design," O'Connor says. "Tony chose a band with a split platinum shank and micro pave diamonds, a feature that makes the ring more elegant."

Approximate price tag? $80,000, O'Connor tells Us.

Romo, 30, began dating Crawford (a former beauty queen and little sister to Gossip Girl's Chace Crawford) in September 2009, two months after his split with Jessica Simpson. He and Simpson, 30, dated for almost two years. Simpson herself got engaged last month to ex-NFL pro Eric Johnson.