Diamond's was a department store chain headquartered in Phoenix, Arizona that operated from 1897-1984.

Originally named The Boston Store,[1] it was founded by brothers Nathan and Isaac Diamond The Boston Store was founded in 1897 by brothers Nathan and Isaac Diamond, Jewish immigrants who had in 1891 begun a dry-goods mercantile in El Paso called The New York Store.

Hearing of great potential in Arizona the brothers moved to Phoenix.

[3] That same year the store opened its first branch location at Park Central Mall, the building on Washington Street was subsequently closed.

[8] Diamond's had expanded to twelve stores throughout the Southwest when in September 1984 then owner, Dayton-Hudson Corporation, sold the chain to Dillard's.