The gold necklace that North West gave mom Kim Kardashian for her 44th birthday probably cost a pretty penny.

The gold and diamond necklace with a custom engraved nameplate is estimated to be worth up to $20,000, Olivia Landau, CEO of jewelry brand The Clear Cut, told People on Tuesday.

The jewelry expert estimated that each diamond was about 0.08 to 0.10 carats.

“It also appears to be a solid panel labeled ‘Skibidi toilet,’” Landau told the outlet. “The estimated value of this necklace could be around $15,000 to $20,000.”

Custom engraving is also currently very trendy, as Landau explained: “People love to create an additional atmosphere with their jewelry, especially when giving as a gift.”

North – who Kardashian shares with ex-husband Kanye West – had fun with the “Skibidi Toilet” engraving, which references a viral web series on Alexey Gerasimov's YouTube channel.

The series features a fictional battle between toilets with human heads and humanoid characters with electronic devices as heads.

Although North, 11, teased the Skims founder with the name tag, he also added a sentimental note on the back.

The back of the nameplate reads “Love, North” along with the date “10/21/24.”

Kardashian shared a video of the necklace on her Instagram Story on Monday and jokingly questioned North about her choice of words on the necklace.

“Because you love Skibidi Toilet,” North said, to which the “Kardashians” star replied, “I do? I do?”

Kardashian also shared a clip of the pink and white balloons her children used to decorate their home in honor of her special day.

North and her siblings Saint, 8, Chicago, 6, and Psalm, 5, even attached handwritten notes to the balloons.

The cards read: “You are a flower to me,” “You are the best mom ever,” and “You are strong.”

“These are so cute,” Kardashian gushed, adding, “I love this.”

North chimed in and explained that she didn't “make” the balloons, she simply “got” them for Kardashian.

The billionaire reality TV personality began her birthday celebrations early Sunday, sharing a video of her “birthday suit” on Instagram.

Kardashian wowed in a plunging nude dress by Diesel ($1,650) that included a bodysuit over a shiny, sheer tulle skirt. She paired the revealing number with a diamond cross necklace and multiple rings.