W magazine presents the nine best celebrity engagement rings. Grace Kelly's diamond engagement ring weighed 10.47 carats. Elizabeth Taylor had a sapphire encircled with two rows of diamonds. Princess Diana had a diamond and sapphire ring that now belongs to Kate Middleton. Jennifer Lopez's pink diamond ring cost $2.5 million. Victoria Beckham upgraded her ring 13 times. Beyonce's ring cost $5 million. Amal Clooney's ring is worth $750k. Meghan Markle's featured diamonds from Diana's.