Stores like Catbird are selling clients a more permanent version of friendship bracelets and commemorative jewelry. Julia West recently had a thin gold chain permanently welded around her wrist. West, who works in social media at the Gap, explains, “I have a best friend of almost 20 years now and we grew up together. She and I always tried to do friendship bracelets, and every single time, she would lose the other half of the heart or the locket, so we stopped doing it.” But when Catbird, a popular Brooklyn-based jewelry store specializing in “casual luxury” that’s beloved on social media, started offering permanent bracelets, the now-adult friends found a solution. West says, “I messaged her on Instagram and I was like, ‘Oh, my god, Katie, now you can never lose it.’” The two went to get their bracelets together. West says “it’s really special to have something that is so permanent. I mean, I know that it is able to come off if I need it to, but it’s a nice reminder that she’s there, and she has the same one.” And, West notes, “she obviously hasn’t lost it, which has been amazing.” For jewelers who offer permanent bracelets, welding or soldering a bracelet around a customer’s w...