Bling!

YG's facing a felony robbery charge for allegedly yanking a dude's chain off his neck and taking off with the diamond-laced pendant ... and we're told there's video evidence too.

The rapper was in a Vegas court Thursday after a warrant was issued for his arrest and he turned himself in. YG was hit with felony robbery and he was released after posting $20k bail.

Vegas police tell us ... the incident went down in late May at the Cosmopolitan around 4 AM, after a man approached YG and asked for a pic but was turned away by his crew. We're told the guy told YG he's not a real celeb ... and casino's surveillance footage shows YG retaliating by yanking a chain off his neck.

We're told the chain fell to the ground, and YG is then seen on video picking up the necklace pendant -- valued somewhere between $3,000 and $9,000 -- before taking off.

We broke the story ... the alleged victim is also suing YG, claiming he had his goons beat him up before he snatched his jewelry. The guy wants at least $250k.

LeSean McCoy called police on Delicia Cordon in July 2017 after an argument over jewelry -- with the NFL star claiming she refused to return several high-end items she had borrowed.

It's all in police reports obtained by TMZ Sports ... which show cops responded to at least 3 incidents at their Georgia home over the past year.

But the most interesting incident took place on July 3, 2017 -- when the NFL star called the Milton Police Dept. to the home after a "domestic dispute" with Cordon.

When cops arrived, they saw McCoy standing in front of a large mound of D's clothes -- and he explained that they had been having issues and had broken up after she accused him of cheating on her.

Then McCoy brought up the issue of jewelry. Here's the quote from the police incident report.

"He went on to advise us that jewelers often times loan them high end jewelry items to wear for events. He stated that Cordon had some of these jewelry items and had not returned them."

"He stated that he has asked her multiple times for them but she has not yet returned them."

According to the police report, McCoy expressed serious concern that Cordon might make false accusations about him.

"He stated that he was trying to be very careful about being around her given the climate of domestic abuse in his profession."

Cops eventually spoke to Cordon. At the time, neither party made any allegations of physical abuse.

The case could be relevant since Cordon claims the assailant who broke into her home and pistol whipped her on July 10, 2018 demanded specific items of jewelry. Cordon told police she believed McCoy was behind the attack.

Justin Bieber and Hailey Baldwin are making sure her engagement ring doesn't slip off her finger because one of their first stops after getting back to NYC was at a jeweler.

The Biebs and Baldwin looked super chill and blissed out Tuesday evening as they waited for Hailey's ring to get resized inside Pristine Jewelers. Gotta say ... Justin's acing the fiance thing so far -- he gave Baldwin a shoulder massage while they were waiting.

She seemed reluctant to even briefly remove the ring. Still no word on the size or cost of her ring -- not that it matters. Hailey and Justin haven't stopped glowing since he popped the question this past weekend in the Bahamas.

We spoke with Avi and Ofir from Prestine who tells us JB also got a white gold ring of his own and picked up a white diamond encrusted Patek Philippe watch.

Justin Bieber got challenged to a dance off by some little kid and the Biebs happily responded ... with his new fiancée, Hailey Baldwin, front and center watching it all go down.

Justin and Hailey kept celebrating their engagement Sunday with a bunch of locals at Nipper's Beach Bar & Grill in the Bahamas. They had already danced their little hearts out on the beach ... but kicked things up a notch with a huge crowd.

Look closely ... Hailey's wearing her massive rock, which she adjusts while holding a drink. Justin's so pumped up after accepting the dance challenge he gets the entire crowd amped up too.

Justin Bieber appears to have spared no expense for Hailey Baldwin's engagement ring ... 'cause that thing is HUGE.

The newly engaged couple was seen hanging out at Nippers Bar & Grill in the Bahamas the day after he proposed to her Saturday night, and she was flashing her new hardware.

Hailey's wearing a fat diamond ring on THAT finger in the open, and we gotta say ... it looks like a hell of a rock. Hard to say exactly how big it is, but there's no question the ring is sizable. They danced their hearts out on the beach in celebration ... so it'd seem she digs it.

We broke the story ... Justin got on bended knee for Hailey in front of guests at the resort they're staying at while vacationing in the Bahamas. Cameras were forbidden during the special moment ... for which, of course, she said yes.

Selena Gomez, meanwhile, doesn't seem to have a care in the world about the news. She's living it up in New York ... on a boat ... laying out in the sun and whatnot.

Porsha Williams tried playing it coy when our camera guy straight-up wanted to know if she and her BF were shopping for engagement rings ... keyword: tried. 'Cause, all signs pointed to them hunting for a rock.

We got the 'Real Housewives of Atlanta' star and her boo after she met with Richie Rich from the Leon Diamond jewelry store in NYC and we had to ask ... was she looking at engagement rings? It's interesting ... Porsha's kept her relationship on the super DL for some time now and only made subtle hints she's in a relationship.

Just a few days ago, reports surfaced outing Porsha's new man as Atlanta businessman Dennis McKinley. She's also been ending her Instagram captions with #DM. And, that's the same guy we saw her holding hands with as she left the jewelry joint.

Where there's smoke ...

Katharine McPhee and David Foster are back in the U.S. after their European vacation and made an interesting first stop after their trip.

The couple -- dressed pretty casually -- was spotted in Tribeca, but reportedly made their way to a jeweler in Midtown Thursday, a few days after getting engaged.

Foster popped the question in Anacapri, Italy and Katharine confirmed the engagement by posting a text exchange where someone described her ring as "beautiful and classic." We also have a photo of her showing it off at dinner earlier this week.

She was wearing a ring on her ring finger Thursday afternoon, so it's possible she was getting it resized ... or maybe they were shopping for Foster.

50 Cent said Floyd Mayweather is a FOOL for snatching up an $18 MILLION diamond watch -- but Paris Hilton tells TMZ Sports ... Fiddy is wrong, she actually likes it!!

"It looks like a watch that I have actually," Paris said at LAX.

Floyd claims he picked up the famous "Billionaire Watch" from a jeweler in Japan -- a watch that contains 239 huge diamonds!!!

50 Cent clowned Floyd for the purchase -- saying, "Man they done found the 1 fool in the world,dumb enough to buy that watch. LOL get the strap."

As for Paris, she defended Mayweather's spending habits, saying -- "It's a lot ... but I think he works very hard, he works for his money and he can buy whatever he wants!"

Forget your Sanyo ... Floyd Mayweather says he just bought a brand new diamond watch -- WITH AN $18 MILLION PRICE TAG!!

"This my new timepiece, it's called 'The Billionaire Watch,'" Floyd says ... "If you don't know about it, google Billionaire Watch."

The watch is super famous -- made by Jacob & Co. back in 2015, it features 239 emerald-cut baguette diamond stones, each weighing up to 3 carats.

Jacob & Co. describes the watch as a unique piece that "truly epitomizes the brand’s passion for breaking boundaries."

"As the tourbillon caliber brings dynamism to its bejeweled enclosure, or the ballet of light of 260 carats of diamonds illuminates its exquisitely revealed heartbeat."

"The Billionaire is a dazzling representation of the courageous and rebellious Jacob & Co. spirit."

Floyd says he bought the watch from a Japanese jeweler named Tadashi Fukushima -- and says he'll never buy any jewelry from anyone else ever again.

Khloe Kardashian's flashing a massive rock on her left ring finger which might have ya thinking she's engaged to Tristan Thompson ... but don't go buying a gift yet.

Khloe and Tristan had dinner Sunday night at BOA Steakhouse on the Sunset Strip ... and from the look of things, it wasn't the most exciting date night. Khloe seemed to be giving Tristan serious side-eye while he looks at something other than her -- maybe his phone or the menu.

But the bling on her hand was a definite bright spot. Khloe's dressed up that finger before, so we're not jumping the gun on engagement news.

Rich the Kid's not letting his recent beatdown by several armed robbers stop him from loading up on more ice ... because ya gotta keep flexin.

The rapper had jewelers Gavriel and Izzy from NYC Luxury make a house call to his L.A. pad this week, and they brought along over $2 mil worth of high-end watches, bracelets and chains.

We're told Rich -- who's still wearing a wrap on his hand from an injury suffered in last week's home invasion robbery -- dropped around $78,000 on a brand new two-tone Cuban link necklace.

Bold move.

We broke the story ... the rapper was hospitalized after masked men with guns entered the home of his GF, Tori Brixx, demanding cash and jewelry and attacked them.

Kim Kardashian West is back in Paris for the first time since her traumatizing 2016 robbery there ... and it's obvious it's still fresh in her mind.

Kim and Kanye were surrounded by their muscle -- and some fans and paps, of course -- on their way to the Louis Vuitton Menswear Spring/Summer show. It's Paris Fashion Week, so it's clear why Kim's there ... but still hanging over her is the petrifying heist.

TMZ broke the story ... Kim feared rape when masked men stormed into her 2-story apartment in October 2016 and zip tied her hands with plastic handcuffs. The masked men also made off with more than $10 million in jewelry. Kim vowed to tone it down ... and she's done that ever since. Notice she's not wearing jewelry.

Pete Davidson and Ariana Grande are battling over who's better at showing off -- Pete proudly parading around his smoking hot fiancée, or Ariana flaunting her massive engagement ring.

Pete and Ariana were arm-in-arm Monday in NYC -- shopping for furniture, btw -- and she made sure to keep her hand at the perfect tilt for photogs. Pretty obvious, she's thrilled with Pete's choice of ring.

TMZ broke the story ... Pete dropped $93k for the 3.03 carat diamond. As they say ... if ya got it, flaunt it -- especially when ya got 3 carats of it!

The Philadelphia Eagles got their diamond-studded Super Bowl rings at a massive party Thursday night with a very special guest performer ... Meek Mill!

The rapper -- along with Rick Ross -- busted out song after song while the players rocked out in the crowd -- a special moment because his "Dreams and Nightmares" song was the team's anthem.

During the set at Noto nightclub, Meek grabbed the mic and told the players, "If I ever had to say I had my best night in prison it was the day the Eagles won the f*cking Super Bowl."

The players loved it -- with guys like Alshon Jeffery, Zach Ertz, Corey Clement, LeGarrette Blount and Torrey Smith having the time of their lives. Lil Uzi Vert was also there!

As for the rings, they're dope -- 10-karat white gold with 219 diamonds and 17 rare green sapphires.

The 127 diamonds on the bezel represent the combined jersey numbers of the three players who touched the football during the Philly Special play -- Corey Clement (30), Trey Burton (88) and Nick Foles (9).

Cool, right?

There's also an underdog mask inscribed on the inside of the ring.

Congrats!!!

Joel McHale is so impressed by how much Pete Davidson spent on Ariana Grande's engagement ring ... he's lobbying for an 'SNL' gig. Jokingly. We think.

We got Joel at the Fortnite Pro-Am tournament near downtown L.A. -- he was paired with Markiplier, for you Fortnite heads. Anyway, we broke the Ariana-Pete engagement news to Joel, and you gotta see his reaction. The $93k price tag for the ring really did blow him away.

Unlike some naysayers, Joel told us the couple's young age -- they're both 24 -- isn't necessarily a bad thing. He's got a great example.

Pete Davidson shelled out nearly $100,000 for the engagement ring on Ariana Grande's finger ... a piece that was custom made for the singer.

Sources close to the couple tell us Davidson picked up the $93,000 VVS1 clarity 3.03 carat diamond set in platinum last month. We're told it was specially made for Ariana and took nearly two weeks to complete.

The piece was commissioned by NYC jeweler Greg Yuna (aka Mr. Flawless).

As we reported ... Pete and Ariana got engaged after only dating a short time. Both had previously been involved in long-term relationships -- Ariana with Mac Miller, and Pete with Larry David's daughter, Cazzie.

Miller was busted for DUI last month, shortly after their split went public ... Ariana tweeted hours after the arrest, saying, "Pls take care of yourself."