Bling!

Janelle Pierzina didn't last long on this season of 'Big Brother,' but boy did she cash in -- selling a necklace she wore on the show for a small fortune, before putting that dough to good use.

The "Big Brother All-Stars" contestant wore a gold-plated "Janelle" necklace this season, and while she was the third houseguest voted out ... that necklace is now a sweet silver lining.

Janelle decided to sell it on eBay ... and it went for a whopping $18,300!!!

But, get this, Janelle -- who made the top 3 on "Big Brother 7 All-Stars" in 2006 -- decided to donate the entire proceeds to Give Kids The World Village ... an 84-acre village in Central Florida that offers weeklong vacations to children with critical illnesses and their families.

The trips come at zero cost to the families, thanks to donations like Janelle's.

Here's one more thing to add to your "This Can't Be Happening 2020" f***-it list -- folks are sliding into DMs for some lovin' ... but not for booty calls, more so marry-me-buys.

It's true ... with pretty much all of us being quarantined and hesitant and/or prohibited from going into shops these days, love birds are starting to flock to the digital space to find their engagement rings -- especially on IG and TikTok, which is proving to be oh so fruitful.

Take The Clear Cut, for example -- a huge company that's shifted to social media to facilitate sales, and we gotta say ... they're kinda genius, 'cause the numbers are jumping.

TCC's co-founder, Kyle Simon, tells TMZ that they've seen a whopping 330% increase in revenue over the past few months ... ever since they started posting their engagement ring selection on the 'Gram and TikTok, which we're told they get hit up about directly now.

Yes ... that means customers are literally sliding into their DMs to ask about specific items they've seen and wanna buy. From there, Simon and co. take them to the next phase.

Clear Cut has a huge product line, but we're told engagement rings specifically are flying off their digital shelves faster than they can stock 'em ... and that the most expensive ones they've agreed to sell via social media ran about $70k. On average, they're flipping $20k rocks.

Hey, nobody said getting married was cheap! Anyway, the point is ... CCJ is now doing 80% of their business on Instagram, and siphoning traffic from their TikTok account too. It's wild.

As for why this is happening -- especially the pricier splurges we're told they're experiencing -- Simon says people's budgets have changed ... no more forking out an arm and a leg for venues, honeymoons or anything else uber expensive (at least not for now) ... so more people are spending that extra dough on the ring they wanna put on someone's finger.

Win-win!!!

THE DISRESPECT IS REAL!!

Cam Newton says Miami Dolphins players tried to snatch the chain off his neck after his Patriots won on Sunday ... and it's all on video.

The New England QB was wrapping up a 21-10 victory at Gillette Stadium in Foxborough when cameras showed several Dolphins players jawing at Cam.

At one point, a hand reaches into the camera frame and tugs violently at Cam's neck -- it looks like the chain was snapped, but Cam managed to save it.

Eventually, Cam's teammates stepped in and separated the players.

The QB changed into his snazzy yellow outfit and talked about the incident after the game.

"I still got my chain," Cam said with a smile ... "I got two of 'em. So you could see. It was disrespect, they was reaching for my chain, though."

He continued, "I think that kind of got under my skin. But yeah, through it all, man ... listen -- I do not want nothing to be taken away from a great team game that we did have. And I don't want to be selfish to kind of focus or dwell on that."

"I think for us as a team, or me personally -- a lot of tempers can flare. And I was just teasing with Coach, just letting him know that the College Park almost came out in me."

Later on, Cam posted on social media about the incident -- saying, "Tried to snatch my chain and the game ... too bad I got both!"

Two Dolphins players responded.

Miami defensive end Shaq Lawson wrote, "We don’t won’t that weak ass chain."

And defensive tackle Raekwon Davis added, "Man ain’t nobody want your fake ass chains shit was weak anyway."

WHAT IS GOING ON HERE??!

Soccer superstar Jerome Boateng has a LOT to celebrate -- he just won the Champions League AND turned 32 ... so naturally, some diamonds are in order!!!

TMZ Sports has learned ... the Bayern Munich defender wanted to commemorate his recent accomplishments with some one-of-a-kind ice, so he hit up his go-to-guy, Gabriel The Jeweler to make him a personal gift.

The finished product is incredible -- a massive link chain made of 110-carat VVS diamonds and white gold ... and we're told it's valued at a solid $200k (though unclear exactly how much Boateng paid for it).

The chain has smaller diamonds on the outside and larger stones in the middle to really make the thing pop.

Boateng celebrated his special day on Thursday ... just a little over a week after beating Paris Saint-Germain in the UEFA Champions League Final.

Of course, Boateng came to Gabriel for a $350k jewelry spree of watches and chains last year ... and we're sure this won't be the last, either.

Patrick Mahomes wasn't the only one in his household to get a massive ring on Tuesday ... the superstar QB just proposed to his longtime GF, Brittany Matthews, with a diamond that's bigger than her knuckle!!!

Mahomes surprised his lady with a floral arrangement and bright signs at Arrowhead Stadium in Kansas City after getting his Super Bowl ring ... and Brittany's ring might be even more impressive.

Since 24-year-old Mahomes just signed the fattest contract in NFL history -- he signed a $503 MILLION extension -- it shouldn't come as a surprise that he splurged on the jewelry.

Unclear on how much he paid for it, but by the looks of it ... it wasn't cheap.

Of course, the couple has been together since their high school days ... and have been pretty much inseparable ever since.

25-year-old Matthews -- a pro fitness trainer -- has been one of Mahomes' biggest supporters since day one and definitely made sure fans heard her cheers all throughout the Chiefs' Super Bowl run this past season.

Speaking of ... Mahomes and his Kansas City Chiefs teammates finally got their championship rings for the 2019 season just before the proposal ... and they're pretty spectacular.

The champs held a special social-distanced celebration on the Arrowhead Stadium field on Tuesday ... receiving their rings for their Super Bowl LIV win over the San Francisco 49ers.

The rings -- made by Jostens -- feature the Chiefs logo (made of 60 diamonds) and 2 Lombardi trophies (made with marquise-cut diamonds) on the top ... and includes 16 rubies to signify 10 AFC West Division titles and 6 playoff appearances under head coach Andy Reid.

There are also 50 diamonds surrounding the design, which represent the 50 years since the team's first Super Bowl title.

The sides feature the SBLIV logo and player names and numbers -- and even "142.2" to honor Arrowhead's record-setting decibel rating.

The inside of the rings are just as special -- they feature the logos and scores of all KC's games throughout the playoffs ... and each recipient's autograph.

The team captured the moment Mahomes put his ring on for the first time ... and you could see the dude's smile pouring out from behind his mask!!

Look out, NFL -- these guys look like they're ready for another.

Jack Harlow takes care of his own -- and by that, we mean he's willing to spend an arm and leg to ice out his entourage, and make it look like they just walked off with the Lombardi Trophy.

The Louisville rapper -- who performed at the VMAs Sunday -- was flaunting a set of 8 rings he and his crew (AKA, Private Garden) were rocking around town ahead of and during the show. They're like championship rings -- NBA or NFL-esque -- and they look pretty sweet.

Turns out, they're more than just nice looking ... they're completely loaded with precious stones that ended up costing well over a hundred grand. Teamwork makes the dream work!

Celebrity jeweler Alex Moss -- who commissioned the custom pieces for Jack and co. -- tells TMZ the rings altogether are valued at about $110k, and that's because they're laced with VVS diamonds and 14k gold, with each ring weighing in at 55 grams.

We're told the rings have the Private Garden members' names etched in plus their 502 area code. Of course, Jack's ring is slightly more blinged-out -- he is the leader, after all.

Alex tells us he met Jack a couple years ago in the studio when he was first coming up, but just got hit up for this job a few months ago.

What does a dude nicknamed "Big Ticket" get for a chain??

How about A BIG ASS TICKET!!

TMZ Sports has learned ... New York Jets rookie Mekhi Becton is the proud new owner of a piece that is as big as his 6'7", 360-lb. frame ... copping a huge pendant in honor of his awesome moniker.

We're told Becton hit up famous jeweler Jason of Beverly Hills for the fancy jewelry ... which is made with more than a kilo of gold and 120 carats of flawless white diamonds.

So what's a piece like this worth?? We're told it's valued at a whopping $400k. Now that's an expensive ticket!!

Of course, the rookies are packin' on the ice before the season -- as we previously reported, Cincinnati Bengals first overall pick Joe Burrow just got his diamond #9 chain.

Saquon Barkley loves his personal Nike logo so much, he decided to get the thing decked out in a brand new baller chain ... and man, does this thing shine!!!

TMZ Sports has learned ... the New York Giants superstar running back wanted to treat himself before the start of the new season ... so he hit up his go-to guy, celeb jeweler Leo Frost, to whip up a diamond copy of his signature bolt emblem.

We're told the piece is made up of 18-karat white gold and VVS diamonds ... which means it's super high quality.

Of course, you've seen Frost's work in the past -- dude's done awesome chains for Joe Burrow, Henry Ruggs, Justin Jefferson, Errol Spence, Jr. and more.

Cincinnati Bengals rookie quarterback Joe Burrow just got himself an amazing welcome-to-the-NFL gift ... a diamond chain of his jersey number!!

TMZ Sports has learned ... the Heisman Trophy winner wanted to do something special after inking his massive, $36 million rookie deal, so he hit up celeb jeweler Leo Frost to whip up the one-of-a-kind piece.

We're told the awesome #9 pendant is made of 18k white gold and VVS diamonds ... sitting on an 18k white gold prong-set Cuban chain with VVS diamonds.

In other words, the rook's got taste!!

For those who paid close attention to our pre-draft jewelry roundup back in February, this should come as no surprise. As Leo told Burrow at the time, "After the draft, I'm thinking we make this a fat ass piece for you, #9? A fat #9."

Leo delivered on his promise ... flying to Cincinnati this week to hand over the final product ... and Joe loved it!!

It's been one crazy year for the Ohio boy -- he won a natty, won the Heisman, helped raise $500k for his hometown food bank, and went #1 overall in the Draft.

Fetty Wap's estranged wife wants possession of the rock he slipped on her finger when he proposed, or a fat stack of cash ... but Fetty's saying she's outta luck, 'cause he never owned it.

Leandra Gonzalez filed docs asking a judge to order Fetty to turn over the $60k engagement ring from their failed marriage.

If he doesn't produce the rock, she claims he owes her $37,000 -- the appraised value of the engagement ring. Leandra's arguing it's hers to keep because they went through with the marriage, tying the knot August 3, 2019, in Toronto.

Under the law that's called a "gift in contemplation of marriage" ... and since they said, "I do," she's saying she will take that ring -- but Fetty says there's a catch here.

Fetty's position is he never owned the ring outright when he proposed. He claims he bought the ring on consignment from the jeweler and never ended up paying for it. A few months after the marriage crumbled, Fetty says he snapped up the ring and gave it back to the jeweler.

He is willing to negotiate with Leandra, a little. In docs, the Jersey rapper offers a straight-up trade ... the jeweler keeps the diamond ring, and he will give Leandra HIS wedding band.

Luke Gulbranson -- who stirred up drama on the Bravo reality series "Summer House" -- is making the most of a his failed engagement, and helping a great cause in the process.

Luke partnered up with the folks over at IDoNowIDont.com -- the name says it all, really -- to sell an engagement ring he bought for an ex-GF before he was on the show. Fans know he brought up that 3-year relationship and the engagement ring frequently ... and it's kinda why things never took off Hannah Berner in the house.

He also talked about wanting to get rid of the ring, and it's finally happening. The Tiffany & Co. round solitaire diamond is just under 1 carat, and set in 18k white and yellow gold. It retails for $11,500 but, get this ... the starting bid at IDoNowIDont starts at $5,000. Potential bargain!!!

We're told Luke and the jewelry site will donate a percentage of the proceeds to the Leukemia & Lymphoma Society, a non-profit that's been dedicated to fighting blood cancer since 1949.

So, why L&LS? Luke's mother is currently battling Leukemia and he wants to share his gratitude to the group and its incredible work around the world.

Congrats are in order for Conor McGregor and Dee Devlin -- the UFC superstar popped the question to his longtime GF ... and she said YES!!!

The couple -- who have been together for more than a decade -- made the news official on Saturday ... showing off a MASSIVE engagement ring.

The fighter posted about dropping to one knee before Devlin's 33rd birthday, which is August 9 ... but hints it may have happened around his birthday last month.

"What a birthday, my future wife !" Conor captioned his post on Instagram.

McGregor and Devlin have 2 children together -- 3-year-old Conor Jr. and almost 2-year-old Croia.

It's been an eventful 2020 for Conor ... he kicked it off by beating Cowboy Cerrone at UFC 246 ... and retired from MMA (for the third time) in June.

Conor and Dee have spent their time traveling all over the globe ever since ... including a lavish getaway in France.

Jonathan Cheban -- AKA the "Foodgod" -- claims he had a gun pointed at him this weekend ... and now, says he's out hundreds of thousands after a crook made off with his bling.

Law enforcement sources tell us, Kim Kardashian's BFF said he was robbed at gunpoint Sunday night in Englewood Cliffs, New Jersey, where he was hanging with his mom and friend. We're told Jon and his ma were at a mall earlier in the day, and afterward ... rolled up to his pal's place.

We're told all three of them were out front in the driveway, when a young man walked up and asked for the time. Our sources say Jonathan felt something was off and told everyone to head inside, but by then ... we're told the dude pulled out a gun and was on them.

Cheban told cops the perp moved the group between two cars, to trap them ... and then pointed the gun right at Jonathan's mother's head. We're told Jonathan told the guy to take anything he wanted and the guy ended up taking Jon's Richard Mille watch, worth about $250k.

BTW, we're also told a second gunman was on the scene -- a larger man who was standing watch. Eventually, neighbors heard the commotion and came out to see what was going on -- which scared off the guys, whom we're told made off together on foot.

We're told cops were called and Jonathan is supposed to go in and help with a sketch of the suspects -- we should note, our sources say neither of these fellas had masks on.

It's interesting ... Jon's best friend, Kim Kardashian, rarely wears expensive jewelry anymore after she was robbed at gunpoint in Paris.

All eyez will be on Drake with his new twin Tupac Jesus pendants.

Mr. OVO is the new owner of what soon will become 2 of America's most wanted ... these Tupac pendants dripping with diamonds and gold. The rapper commissioned the celeb jeweler, Jason of Beverly Hills, to pull off the twin pendants depicting Pac with white and yellow diamond crowns of thorns.

Each pendant comes with a diamond chain with a total of approximately 70 carats of flawless white and yellow diamonds, plus ... over a HALF KILO of gold in total. Total price for each piece was $300k!!!

We're told Jason and his crew spent about 5 weeks completing the Pac-Jesus pieces. Drake initially came to Jason with an idea about what he wanted ... and they worked together to come up with the final tribute.

If Demi Lovato's engagement ring looked expensive, that's only because it's worth more than $2 million, and comes with some razzle-dazzle too ... TMZ has learned.

Sources with knowledge tell us ... Demi's ring would cost the average Joe off the street anywhere between $2.5 million and $5 million -- and that's due to the fact that it's a very special cut from a very well-regarded celebrity jeweler in Hollywood ... Peter Marco.

We're told Demi's diamond is an emerald cut that was hand set in platinum, and flanked on all sides by smaller (only relatively) trapezoid-shaped diamonds designs. All told, our sources say the rock comes in at well over 10 carats ... maybe even as much 20!!! No one's spilling the exact weight.

We're told Demi's fiance, Max Ehrich, spent a lot of time to make sure the design was unique -- namely, he really wanted the elongated stone for Demi. We're told he and Marco went back and forth with different side stones and angles until the ring was just right.

Their engagement came after just a few months of dating ... albeit quarantine-dating. Demi and Max first got together in March, and they've been quarantining/vacationing all over Cali since then.

After Max put a ring on it ... Demi said, "I knew I loved you the moment I met you," adding, "I’m ecstatic to start a family and life with you. I love you forever my baby. My partner. Here’s to our future!!!!"

Ellen DeGeneres and Portia de Rossi were inside their Montecito mansion when it was burglarized, but the thief still managed to get in and out undetected ... so they've turned the place into a fortress.

TMZ broke the story ... the break-in went down on July 4, and now sources with direct knowledge of the investigation tell us the couple was home. Luckily, they weren't harmed -- it's unclear if they had any contact with the suspect or suspects, who made off with jewelry.

We're told the point of entry for the burglary was a back door, and no one was captured on surveillance video -- however, Ellen and Portia are making sure that never happens again.

Our sources say they made a slew of security improvements immediately after the break-in -- which include hiring a new security company, installing laser sensors and cameras around the entire property and hiring armed patrol guards.

As we first reported ... Santa Barbara County Sheriff's Office said the crooks made off with some high-value jewelry and watches, and appear to have targeted Ellen's place due to her celeb status.

It's unclear if the break-in's related to other celeb burglaries in the greater L.A. area. The Sheriff's Office says it's working with other law enforcement agencies to investigate.