We Just Got a New Look at Kathy Hilton's Massive Diamond Ring (PHOTOS)

While there were many buzzy moments in Part 3 of The Real Housewives of Beverly Hills Season 13 reunion, we couldn't take our eyes off Kathy Hilton's diamond ring. 

When the "grand dame of Beverly Hills" — as reunion host Andy Cohen named her — entered the room, the place lit up not only with Kathy's sparkly scalloped cape and matching skirt, but her enormous diamond engagement ring. Lucky for us, Kathy gave a closer look a few times throughout the episode at her sparkler, giving us all the jewelry envy. 

See Kathy Hilton's diamond ring 

When Kathy entered the set, she shone brightly in her silver ensemble with her Oscar de la Renta handbag on her arm.

When she sat on the couches with the ladies, we got a full view of the emerald-cut diamond ring, adding even more dazzle to her already sparkling outfit. 

Kathy Hilton and Kyle Richards at the Real Housewives of Beverly Hills Season 13 reunion together. Photo: Bravo

Detail shot of Kathy Hilton's Ring while at the Real Housewives of Beverly Hills Season 13 reunion. Photo: Bravo

Here's What You May Have Missed on Bravo:

Kyle Richards and Kathy Hilton Sparkled for Oscars Events in Head-Turning Dresses (PHOTOS)

Here’s Why Melissa Gorga "Texted" Kyle Richards an "Apology" Amid Some Recent Dramatic Headlines

Mauricio Details a "Breakdown" from Stress Over Work and His Marriage to Kyle: "Too Much for Me to Handle"

Kathy gave us another peek in between takes as she was attending to her phone. 

Kathy Hilton on her phone at the Real Housewives of Beverly Hills Season 13 reunion. Photo: Bravo

Kathy has worn the ring for many years, and the throwback photos below of both Kathy with her husband, Rick Hilton, and Kathy and her daughter, Paris Hilton, both giving a solid view of the gorgeous diamond ring. 

Kathy Hilton and her husband Rick Hilton during Liza Minnelli Headlines Dennis Basso's Fashion Show Finale at the Pierre Hotel in New York, New York. Photo: Sylvain Gaboury/FilmMagic

Paris Hilton and Kathy Hilton at the The Equitable Center in New York City, New York. Photo: Ron Galella Collection via Getty Images

Kyle Richards' wedding ring drama 

Kathy isn't the only one whose jewelry we've been paying attention to on Season 13 of RHOBH. 

During this past season, there's been a bit of conversation surrounding Kathy's sister Kyle Richards' rings —  or lack thereof.

On the Season 13 premiere, the mom of four admitted she was "very taken aback" when Mauricio Umansky's mother questioned her about the state of her and Mauricio's longtime marriage. "I was seen without my wedding ring, and people started the rumor," Kyle explained, noting that the ringless photo in question was taken the "one time" she was "lifting weights" and shouldn't have been a big deal. 

On Season 13, Episode 6, however, which aired on November 29, Sutton Stracke spotted a different "sapphire-and-diamond ring" on Kyle's finger and told Garcelle Beauvais, who later asked during a dinner party at Kyle's, "What's with the new band?"

Kyle explained her "big diamond" was "in the bank."

Kyle's rings shown during The Real Housewives of Beverly Hills Season 13, Episode 6. Photo: Bravo

Garcelle then asked Kyle if the new ring was "a make-up band" from Mauricio, considering the state of their marriage. Kyle quickly shut down that idea, noting, "It wasn't a gift from Mauricio. I bought it myself."

RELATED: Show Your Love for The Real Housewives of Beverly Hills With Chic Bravo Essentials