Selena Gomez just gave fans a very rare deal…As she sold her $3K diamond ring dedicated to Benny Blanco for just $12…And the reactions?

On Monday, the singer, 32, kicked off her “12 Days of Really Rare Stuff” campaign — sharing 12 “rare memories” with her fans as she counts down to the release of her and fiancé Benny Blanco’s joint album “I Said I Love You First.”

First up, Gomez gave away a particularly sentimental piece: the Jacquie Aiche diamond “B” ring which she posted on her Instagram Story back in December 2023 to confirm her and Blanco’s romance.

A rep for the brand told Page Six Style at the time that the design was totally custom and one-of-a-kind, featuring .44 carats of pavé diamonds and worth $3,250.

However, Gomez sold the accessory for just $12 on her merch store website earlier this week.

For the first day of #12DaysOfReallyRareStuff, which is also a countdown to I Said I Love You First, it felt fitting to choose something that is a symbol of the start of our relationship,” the “Only Murders in the Building” star wrote on the listing.

She then confirmed, “This is the exact, real ring that I posted to my Instagram story in December 2023.”

For day two of Gomez’s giveaway, the star gave fans the chance to win a signed Coach Selena Grace Bag ($395) — which the star designed — for free, with the winner being announced via email at 6pm P.T. on Tuesday.

In December 2024, the “Wizards of Waverly Place” alum replaced her wrap-around ring with an engagement ring featuring a marquise center stone in a cathedral setting with an oversized brilliant-cut eternity band.

Blanco popped the question after a year of dating Gomez, and the music producer, 36, had a specific image in his mind when designing the piece.

I just tried not to f—k up,” Blanco said during a joint interview with Interview Magazine after Gomez stated, “that’s the diamond I’ve always dreamed of.”

In fact, she’s been dreaming of the design since writing her 2015 hit “Good For You,” which includes the lyrics “I’m on my marquise diamonds / I’m a marquise diamond.”

Blanco recalled, “She showed me designs and I would always throw little hints. I’d be like, “Yeah, but if I ever made one, would you want it like this?”