Cohasset Jewelers

No two diamonds are alike—and yet so much jewelry looks exactly like what she's wearing, dammit! Uncover flashes of originality at Cohasset Jewelers, a family business well into its third decade. Bench jeweler Don Cirone (who co-owns the store with brother Mark) crafts most of the highly covetable wares on-site, as well as made-to-order custom pieces. For guaranteed one-off wonders, plunder the strong estate section or hit its annual blowout sale in August.