Jessica Biel and Justin Timberlake
Jessica Biel revealed that her vintage-style ring (which is worth an estimated $130,000) was picked by Mr JT. She told InStyle: 'I had no say whatsoever. I don't micromanage. He is fearless in his choices and has a real eye for design. And I'll be honest: He has better taste than I do.'
Jennifer Garner and Ben Affleck
When Ben proposed to Jen (part two), he gave her a 4.5 carat by Harry Winston. Yep, that's the same designer of the pink diamond he gave Ms Lopez in 2002. He upped his game this time however, as although JLo's rock was worth a rumoured $2.5 mil, it wasn't exactly classy.
Halle Berry and Olivier Martinez
Martinez commissioned his Paris neighbour Robert Mazlo to design Halle Berry's impressive 4 carat emerald ring. The designer told People Magazine that the ring symbolises the couple's story, as he said 'The ring is textured and contains codes and symbols which you cannot see … only the person wearing it can. It’s very uncommon. The symbols and codes represent [the couple's] story and only they can interpret it.'
Kate Moss and Jamie Hince
Ready to hear the cutest engagement ring story ever? According to reports Jamie tried to track down Zelda Fitzgerald's original engagement ring to give to Mossy. Although he didn't locate the original, he apparently found sketches of the ring and had a jeweller design a similar one for Ms Moss.
Natalie Portman and Benjamin Millipied
Benjamin designed Natalie's ring with Jamie Wolf, using a recycled platinum ring, a large antique stone and conflict free diamonds. Perfect for the eco-warior.
Katherine Heigl and Josh Kelley
Half of the platinum band of Katherine's Ryan Ryan ring is from her mother's engagement ring. How precious is that?
Miley Cyrus and Liam Hemsworth
Miley Cyrus was engaged at just 19, and her ring is classic Hollywood as it is a 3.5 carat cushion-cut handcrafted ring by tinseltown's favourite designer Neil Lane. He has blinged up many a Hollywood starlet, including Nicole Richie and Rachel Zoe.
Anne Hathaway and Adam Shulman
Anne's six carat bling ring is oh-so-classic. Her rep revealed that 'the ring is a design collaboration between her fiancé Adam Shulman and Kwiat Heritage Jewels."
Katie Holmes and Tom Cruise
Tom Cruise proposed to Katie with a 5 carat oval shaped ring. Tom revealed that he bought the engagement ring just after thier first date.
Heidi Klum and Seal
Heidi is a sucker for a sparkly gold floor sweeping gown, and she clearly applies the same rules to her jewellery. As he engagement ring from Seal had a 10 carat yellow diamond on a gold band.
Nicole Kidman and Keith Urban
Nicoel Kidmaan has a three stone Cartier engagement ring (rumoured to be worth $45,000) and her wedding band is said to be a Cartier eternity band.
Keira Knightley and James Righton
Keira Knightley flashed her engagement ring on a stroll with Klaxons drummer James Righton. US Weekly reported that it is a solid platinum band with a cut solitaire diamond which is aproximately 2 carats. They estimated it is worth $40,000.
Jennifer Lopez and Ben Affleck
Jen might have received four engagement rings (so far), but the pink Harry Winston diamond she received from Ben Affleck in 2002 is by far the glitziest. It was reported she gave it back to Ben when they split.
Rachel Zoe and Rodger Berman
When Rachel gave birth to Skyler she was given a 10 carat Neil Lane diamond ring worth nearly $300,000 (we die). Skyler weighed 6lb 12 oz when born so the rock was more than a carat a pound. Neil Lane said of the diamond: 'I knew she's wanted a cushion cut forever. It was their first baby and she's been working so hard that Rodger wanted to do something very special. Rachel was thrilled and hasn't taken it off since!'
Angelina Jolie and Brad Pitt
Brad Pitt designed Angie's rock with her jeweller Robert Procop who said in a statement "Working closely with Brad Pitt to realise the star's vision for the ring, Robert Procop was able to source a diamond of the finest quality which was then transformed using Pitt's unique designs, cut with distinctive faceting to a shape and size that perfectly suits Angelina's long, slender fingers.”
Blake Lively and Ryan Reynolds
The Lorraine Schwartz rock is oval cut, pink, is reportedly 12 carats and is worth $2 million. Blake is a lucky, lucky lady. The jeweller said in a statement: 'Ryan chose Lorraine Schwartz to help him find a flawless, light pink oval diamond. They worked together to design a custom setting in rose gold and pave diamonds with a nod to deco.'
John Krasinski gave Emily Blunt a 3 carat Neil Lane ring, worth an estimated $100,000.
Emily Blunt and John Krasinski
Gwyneth Paltrow and Chris Martin
Gwyneth Patrow is rarely spotted wearing her Asscher cut diamond. We don't blame her, we'd be scared to wear it too.
Miranda Kerr and Orlando Bloom
A rep at the Diamond Information Center said that Miranda Kerr’s ring has an estimated 3-4 carat oval diamond set on a platinum band.
Jennifer Aniston and Justin Theroux
Justin popped the question to Jen with an eye-popping rock, which she debuted in October on a day out in Sante Fe with Justin. It is rumoured to be $1 million and 10 carats. Brad who?
Kate Middleton and Prince William
William proposed to Kate with his mother Diana's 18 carat saphire and diamond engagement ring on a trip in Kenya. Princess Diana's engagement ring from 1981 has gotta be priceless?
Kim Kardashian and Kris Humphries
The Hump proposed to Kim Kardashian with an emerald cut Lorraine Schwartz ring, which is 20.5 carats in total. It is estimated to be worth two million dollars - that's nearly $30,000 per day of their marriage.
Beyonce and Jay Z
Beyonce's rock from Lorraine Schwartz reportedly cost a stonking $5 million. Speaking of stats (make sure you're sitting down for this) the flawless diamond is rumoured to be 18 carats.
Khloe Kardashian and Lamar Odom
Khloe Kardashian wears a 12.5 carat ring worth $850,000, by Vartan's Fine Jewellery. She was given it just two weeks before she got married.
Victoria and David Beckham
David proposed to Posh with a rather 90s looking marquise cut diamond ring. But this is Victoria Beckham so of course she has upgraded to a bigger rock...
David and Victoria Beckham
Why settle for just one rock when you can have two? VB upgraded her engagement ring to a mega pear shaped diamond.
Reese Witherspoon and Jim Toth
The Legally Blonde actress wears a 4 carat Ashoka diamond by William Goldberg.
Kate Hudson and Matthew Bellamy
In April 2011 Matt proposed with a 9 carat emerald-cut diamond worth approximately $200,000.
Having a diamond ring on your finger is always a little scary - what if it falls down the loo or gets stuck in a grate? But in celebville stars don't just wear a classic gold band with a single diamond. Nope they wear their very own Hope diamond on their wedding finger.
So who wins the award for the most blinding, ostentatious ring ever? Well Jennifer Aniston's diamond is anything but discrete and who could forget JLo's pink dazzler she was given Ben Affleck back in 2002. Beyonce must have a mighty strong index finger to carry the weight of her 18 carat blinder.
The most ridiculous ring in terms of cost per wear goes (of course) to Kim Kardashian. Kris Humphries proposed to her with a Lorraine Schwartz diamond ring which was 20.5 carats in total. It was estimated at two million dollars - which is nearly $30,000 for each day of their 72 day marriage.
Can you guess which rock belongs to who?
But it's not all about the price tag as some celeb engagement rings are sentimental as well as large enough to require their own personal security guard. Katherine Heigl's band used half of her mother's engagement ring and of course Prince Wills proposed to Kate with his mother's saphire.
Kate Moss has one of the best stories behind her ring bling, as apparently Jamie Hince tried to track down Zelda Fitzgerald's original 1920s engagement ring. He didn't track down the diamond, but he found original sketches of the ring and made Mossy her own version. How romantic is that?
Ready to see millions of pounds worth of sparkles? Take a look through the gallery above to find out who has the biggest rocks in Hollywood. *Warning - you may be temporarily blinded