We all knew Nordstrom Rack and T.J. Maxx were set to share the former Haggen supermarket building at The Promenade at Town Center.

Here’s what we didn’t know: They won’t be alone.

Kitsinian Jewelers, headquartered in Van Nuys, will set up a factory outlet store between the two retailers, Arch Kitsinian told The Signal on Friday. He expects a late summer or early fall opening.

“Nobody knows,” Kitsinian said.

Kitsinian Jewelers sells a variety of engagement rings, wedding bands, watches and other fine jewelry including necklaces, earrings, bracelets and charms, according to its website.

Started by Arch’s father, Sarkis, Kitsinian Jewelers was born as a “modest shop along Beirut’s most fashion-forward avenue,” according to the website, before he and wife Susan opened a small store in Hawaii in 1974. The family later relocated to the Los Angeles area.

On its website, Kitsinian labels itself as “America’s most trusted family in jewelry.”

The transformation of the 55,000-square-foot former grocery building…