Rainier initially proposed to Kelly with a simpler ruby and diamond eternity band ... has a 2.5-carat diamond ring, with .75-carat baguette diamonds on the sides, worth $80K (per Royal Central).

customers will have a chance to win a baguette-cut ring set in a gold band in honor of the Super Bowl and Valentine's Day, which fall within one day of each other. The lab-grown diamond will even ...