Cheryl Fernandez-Versini had a personal bodyguard to protect the £1 million worth of jewellery she was wearing on 'The X Factor' results show on Sunday night (09.11.14).
The judge had a 35 carat rare Burmese yellow sapphire and diamond ring worth £843,000 on her hand which she paired with a pair of 15 Carat Canary Yellow Diamond Drop Earrings worth £200,000.
Cheryl's jewellery was created by jeweller to the stars Vashi Dominguez - who runs one of the leading UK jewellery brands at vashi.com - from his Extraordinary Collection and loaned to her for the evening and matched her bright yellow body-con dress.
Due to the astonishing value of the pieces, the former Girls Aloud singer had to be accompanied everywhere backstage by a special bodyguard to ensure their safety.
A source told BANG Showbiz: "Wherever Cheryl went, the bodyguard went. Even if she had to nip to the toilet her security wasn't too far away - although he obviously didn't join her in the ladies room. Cheryl didn't mind though as she was so happy to have been loaned the jewellery by Vashi. He gave her the pick of his collection but once she saw the 35 carat ring she wanted to borrow it."
Cheryl - who is joined on the judging panel by Simon Cowell, Mel B and Louis Walsh - also celebrated landing her fifth number one UK single yesterday, with 'I Don't Care' topping the charts.
The 31-year-old pop star is the first British female solo artist to achieve feat.

Holly Willoughby made a surprise appearance on 'This Morning' today (10.11.14).
The 33-year-old TV presenter - who is currently on maternity leave from the ITV show following the birth of her third child in September - paid a visit to her co-host Phillip Schofield and her stand-in Amanda Holden during a cooking segment with TV chef Gino D'Acampo.
Quizzed on how she and new son Chester are getting on, she said: "I'm good. I was so nervous though, I was like, 'Oh my God, can I go on? Can I go on?
"Chester is really good. He's six weeks today - he's here, my mums got him, he's fine."
The blonde beauty - who also has three-year-old daughter Belle and son Harry, five, with husband Dan Baldwin - went on to joke that she'd timed her visit perfectly, as she got to taste the food being prepared by Gino, who has been standing in for her on ITV2 panel show 'Celebrity Juice'.
Holly laughed: "Oh, I hope you've got an extra plate!
"I smelt the food and I thought I've got to come ... I brought the baby in to show you and I've lucked out because you've done a family feast!"

Freddie Mercury stormed out of recording sessions with Michael Jackson because he insisted on bringing his pet chimp to the studio.
The two late music icons came together nearly 30 years ago to duet on 'There Must Be More To Life Than This', an uncompleted track that had been left in a vault to gather dust.
The song - released this week - was eventually discovered by Freddie's Queen bandmates Brian May and Roger Taylor who decided to complete it with the help of producer William Orbit and include it on new compilation LP 'Queen Forever'.
In an upcoming new book by showbiz writer David Wigg - who knew Freddie Mercury well - he reveals: "Freddie got very angry because Michael made Bubbles sit between them and would turn to the chimp between takes and ask, 'Don't you think that was lovely?' Or, 'Do you think we should do that again?' After a few days of this, Freddie just exploded ... 'I'm not performing with a f***ing chimp sitting next to me each night.'
"He phoned his manager and told him to 'get me out of this zoo.' Freddie then flew back to London, leaving the track musically unfinished."
'There Must Be More to Life Than This' was first penned by Freddie in 1981 and he worked on it with Michael in 1984 in Los Angeles.
A version of the song did appear on Freddie's 1985 solo album 'Mr. Bad Guy' in 1985.
Talking about the finished duet, Orbit recently said: "Hearing Michael Jackson's vocals was stirring. So vivid, so cool, and poignant, it was like he was in the studio singing live. With Freddie's vocal solo on the mixing desk, my appreciation for his gift was taken to an even higher level."
Two other previously unheard tracks which appear on 'Queen Forever', Giorgio Moroder collaboration 'Love Kills' and 'Let Me In Your Heart Again' which was written by Brian May.

AC/DC drummer Phil Rudd has been described by his son as "a good guy" who "wouldn't harm anyone" following his recent arrest.
The 60-year-old musician was arrested and charged with attempting to procure murder, making threats to kill and possession of illegal substances (methamphetamine and cannabis) last week following a raid on his New Zealand home, but the murder-related charge was dropped due to lack of evidence.
His son Thomas Rudd has now publicly spoken out in support of father, telling the Daily Mail newspaper: "All I will say is that my dad is a good guy. He's not perfect but wouldn't harm anyone."
A neighbour of the sticksman described him as a "good neighbour ... he's a pretty nice guy. He's very chatty and friendly. But he's pretty private. We don't see or hear anything (from him)."
Rudd still faces charges pertaining to drug possession and threatening to kill and a court ruling yesterday forbidding him from leaving the city of Tauranga or having any contact with any individuals related to the charge.
The 'Rock 'n' Roll Train' hitmaker is due to appear in court again on November 27. If found guilty he could receive a prison sentence up to seven years.
AC/DC - fronted by Brian Johnson - are releasing new album 'Rock or Bust' on December 2 and then intend to go on a world tour.

Adele, Bono, Ed Sheeran and Sam Smith have signed up for Band Aid 30.
The trio will be joined by several other big names from the world of music, including Sinead O'Connor, Ellie Goulding and Coldplay's Chris Martin, to contribute to a recording of 'Do They Know It's Christmas?', which will celebrate 30 years since the original track was released while also raising vital funds to prevent the spread of Ebola.
At a press conference today (10.11.14), Sir Bob Geldof - who is organising the charity recording for a fourth time - said: "It really doesn't matter if you don't like this song, it really doesn't matter if you hate all the artists. What you have to do is buy this thing."
Recording of the single, which the 63-year-old musician joked was "the worst kept secret this year", will begin this weekend (15.11.14), and will include 'X Factor' alumnus Olly Murs and 'Pompeii' hitmakers, Bastille.
Other famous faces who will appear on the track include Jessie Ware, Foals, Underworld, Fuse ODG and Paloma Faith, while acclaimed artist Tracey Emin will provide the cover art.
U2 frontman Bono will also return for Band Aid 30, having featured in the original recording in 1984 alongside Phil Collins, David Bowie, George Michael and Sting.
The announcement comes just days after One Direction were confirmed to be part of the single.
Bob and Ultravox star Midge Ure also confirmed Rita Ora had been on-board for the fourth rendition of the track, but has since had to pull out due to contractual agreements with the BBC linked to her role as a mentor on 'The Voice'.
The single is set to be released on November 17, but Bob revealed the track will not appear on streaming websites until the new year, claiming "I'm a Taylor Swiftian."
It comes after Taylor Swift pulled her albums from music streaming service Spotify.

The Cranberries singer Dolores O'Riordan has been taken to hospital after being arrested this morning (10.11.14).
The 43-year-old star was arrested after allegedly assaulting a female flight attendant and a police officer on an Aer Lingus flight from New York JFK which arrived early this morning in Shannon, County Clare, Ireland.
A spokesman for Aer Lingus is quoted by Irish broadcaster RTE News as saying: "An incident took place on board flight EI110 en route from New York to Shannon today.
"The matter is being investigated by An Garda Síochána. As this is a security matter we will not comment any further."
Following the alleged incident, Dolores was taken to University Hospital Limerick after being medically assessed by a doctor at Shannon Garda Station.
The air hostess was said to have been taken to Mid-Western Regional Hospital but the police officer wasn't thought to have been seriously hurt.
Dolores shot to fame in the 1990s as lead singer of the Irish group, who became a worldwide success, with albums such as 1993's 'Everybody Else Is Doing It, So Why Can't We?' and 1994's 'No Need to Argue', and have sold more than 40 million albums across the globe.
She has three children, son Taylor, 16, and daughters Molly, 13, and nine-year-old Dakota with her husband, former Duran Duran tour manager Don Burton, who she married in 1994.

Usher is in awe of his son's imagination.
The 'OMG' hitmaker loves reading to seven-year-old Usher V and five-year-old Naviyd - his kids with ex-wife Tameka Foster - and is fascinated by how his youngest boy in particular develops his interest in the stories.
He said: "They're just getting to that age where they're bringing me books that they want to read, as opposed to me just reading to them. When they were two or three I could use my imagination to tell them a story, but now, to see their imagination come off the page, or they get inspired by something and they go in the corner and look at the pictures ... that right there is the exciting part.
"They're developing their personalities through what they read. They're so imaginative. Especially Naviyd, more than Usher. Oh my God, he has such an active imagination."
The 36-year-old star particularly enjoys reading scary stories with his sons.
Asked by Vulture.com what they like to read, he said: "Anything Scooby-Doo. I've also really come to appreciate those books with the pen ... Leap Frog! And spooky kid stuff. They love scary books."

Liam Payne gets upset by negative comments on social media.
The One Direction singer wishes web users would think more carefully about what they write and not just assume they won't be seen by the band.
He said: "I think a lot of people forget that there's a person the other side of the computer.
"People just think they're talking to a person that they're never gonna get through to... but we do see things and we're conscious towards it because we're just young lads and we're gonna be conscious in front of all these cameras and whatever else all the time.
"Some people don't mean what they're gonna say and they don't think you're gonna see it I think is the main thing."
However, the 'Steal My Girl' singer feels "lucky" because his girlfriend Sophia Smith refuses to pay attention to any of the negative comments she receives from jealous fans.
Speaking during the 1D Four Hangout live streamed interview yesterday (09.11.14), he added: "I'm quite lucky with Soph because she doesn't pay much attention to it."
Meanwhile, Zayn Malik insists his fiancee Perrie Edwards also doesn't mind the negative comments because the Little Mix singer understands the situation due to her own fame.
He said: "Pez does the same job [as me] so she understands."

Emeli Sandé showed off a full fringe at the MTV EMAs, waving goodbye to her trademark quiff. The 27-year-old 'Next to Me' singer also confirmed on the red carpet that she will be taking part in a revamped version of the Band Aid single 'Do They Know It's Christmas?'.

Ariana Grande stole the show in a cut-out dress and flowing locks as she strutted down the red carpet at the award ceremony in Glasgow. However, the 21-year-old 'Problem' singer wasn't quite as comfortable with her look, admitting that when her hair isn't in her trademark ponytail, she feels completely "naked."

Ozzy Osbourne looked ecstatic as he waved his Global Icon Award around following his win at the MTV EMAs. The 65-year-old musician was honoured at the ceremony with a musical tribute by Slash and Biffy Clyro's Simon Neil.

Nicki Minaj was an unlikely host for Glasgow's star-studded awards show on Sunday (09.11.14), but made sure she was noticed with expletive-ridden speeches and a rap about Scotland. The 31-year-old musician performed a medley of tracks at the event incl...