The gold necklace North West gifted mom Kim Kardashian for her 44th 𝐛𝐢𝐫𝐭𝐡day likely cost a pretty penny.

The gold and diamond chain 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 around .08 to .10 carats.

“It also appears to be a solid plate engraved ‘Skibidi Toilet,’” Landau told the outlet. “The estimated value of this necklace could be around $15-20K.”

North West gifted her mom, Kim Kardashian, a diamond tennis necklace for her 44th 𝐛𝐢𝐫𝐭𝐡day on Monday.kimkardashian/Instagram

Olivia Landau, CEO of jewelry brand The Clear Cut, told People on Tuesday that the lavish gift could be worth up to $20,000.kimkardashian/Instagram

The nameplate was engraved with “Skibidi Toilet” on the front, along with “Love, North” and the date “10/21/24” on the back.kimkardashian/Instagram

The custom engraving is also very on trend at the moment, as Landau explained that “people love being able to create added sentiment with their jewelry pieces, especially when gifting.”

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.

In the series, there is a fictional battle between human-headed toilets and humanoid characters with electronic devices for heads.

North’s siblings, Saint, 8, Chicago, 6, and Psalm, 5, also joined in on the celebrations and gave their mom a 𝐛𝐢𝐫𝐭𝐡day cake.kimkardashian/Instagram

North and her siblings decorated their home with pink and white balloons with Kardashian’s face on them.kimkardashian/Instagram

Despite teasing the Skims founder with the nameplate, North, 11, 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 Monday and jokingly questioned North about her word choice on the chain.

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

Kardashian’s 𝘤𝘩𝘪𝘭𝘥ren attached handwritten notes to the balloons for her special day.@starface/Instagram

Some of the cards read, “You are a flower to me,” “You are the best mommy ever” and “You are strong.”Instagram/@kimkardashian

Kardashian also shared a clip of the pink and white balloons her 𝘤𝘩𝘪𝘭𝘥ren decorated their home with 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 mommy ever” and “You are strong.”

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

“These are so cute,” the Skims founder gushed, adding, “I love this.”

The TV personality shares her four 𝘤𝘩𝘪𝘭𝘥ren with her ex-husband Kanye West.Getty Images for The Met Museum/Vogue

North chimed in to explain that she “didn’t make” the balloons but simply “got them” for Kardashian.

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

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