Long's has one of the largest selections of loose diamonds, certified diamonds, 18k yellow, white, and rose gold engagement rings, and platinum engagement rings in the country! We have rings of every style including solitaire engagement rings, three-stone engagement rings, diamond halo engagement rings, and vintage-style engagement rings. At Long’s, you’ll get the best diamond education, learn how to choose the right diamond and diamond engagement ring for you, see the latest designer diamond rings, explore our ring style guide, and more. See how Long’s has been serving the greater Boston area for over 135 years. It’s how Boston gets engaged.