M. Flynn

Amethyst-beaded necklace, $98
M. Flynn, mflynnstudio​.com

Run by two sisters, this pink-walled jewelry spot features Alexis Bittar cuffs, ’20s cocktail rings and a house line of gemstone pendants. A custom design service is particularly popular with hip local marrieds-to-be.

40 Waltham St., 617-292-0079, mflynnstudio​.com