Bling!

Bella Hadid's rocking a ring on the traditional wedding ring finger ... but she and The Weeknd haven't gotten THAT traditional just yet.

When the couple rolled out of their London hotel Monday evening, photogs took notice of the golden piece Bella was sporting. Rumors immediately flew that Weeknd had popped the question, but hold your congratulations.

Bella's rep tells us there is NO engagement. They've only been together for about 10 months, so it would've been a pretty quick move on Weeknd's part.

Sometimes a ring is just a ring.

We now know how Kylie Jenner got her new grill ... it was a ridiculously expensive present from her boyfriend.

We found out Tyga dropped $15,000 at Johnny Dang & Co. for the 18k gold mouthpiece. All of the diamonds are invisibly set.

Turns out Johnny Dang is in high demand ... Big Sean, Travis Scott, Katy Perry and a bunch of other celebs have used his company to bling out their mouths.

It looks like the grill was a Valentine's Day present, though we can't be certain. Whatever the occasion, now she has a grill, a bunch of PUMAs and the right to rock Adidas.

Kanye West wants to make something perfectly clear ... people in massive debt don't sip champagne in super expensive jewelry stores while eyeing ridiculously pricey watches.

Check out the pics we got inside Jacob & Co. Monday night in NYC. The store is known for watches that will set you back the price of a small house.

We don't know what Kanye bought, but he's clearly making a point that he's still flush with cash and not $53 million in debt.

"Mob Wives" star Ramona Rizzo can't get $154,000 worth of jewelry back from the feds because her lawyer's an "incompetent" idiot ... according to the lawsuit she just filed.

Rizzo says federal agents were gunning for her bf Joseph Sclafani in 2011 when they raided their home and took 42 pieces of her jewelry. Rizzo insists all of her stuff was legally obtained and the feds have no reason to hold it.

She hired Tim Parlatore to help her get the goods back, but says he bungled the mission by turning in paperwork late, and failing to tell her when the feds requested documentation to prove the jewelry wasn't ill gotten.

Rizzo says she could have recovered "a significant portion" of the jewelry had she known.

She's suing Parlatore for the $154k value of her jewelry, plus damages for the "sentimental" loss. BTW ... Sclafani eventually got 15 years for dealing drugs.

When Fetty Wap reps his crew, he reps 'em hard ... as in a brand new $70,000 diamond and gold chain hard.

We found out Fetty commissioned Elliot Avianne from Avianne & Co. jewelers in NYC to make a custom RGF Island emblazoned medallion. It's held together by 14 carat gold Cuban links blanketed with 35 carats of diamonds!

Fetty picked up the piece this week and owner Joe Avianne says the "RGF Island" is a reference to the rapper's single from his self titled debut album and his label.

If you ain't beefin' bout the money, then what's the problem?

Here's Floyd Mayweather out in Milan ...rocking the insanely expensive diamond necklace he bought back in December -- while surrounded by his massive security team.

As we previously reported, Floyd bought the piece on a crazy end-of-the-year jewelry shopping spree -- dropping between $10 and $15 mil for the necklace and a matching diamond ring.

We're told the chain he's wearing in the pic is valued at $3 million -- and the watch is a special diamond Audemars Piguet time piece worth $1.3 million.

#ItsGoodToBeRich

Meek Mill dropped $68,000 over the weekend on a Rolex ... which might become an antique before he's able to wear it, because they don't allow fancy watches in the slammer.

Meek bought the piece from Joe the Jeweler aka "Shyne." It's a custom-made Presidential Rolex with 23 carats of white round diamonds.

Here's the problem ... Meek has a hearing Friday in his probation violation case. You'll recall he left the state of Pennsylvania without permission. There are also allegations he tried to cheat a drug test. The judge could send Meek to prison for the violation.

Meek might need a fortified safety deposit box for his collection.

Kris Jenner is way too proud about her #ProudMama ... according to the jeweler who's one step closer to launching a full-scale legal war over the hashtag.

TMZ broke the story ... Jenny Present, who owns a jewelry company and the trademarked phrase "Proud Mama," issued a warning to Jenner when the momager attempted to get her own trademark.

Present says Kris hasn't backed down, so she's just fired off a cease and desist letter to the momager's company. Tensions are definitely rising since Kris recently announced she's doing her own jewelry collection.

Present's letter demands Jenner stop using #ProudMama on all promotional platforms.

Mariah Carey flashed her giant engagement sparkler Thursday night in L.A. for all to see.

The black tie event was the first time Mariah and James Packer were photographed together since he popped the question.

In case you're wondering ... 35 carats and more than the rest of us will make in our lives.

Treat Yo'Self!!!!

New Orleans Saints defensive end Cameron Jordan decided to reward himself this year after racking up 10 sacks on the field ... and his gift to himself is pretty sick.

Check out the $35,000 gold chain Jordan picked up from Avianne & Co. in NYC -- a 14 karat yellow gold chain that weighs in at 1 kilo!!

We spoke with Joe Avianne who tells us, "Cameron wanted to buy himself a fat gold chain to celebrate his 10 sacks this season ... as soon as I showed him that piece he said he had to get it."

TREAT. YO. SELF!!!!!

Miley Cyrus dropped a clue things are not only back on with former fiance Liam Hemsworth ... they might be eyeing the altar.

Miley arrived at JFK Sunday wearing what looks very much like the engagement ring she got from Liam back in the day.

The two split in 2013, but they've been hanging out lately and it looks like it's back on ... possibly in a big way.

WWE Diva Tammy Sytch might soon be free of the Hall of Fame ring she's auctioning off ... a bidder's come forward with a sweet 6-figure deal and one condition ... Tammy's gotta do porn.

Vivid honcho Steve Hirsch made the offer ... $100k for the ring and in return he wants Tammy to shoot a 90 min sex tape. He's even giving her some options on the specifics of the shoot, letting her to choose her partner and the location.

No word yet on if Tammy will accept but Hirsch isn't playing around ... he wants the whole thing done in less than two weeks.

Time's a wastin'.

Another day, another super expensive purchase for Floyd Mayweather ... this time, the boxer dropped $250k on two diamond and gold chains -- and offered to pay IN CASH!!!

The boxing legend hit up Mr. Flawless in NYC -- where he had his eye on two diamond cuban link chains.

We're told one chain weighed in at 2.2 pounds ... with 60 carats of diamonds. The other weighs 2.65 pounds and sports 70 carats in diamonds.

When it came time to pay, Floyd whipped out a giant stack of cash ... but we're told he was just playin' around -- and did what everyone else does at a jewelry store ... charged it.

#ItsGoodToBeRich

Tammy Sytch is giving fans a chance to get a piece of her WWE Diva alter ego, Sunny, by hawking a totally unique piece of memorabilia ... her Hall of Fame ring!

Sunny got the ring in 2011 when she was inducted, but says she's ready to turn the page on her pro wrestling days. She's unloading the ring on eBay with an opening bid of $3,000.

Sytch says the sale has nothing to do with her legal troubles last year, she's just wiping the slate clean. She told us, "It's time to let go of the past and selling my ring is the right way to get back on track!"

The Redskins are out of the playoffs, but Kirk Cousins could still get a Super Bowl ring this year -- if he buys the one Mark Rypien won back in 1988 ... 'cause it's officially on the auction block.

TMZ Sports has learned ... Rypien's championship ring from Super Bowl XXII is up for grabs via Goldin Auctions -- starting bid is $15,000.

Of course, Rypien didn't play a single down in that game -- when Washington beat Denver 42-10 -- 'cause he was only a rookie back then ... playing behind Doug Williams and Jay Schroeder.

Goldin Auctions tells us Rypien sold the ring back in 2013 -- and the current owner has decided the time is right to put it back on the market.

We're told the ring is expected to fetch around $50k.

Don't feel bad for Rypien -- he went on to lead the Redskins to a victory in Super Bowl XXVI ... and even took home the MVP trophy.

T.I. may have to start mining for some gold of his own because at least one jewelry store is done with him, claiming he walked off with a ton of their bling and never anted up.

Aydin & Co in Georgia says in a new lawsuit it delivered an 18.5 karat white gold bracelet, a ring and yellow gold rosary to the rapper in 2014 and Tip paid $20k. Problem is ... he still owes $44k.

That's just the tip of the iceberg. According to the lawsuit, during the decade T.I. was one of its shoppers, he stiffed them out of more than $400k.

All tolled, Aydin's gunning for T.I. to the tune of $700k.

T.I. says the lawsuit is BS.