Every celebrity seems to have a pet cause, and we have a hard time keeping track of who supports what and deciding which ones we’re going to contribute to on our non-star salaries. Take Rachel Bilson. She designed this bracelet to help support the Diamond Empowerment Fund, which works to educate and develop disadvantaged people in African nations where diamonds are a natural resource. Would we have chosen to donate money to that organization on our own? Probably not, but we had already imagined the bracelet becoming our new signature accessory when we found out that $20 from each sale goes to the foundation. Isn’t it nice when buying something you already wanted benefits other people? [Macy’s via Luxist]

Bored of your bling? Sorry, you’re out of luck ... well, unless you bought this interchangeable diamond stone ring. The ring “set” (that’s what we’re calling it) by Sruli Recht comes with a total of three stones, which are in different colors and shapes so they can be switched out depending on your mood. It’s like a slightly more expensive (the stones are rough, uncut diamonds totaling €3530, approximately $5,060) mood ring! OK, so the price isn’t exactly accessible, but how cool-looking do these untreated gems look? [InventorSpot]

This week, we’re giving away a $200 JCPenney gift card to the best commenter on The Frisky. Whoever wins is going to have a tough time figuring out how to use it, so here’s an idea.

We’re always oohing and ahhing at the jewels celebs wear on the red carpet, from ginormous jade rings to intricate diamond and platinum bracelets, but, sadly, those statement makers don’t really have a place in our everyday lives. What we would wear pretty much every day, however, is a pair of diamond hoop earrings. They’d add some sparkle to our workday ensembles, and they’re elegant enough to pair with our best dress (should we ever have occasion to bring it out of the closet). [$229.99, JCPenney]

WIN THIS! We’re giving away a $200 gift card provided by JCPenney to use however you wish, but you have to work if you want it! The best commenter for this coming week—from today, Friday, Dec. 4 through Thursday, Dec. 10—will be awarded with the gift card. So, be as clever, smart, and original as you can. Click HERE to read the official rules. And remember to check Gift For Gab on Dec. 11 to see if you’re the winner.

Being cheated on sucks. The insecurity, the anger, the effort it takes to burn down his house ... it’s all the pits. And while we wouldn’t wish that on anyone, one English woman found a way to lessen the sting a bit, by demanding diamonds from her spouse every time it happened.

Elizabeth Charlton was married to her husband for 26 years. During that time, she gathered more than half a million dollars of “I’m Sorry” jewelry. From big ‘ol diamond necklaces to brooches, rings and bracelets, the girl accessorized her embarrassment well. So well, in fact, that a selection of 43 pieces just sold for a collective 300,000 British pounds at auction. Would you trade your husband’s infidelity for boatloads of bitchin’ jewelry? [Daily Mail]

Who am I to argue with the Madison Avenue suits who coined the phrase “diamonds are a girl’s best friend”?

If only diamonds were all we believe them to be. The violence resulting from the diamond mining and trading industry is, in a word, tragic. And, as it turns out, diamonds aren’t even as valuable as we’ve been told.

Most little girls have dreamed about actually living Madonna’s “Material Girl” video at some point. I mean, who doesn’t want a diamond ring for every finger? This greedy dream is slightly more attainable now that luxury retailers like Tiffany & Co., Cartier, Judith Ripka, Di Modolo, and Damiani have started offloading their wares through the Madison Avenue Sample Sale, which brings high-end products straight from the designers’ showrooms to various cities across the country. The next sample sale is in New York City, but you should check the website to see when your city will play host. Soon you’ll be able to shop online also. Here’s a big thank you to the recession! [Madison Avenue Sample Sale via NYMag.com]

• Tyra Banks is making a “comeback” of sorts: “America’s Next Top Model,” cycle 12, is back on the air tonight. I wonder what over-the-top schtick Ty-Ty will go for this year? [The CW]
• He’s not MY choice for sexiest royal, but whatever…“Esquire” voted Prince Charles, second in line to England’s throne, as one of their “Best Dressed Men” in their April issue. [Daily Mail]
• Jennifer Lopez borrowed $50K worth of bling from Swiss billionaire/diamond aficianado Robert Mouawad for an event at Barney’s…and liked the diamond jewelry so much she kept it.  No hard feelings from the billionaire, though.
• Somewhat inexplicably, Paris Hilton will be the first recipient of The Fragrance Foundation’s “Celebrity of the Year” award in May.  You know, we actually have a bottle of her Fairy Dust perfume and just haven’t gotten around to trying it yet…. [Now Smell This]

• George Clooney’s character in “Burn After Reading” is a sex addict. The sex toys from the movie are now selling out in stores. [NY Post]
• Dylan McKay will not be returning to Beverly Hills. Though he’s been asked to make an appearance on the new “90210,” Luke Perry won’t reprise the role. Move on, Kelly. [E Online]

Diamonds can be made out of many materials, even your dead dog’s ashes, and now booze-hounds may be able to get bling made from their alcohol of choice: tequila. Now, technically the diamonds a team of researchers in Mexico have made from 80-proof tequila blanco are diamond films, used in machinery that operates at high temperatures or in harsh conditions, but maybe someday, someone will put a ring on my finger made from Patron. [New Scientist]

So, Nick Cannon’s wedding ring. From the looks of this photo, it is large and covered in diamonds. Eek. Men shouldn’t be allowed to have gems on their wedding bands. I realize this is discrimination, but men who wear diamond rings are just trying to be Tony Soprano or P.Diddy. Like, because they’re hyper-masculine, they’re allowed to wear diamonds. If a guy wants people to know he has money, he should buy a vintage Cartier watch. Or a private island. [PopSugar]

Last week, we discussed who gets the ring if an engagement is broken off. But what do you do with the ring if you get to keep it? It’s not like you can wear it on another finger—engagement rings are just a little too distinctive-looking. Well, Dita Von Teese took her diamond from former husband Marilyn Manson and had Christian Dior make it into an even more gorgeous ring. “It’s nice; it’s big. I feel like I suffered greatly for that diamond, and it needed to be reborn into something better.” [NY Times]

My dog, Lucca, had to go to the vet today which has got me thinking about what I would do if she didn’t come home—pets are like family and the only thing I love more than her is my fiancé. My mom and brother are third and fourth (sorry, guys!). So aside from contemplating taking a long walk off a short pier, I think I might follow Kimora Lee Simmons lead. Her beloved dog Zoe just died and she’s thinking about having the 18-year old pup’s remains turned into a diamond. Say what? “There is a company that makes diamonds out of your loved ones,” the fabulous Kimora told People. “They make diamonds from a little of the carbon from the ash, so I might do that.” It seems like a better way of keeping your dog with you at all times—after all, my childhood cat, Ribbon, is sitting in a tin in a storage facility somewhere in Southern California. [StarPulse]