While Gurhan Orhan’s jewelry has been available at high-end stores such as Neiman Marcus and Saks Fifth Avenue for years, the 1,500-square-foot Gurhan Atelier on Franklin is his first dedicated shop. It has what an edited collection of his work, in silver, gold, and platinum, with an emphasis on repurposed historical artifacts, such as 18th-century lava stone cameos, tiny Victorian mosaics, Roman coins, and Egyptian scarabs. Behind a pair of wine-cellar doors from Argentina is a place where Orhan can not only make jewelry, but also—given that it’s part of the shop—create bespoke pieces in collaboration with clients. What’s more, he can socialize with them around the four-stool bar.