If the royal engagement has left you lusting after sapphires or dreaming of diamonds, we've consulted some of the world's top jewellers to find out exactly how William's choice of engagement ring could affect jewellery trends and where you can pick up a cheaper version of your own royal rock.
Kate and Wills aren’t the only couple getting married this year - which celebrity wedding would you like to attend?
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- Zara Phillips and Mike Tindall
- Jude Law and Sienna Miller
- Natalie Portman and Benjamin Millepied
- Reese Witherspoon and Jim Toth
- Jessica Simpson and Eric Johnson
- Lily Allen and Sam Cooper