Hailey Bieber just added a sparkly new keepsake to her jewelry wardrobe, a diamond-embellished "MOM" ring that commemorates the birth of Jack Blues Bieber on August 22.

The model and skincare entrepreneur showed off the ring on her Instagram Stories on September 3. About two weeks earlier, proud papa Justin shared a pic of his wife holding the baby's foot, along with the caption, "WELCOME HOME JACK BLUES BIEBER." He punctuated his Instagram post with a teddy bear emoji.

The new mom chose to wear the dimensional "MOM" ring on the index finger of her left hand. Designed by Miami-based Isabela Grutman, the ring's letters seem to rise from the band on different planes. According to pagesix.com, the ring features .21 carats of diamonds set in 14-karat gold.

On the ring finger of the same hand is the upgraded 18-carat oval-cut diamond engagement ring that she received in late spring. The ring commemorated the renewal of the couple's wedding vows after five years of marriage, as well as the exciting news that they were expecting their first child.

Her previous engagement ring — with an oval-cut diamond said to weigh between 6 and 10 carats — has found a new home on the pinky of her right hand.

Justin, 30, originally proposed to Hailey, 27, in July of 2018 and the couple tied the knot in a New York City courthouse two months later. Their more formal wedding in South Carolina in September of 2019 has been called one of the most iconic celebrity celebrations of all time.

Credits: Image via Instagram / haileybieber; Instagram / justinbieber.