Kate Middleton wears Princess Diana's Engagement Ring

The world's most famous bride-to-be Kate Middleton wears Princess Diana's 18-carat oval sapphire ring. The engagement ring was given to Kate by Prince William last week. The $60,000 sapphire gem is adorned with 14 smaller white diamonds. Wearing something like this will instantly turn any pauper into princess. This 'rock' rocks!

I have my favorite celebrity engagement rings and I'll share them with you.

Scarlett Johansson’s engagement ring given by Ryan Reynolds is a 3 carat classic solitaire diamond ring with a round brilliant cut with side stones that wrap the band. Its estimated cost is $30,000.

Ashlee Simpson's engagement to Pete Wentz scored her a 4-carat square cushion cut diamond set in pave diamonds that costs around $100,000

Jessica Simpson's husband-to-be Eric Johnson purchashed this three-stone engagement ring in ruby and diamonds by Neil Lane for $185,000.

"Jennifer Aniston's antique engagement ring was co-designed By Brad Pitt with designer Silvia Damiani. Shaped to represent a heart with the spiral styling symbolizing eternity. Jen’s ring has been estimated to cost near $500,000.00" - miadonnadiamondblog

Mariah Carey's engagement ring from Nick Cannon is a 17-carat, square emerald-cut pink diamond surrounded by 58 intense pink diamonds and two half-moon diamonds on each side. Cannon worked with Jacob & Co to design this $2.5 million worth stunner.

Credits: Chicks.thediamondstore.co.uk, Glammevine, Ringenvy, Miadonnadiamondblog