EXCLUSIVE: Mariah Carey plans to keep her $10 million engagement ring after being 'blindsided' by James Packer split

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James Packer put a ring on it, and now, Mariah Carey plans to keep it.

After the two called it quits last week, ET has learned that the "#Beautiful" singer wants to keep the 35-carat engagement ring her billionaire fiancé gave her when he proposed back in January.

WATCH: Mariah Carey and Nick Cannon's Divorce Finalized Days Before James Packer Split

According to a source, the two are "currently in discussions" on how they're going to move forward with the breakup, but Carey "is keeping the ring."

Carey, 46, was most recently spotted wearing the $10 million bling, which was custom designed by New York based designer Wilfredo Rosado, while taking her 5-year-old twins, Monroe and Moroccan, to Jessica Biel's restaurant, Au Fudge, last Sunday. During the outing, she had switched the massive sparkler from her left to right hand.

See photos of Mariah Carey and James Packer together:

18 PHOTOS
Mariah Carey and James Packer
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Mariah Carey and James Packer
NEW YORK, NY - MAY 14: Musician Mariah Carey (L) and James Packer attend the 27th Annual GLAAD Media Awards in New York on May 14, 2016 in New York City. (Photo by Dimitrios Kambouris/Getty Images for GLAAD)
LOS ANGELES, CA - MAY 21: Mariah Carey and James Packer are seen on May 21, 2016 in Los Angeles, California. (Photo by SMXRF/Star Max/GC Images)
LOS ANGELES, CA - MAY 21: Mariah Carey and James Packer are seen on May 21, 2016 in Los Angeles, California. (Photo by Bauer-Griffin/GC Images)
NEW YORK, NY - MAY 14: (L-R) Director Lee Daniels, Mariah Carey, and James Packer attend the 27th Annual GLAAD Media Awards in New York on May 14, 2016 in New York City. (Photo by Dimitrios Kambouris/Getty Images for GLAAD)
LOS ANGELES, CA - JANUARY 28: (L-R) Mariah Carey and James Packer attend the 2016 G'Day Los Angeles Gala at Vibiana on January 28, 2016 in Los Angeles, California. (Photo by Jonathan Leibson/Getty Images)
LOS ANGELES, CA - JANUARY 28: James Packer, Mariah Carey and Member of the Australian House of Representatives Julie Bishop attend the G'Day USA 2016 Black Tie Gala at Vibiana on January 28, 2016 in Los Angeles, California. (Photo by John Sciulli/Getty Images for G'day USA Gala)
LOS ANGELES, CA - JANUARY 28: James Packer and Mariah Carey arrives at the 2016 G'Day Los Angeles Gala at Vibiana on January 28, 2016 in Los Angeles, California. (Photo by Steve Granitz/WireImage)
MACAU - OCTOBER 27: (EUROPE AND AUSTRALASIA OUT) (L-R) American singer Mariah Carey and Australian businessman James Packer arrive on the red carpet for the opening of Studio City casino in Macau, China. (Photo by Jonathan Ng/Newspix/Getty Images)
James Packer, co-chairman of Melco Crown Entertainment Ltd., right, and singer Mariah Carey stand for photographs at the red carpet event prior to the opening ceremony of Studio City casino resort, developed by Melco Crown Entertainment Ltd., in Macau, China, on Tuesday, Oct. 27, 2015. Studio City is the latest test of the former Portuguese colony's ability to attract visitors wanting to play on more than gaming tables and slot machines. Photographer: Justin Chin/Bloomberg via Getty Images
NEW YORK, NY - SEPTEMBER 21: Mariah Carey and James Packer attend 'The Intern' New York Premiere at Ziegfeld Theater on September 21, 2015 in New York City. (Photo by Jamie McCarthy/WireImage)
NEW YORK, NY - SEPTEMBER 21: Mariah Carey and James Packer attend 'The Intern' New York Premiere at Ziegfeld Theater on September 21, 2015 in New York City. (Photo by Dimitrios Kambouris/Getty Images)
PORTOFINO, ITALY - JUNE 26: Mariah Carey And James Packer are seen on June 26, 2015 in Portofino, . (Photo by Photopix/GC Images)
PORTOFINO, ITALY - JUNE 26: Mariah Carey and Kerry Stokes are seen on June 26, 2015 in Portofino, . (Photo by Photopix/GC Images)
PORTOFINO, ITALY - JUNE 26: Mariah Carey, James Packer and Kerry Stokes are seen on June 26, 2015 in Portofino, . (Photo by Photopix/GC Images)
PORTOFINO, ITALY - JUNE 26: Mariah Carey And James Packer are seen on June 26, 2015 in Portofino, . (Photo by Photopix/GC Images)
PORTOFINO, ITALY - JUNE 26: Mariah Carey And James Packer are seen on June 26, 2015 in Portofino, . (Photo by Photopix/GC Images)
PORTOFINO, ITALY - JUNE 26: Mariah Carey And James Packer are seen on June 26, 2015 in Portofino, . (Photo by Photopix/GC Images)
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One night earlier, however, she wasn't wearing the ring at all while enjoying a dinner with pals at celeb hot spot Catch LA.

The source also revealed that Packer and Carey are "discussing the house" in Calabasas, California. After Packer asked her to leave the rental home, Carey was initially forced to live at the Beverly Hills Hotel for a couple of weeks. This was "completely out of character" for the 49-year-old Australian businessman, the source added. ET confirmed in January that Carey and Packer were paying around $250,000 a month (or $3 million a year) on the lease for the 18,000 square-foot mansion.

As for reports that Carey's manager and friend, Stella Bulochnikov, is the reason for the split? The source tells ET that is simply not true. "James never had issues with Stella. Stella really cared for James," the source explained. "She always had his best interest at heart. They were really close, like one big traveling family. The break up was for other reasons."

Carey threw her own shade at Australian tabloid Woman's Day via Instagram on Sunday, seemingly slamming their latest report about Bulochnikov. She posted a selfie of the two and captioned it, "#realfriends who don't read Woman's Day #wedontknowyou. We love you #Australianlambs."

#realfriends who don't read Woman's Day #wedontknowyou We love you #Australianlambs 😘 @stellabulochnikov

A post shared by Mariah Carey (@mariahcarey) on

WATCH: Mariah Carey and James Packer 'Very Unlikely' to Work Things Out

Other reports claim that Packer left Carey after he discovered she was cheating on him with her longtime backup dancer, Bryan Tanaka. The source tells ET that is also not true.

WATCH: Meet Bryan Tanaka, Mariah Carey's Sexy Backup Dancer in the Middle of Her Split From James Packer

"She is not into him in that way," the source said, confirming Carey and Tanaka are not dating and have been close pals for a while. "But he's fun and great company." Earlier this week, an additional source confirmed the reports were untrue, telling ET, "[Bryan] is not a reason for any issues between Mariah and James. It's no secret that Mariah loves having a big entourage around."

See more photos of Mariah Carey through the years:

18 PHOTOS
Mariah Carey through the years
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Mariah Carey through the years
NEW YORK, NY - FEBRUARY 12: Singer Mariah Carey and Nick Cannon attend MTV First: Mariah Carey's 'You're Mine (Eternal)' music video world premiere at MTV Studios on February 12, 2014 in New York City. (Photo by Larry Busacca/Getty Images)
LOS ANGELES, CA - JANUARY 18: Mariah Carey and Nick Cannon (R) arrive at the 20th Annual Screen Actors Guild Awards at the Shrine Auditorium on January 18, 2014 in Los Angeles, California. (Photo by Dan MacMedan/WireImage)
NEW YORK, NY - AUGUST 05: Nick Cannon (L) and Mariah Carey attend Lee Daniels' 'The Butler' New York premiere, hosted by TWC, DeLeon Tequila and Samsung Galaxy on August 5, 2013 in New York City. (Photo by Kevin Mazur/Getty Images for Samsung)
HOLLYWOOD, CA - NOVEMBER 17: TeenNick Chairman and HALO Awards host Nick Cannon and singer Mariah Carey attend Nickelodeon's 2012 TeenNick HALO Awards at Hollywood Palladium on November 17, 2012 in Hollywood, California. The show premieres on Monday, November 19th, 8:00p.m. (ET) on Nick at Nite. (Photo by Charley Gallay/Getty Images For Nickelodeon)
NEW YORK, NY - DECEMBER 15: Mariah Carey leaves the Beacon Theater on December 15, 2014 in New York City. (Photo by James Devaney/GC Images)
LOS ANGELES, CA - MARCH 14: Mariah Carey (L) and actor Jussie Smollett attend the Human Rights Campaign Los Angeles Gala 2015 at JW Marriott Los Angeles at L.A. LIVE on March 14, 2015 in Los Angeles, California. (Photo by Jason Kempin/Getty Images for Human Rights Campaign)
NEW YORK, NY - DECEMBER 03: Mariah Carey performs at the 82nd Annual Rockefeller Christmas Tree Lighting Ceremony at Rockefeller Center on December 3, 2014 in New York City. (Photo by James Devaney/WireImage)
NEW YORK, NY - DECEMBER 03: Singer Mariah Carey performs at the 82nd Annual Rockefeller Center Christmas Tree Lighting on December 3, 2014 in New York City. (Photo by Paul Zimmerman/WireImage)
SHANGHAI, CHINA - OCTOBER 19: Singer Mariah Carey performs live during her 2014 China Tour on October 19, 2014 in Shanghai, China. (Photo by ChinaFotoPress/ChinaFotoPress via Getty Images)
NEW YORK NY - AUGUST 26: Mariah Carey sighting on August 26, 2014 in New York City. (Photo by Josiah Kamau/BuzzFoto/FilmMagic)
HOLLYWOOD, CA - JULY 23: Singer Mariah Carey and actor Dwayne Johnson attend the after party for the premiere of Paramount Pictures' 'Hercules' at the Roosevelt Hotel on July 23, 2014 in Hollywood, California. (Photo by Alberto E. Rodriguez/WireImage)
CAP D'ANTIBES, FRANCE - JUNE 17: Mariah Carey performs during Clear Channel Media And Entertainment And MediaLink Dinner at Hotel du Cap-Eden-Roc on June 17, 2014 in Cap d'Antibes, France. (Photo by Tony Barson/Getty Images for Clear Channel)
NEW YORK, NY - JUNE 09: Singer Mariah Carey announces the launch of her Go N'Syde bottle 'Butterfly' at the Saint Regis Hotel on June 9, 2014 in New York City. (Photo by Andrew H. Walker/Getty Images)
NEW YORK, NY - MAY 29: Singer Mariah Carey attends the 2014 Fresh Air Fund Honoring Our American Hero at Pier Sixty at Chelsea Piers on May 29, 2014 in New York City. (Photo by Monica Schipper/FilmMagic)
Mariah Carey performs during the World Music Awards at Monte Carlo Sporting Club, on May 27, 2014 in Monaco.  (Photo credit: VALERY HACHE/AFP/Getty Images)
TODAY -- Pictured: Mariah Carey appears on NBC News' 'Today' show -- (Photo by: Peter Kramer/NBC/NBC NewsWire via Getty Images)
here's the cover of my new album #1 To Infinity! Pre-order tomorrow @ 10am ET on http://t.co/pJ1014UBpg #1toInfinity http://t.co/ffO32ha7f9
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ET has confirmed that Carey and Packer split following a fight they had during their vacation in Greece in September. "They were so happy," the source said of Carey and Packer's romance on Tuesday. "Mariah was a source of love for James."

Since then, things haven't been easy for Carey, despite her recent outings. According to a report from E! News, Carey was forced to cancel three Latin America stops on her Sweet Sweet Fantasy Tour last week, citing promoter negligence. She's still scheduled to perform in Mexico City and Monterrey later this month, however.

Carey canceled the shows because she was "emotionally distressed" by the sudden change and breakdown of her relationship with Packer, the source confirmed to ET, also revealing that Packer and Carey haven't spoken since their vacation.

Carey was actually "blindsided," the source added, when news broke of her split. She had intended to release a joint statement with Packer, and maintain an amicable relationship with her now ex.

WATCH: Mariah Carey 'Traumatized' Over James Packer Split


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