Jennifer Lopez received a special piece of jewelery from Ben Affleck for her birthday.

Jennifer Lopez received a special piece of jewelry from Ben Affleck for her birthday.

 Don't be misled by her rocks: they were created by Ben Affleck himself.

The 48-year-old actor and director assisted in the creation of a unique jewelry piece for Jennifer Lopez's 52nd birthday, ensuring that a passionate kiss wasn't the only gift he gave her on her special day.

He collaborated with Foundrae on a bespoke charm necklace with emotional pendants that convey information about their connection.

The gold necklace, which included a succession of charms filled with multiple meanings, “clearly expressed their love, but it's also a reminder of their ability for development and growth,” Beth Bugdaycay, creative director and co-founder of Foundrae, told E! News of the gold necklace.

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For his beau's birthday necklace, Affleck chose several medallions, including one that represents "resilience," which Bugdaycay describes as "wild, plentiful, and untamed."

He also chose blooms that are "nourished by passion and continue to grow, even in the dark, in the face of hardship," but can't be separated from thorns, signifying "the risk we take for something we love, for living life totally without reserve."

While Lopez's love is free, her birthday bling was most certainly expensive; each necklace costs around $3,000, and Affleck piled on at least three important trinkets. 

Lopez wore a thick link chain and key pendant by Foundrae on her birthday boat excursion, which she teamed with a Valentino bikini ($650) and silk-cotton cape ($2,300) in her now-viral birthday Instagram picture.

The on-again couple was photographed in Capri, Italy, following their party in Saint Tropez, when Affleck replicated the booty grab from the "Jenny From the Block" video.

Lopez's birthday gift isn't her only piece of jewelry dedicated to her new relationship; following her birthday celebration, she unveiled a "Ben" necklace, but it's unclear if it was a gift from Affleck.

Lopez wore “Alex” hoop earrings for now-ex-fiancé Alex Rodriguez in 2019, while Affleck and then-girlfriend Ana de Armas wore similar heart necklaces last year.

After the couple resumed their romance this year, Affleck offered his own bling-based homage to Lopez, seeming to wear the same watch he wore in her 2002 "Jenny From the Block" video.

Perhaps the second time is the charm with a charm necklace devoted to their love.