Bling!

Nice rock.

Here's Hannah Davis at the CMAs Wednesday night ... showing off the insane diamond engagement ring she got from her fiance Derek Jeter.

Rick Ross is the boss of the insanely expensive engagement ring he bought for his now ex-fiancee ... despite her insinuations.

Lira Galore posted a pic on Monday of her wearing the 11 carat, $350k rock ... just a day after they broke up.

We're told it's an old photo, and Rick has the ring firmly in his possession. We're also told they broke off the engagement at Rick's home and when Lira left she was not wearing the ring. We do not know the circumstances under which the ring left her finger for his hand.

If Lira wanted to keep the ring, it was a losing battle. In Georgia, an engagement ring is a "gift in contemplation of marriage" ... meaning if the couple doesn't get hitched, the guy gets it back.

Onward, but in the ring dept., not necessarily upward.

The Warriors NBA championship ring has 240 flawless diamonds and almost 1/4 lb. in gold ... but the ring's most badass feature? DIAMONDS that GLOW under black light!!

Jason of Beverly Hills -- jeweler to 250 current NBA players -- tells TMZ Sports the "minimalist" ring has 10 hidden design features ("the inside of the ring is engraved to look like the Oracle Arena rafters") ... but the fluorescent diamonds are most impressive.

"Every diamond fluoresces," Jason told us, "We had to sort each diamond and pick flawless stones that barely fluoresced, with the exception of 4 that fluoresced bright white, almost blue."

Jason says examining the diamonds took 10 to 12 hours per ring. "We literally had guys in our factory in sleeping bags, sorting diamonds."

The glowing diamonds were strategically set at the bottom of the ring ... representing the organizations 4 NBA titles.

The finished product is awesome ... but Jason says he can't take all the credit for the ring ... "I got a good amount of input from the players, especially Steph Curry, Draymond Green, and Andre Iguodala."

#GlowingDiamonds #Swag

Drake's putting a new twist on the ole classic Jesus piece ... with his new "6 God" ice.

Drizzy turned up for his 29th birthday Saturday at Omnia Nightclub in Las Vegas, and one of his gifts was a diamond and gold chain from his fave jewelers ... Dave Bling and Will Da Boss of DWS Jewelry & Co.

Dave and Will tell us the pendant -- two hands clasped in prayer next to a 6 -- was inspired by Drake's song "6 God" off the album, "If You're Reading This It's Too Late." And even though it's not huge in size, it's worth a sweet $15k!

Even in October ... still so hot up in the 6.

Tough loss last night ... but here's something that might cheer up SD Chargers WR Keenan Allen -- his brand new fancy GRILL -- complete with 14k gold and roughly 300 DIAMONDS!!

TMZ Sports spoke with Avo at A Image Jewelry -- who's made grills for stars like Chris Brown and Kid Ink -- and he says KA recently hit him up requesting a special set for the 2015 season.

The result?! A sick gold base peppered in 3 karats worth of diamonds -- and we're told the whole thing runs in the $10,000 range!

Allen is a huge fan of mouth jewelry -- and has been seen out in some of his other A Image pieces (see below) ... but the new one is next level stuff.

Terrence Howard was weirdly in an armlock at the Emmys with one of his divorced wives, and they were both wearing wedding bling.

Mira Pak was clutching Terrence's arm as they mugged for the camera.

Terrence and Mira were married on October 2013, but she filed for divorce this March. She gave birth to their son 2 months later. The divorce became final in July.

So it's surprising that not only are they together, they're wearing rings.

It pays to be Rick Ross' ride or die chick -- the Boss just iced up his GF Lira Mercer with an enormous diamond engagement ring that set him back $350,000.

Rick and Lira Galore have only been together for a few months. She was by his side during his Georgia arrest for kidnapping and assault, and the commitment has paid off.

We're told the centerpiece of the 11 carat sparkler is a whopping 5ct emerald-cut diamond. Ross didn't hold back on the wedding band either ... it's 6 carats and all diamonds.

Ross slipped the ring on Lira's finger in NYC, in the Rafaello & Co. jewelry store. We're told he did NOT get on one knee.

The newly engaged couple celebrated with a chicken satay dinner at Red Stixs.

Liberty Ross appeared to be leaning left Tuesday night ... probably because of the sheer weight of the enormous engagement ring on her finger.

Ross and fiance Jimmy Iovine --who has the Midas touch with both Interscope and Beats under his belt -- recently decided to tie the knot.

Score one for both.

Paris Hilton came thiiis close to losing $350,000 -- so, yeah ... she's about to give the Polish firefighter who found her diamond ring the serious hook up.

Paris tells us she was panicked when she realized the ring was missing -- and says she accidentally left the massive diamond-encrusted piece in the vehicle that took her across the tarmac to her private jet.

How do you misplace a $350k piece of jewelry? P says she was exhausted because she'd performed in Ibiza the night before, then hopped a flight to Poland and worked all day ... before jetting back to Ibiza.

Bottom line ... she's extremely grateful to get it back, and says she's in the process of getting the firefighter's contact info so she can give him a reward, and send some gifts for his family.

She wasn't specific about how big the reward will be but, y'know Paris. She does everything big.

7:20 AM PT -- The airport spokeswoman tells TMZ, the firefighter told the airline he had the ring but kept it while everyone looked for the owner. Three hours later, they contacted the Fashion Week people and asked if anyone lost a ring. She did not say the fireman saw Paris on TV.

Paris Hilton got lucky in Poland when a firefighter found her extremely expensive diamond ring on an SUV, but based on what we know there's something sketchy going on here.

Paris apparently lost the diamond-studded ring Friday on an airport shuttle in the city of Lodz. Two days later, an airport fireman found it on the floor of the shuttle.

Now here's the sketchy part. An airport spokeswoman says the fireman thought the ring belonged to a flight attendant. The spokeswoman says, "soon after he noticed Hilton on TV wearing the ring." She wasn't specific as to how much time passed ... hours or days before the fireman saw Paris on TV.

Question ... Why didn't the fireman turn the ring in as soon as he found it?

We're not saying the fireman was necessarily going to keep the ring if he thought it belonged to a flight attendant, but Paris is a rich woman, and rewards are often in order when a dude finds your enormous diamond ring.

The guy who co-founded Skype -- and sold it for $2.6 BILLION -- claims he got the picture when he found out his fiancee allegedly cheated on him, and now he's suing to get the ridiculously expensive ring back.

Janus Friis claims in a new lawsuit, he got engaged to Maria Louise Joensen -- a Danish recording artist who goes by Aura Dione -- back in 2013. As a symbol of his love, he gave her a $471,000 engagement ring, an apartment and cash, but claims there were strings attached to the gifts ... they had to seal the deal.

Friis claims he learned she had "multiple affairs and sexual encounters with other men" and broke off the engagement. So now he wants his stuff back.

If Maria's holding on to the ring, it's pretty obvious why ... Janus describes it as a 950 Platinum band inset with a number of diamonds, including a 1.76 ct round brilliant cut diamond -- D color, internally flawless, excellent symmetry and cut grade.

The ring also has a pair of blue pear shaped diamonds of South African origins with a collective weight of .91 ct.

Friis wants minimum $1 million.

Imagine you're out of work and looking for a paycheck ... and then you stumble upon a HUGE DIAMOND EARRING -- would you give it back???

Lucky for Dez Bryant, the man who found HIS diamond after it fell out during a Dallas Cowboys practice yesterday isn't you.

The guy with the golden heart is Miguel Preciado ... who's been volunteering at the Cowboys practice facility in Oxnard, CA while looking for a permanent job.

Preciado tells us ... he NEVER (not even for a second) considered keeping the diamond and selling it ... even though hawking it could've brought in THOUSANDS of dollars.

"I'm just a volunteer who did the right thing that I would have wanted done for me," Miguel tells us.

When Miguel gave the diamond to #88 -- Bryant insinuated he'd be hooking up Miguel with some sort of a reward, but Miguel says the move was never about money -- he just wanted to do what's right.

Jennifer Aniston is back from Bora Bora ... proudly displaying the symbol of marriage.

Jen showed up at the premiere of her new movie, "She's Funny That Way," with a diamond encrusted gold wedding band.

She wasn't wearing her engagement ring, maybe to showcase the new bling.

Julianne Hough is excitedly announcing she's freshly engaged to Washington Capitals star Brooks Laich -- but, oddly, she's not giving up the goods!

The "Dancing With the Stars" judge has been dating Laich -- a center with the Caps -- since 2013. She announced their engagement on Instagram by posting a pic that does NOT show Brooks' face or the ring ... the only 2 things every woman wants to see.

She said, "We are overwhelmed with joy and excitement to share with you our recent engagement! #fiancé #love"

That's sweet and all, but here's what you really want to see -- Brooks' face. Judge away, ladies.

Drake is set to shut down Toronto with his performance at OVO Fest tonight ... and when he hits the stage, he'll likely be rockin' some new ice.

Drizzy hit up social media last night and posted a pic of a diamond encrusted "championship" ring ... made by celeb jeweler Dave Bling ... who's hooked up huge star athletes and musicians.

What could Drake possibly be celebrating? Maybe the total obliteration of rap foe Meek Mill -- which is earning him huge props from almost everyone -- including athletes like Odell Beckham Jr. and Brandon Jennings.

Ohio State Buckeyes star Cardale Jones currently makes ZERO dollars as a college athlete ... but this baller on a college budget has a nice little jewelry collection.

Jones posted a "sneak preview" of what he's planning to rock to the ESPYs tonight -- a collection composed of a Gucci watch, Louis Vuitton shades, gold chains, another gold Invicta watch, diamond earrings and a gold belt buckle.

Oh, and his National Championship ring.

For some reason, Jones pulled the video off his Instagram after some of his followers began to question how he could afford such fancy stuff on his NCAA income.

But here's the deal ... at the end of the day ... it might not even be his stuff. Or it could be fake.

Or maybe he's done really well in the stock market.