We have spent more than 30 years making jewelry in New York City. Every piece we sell arrives with a gemological appraisal from a certified gemologist, which you can give your insurer as a record of replacement value. Our lifetime warranty covers prong tightening, refinishing and polishing, professional cleaning, and repair of broken earring posts, which matters for diamond studs you wear daily. If a piece needs attention years from now, bring it back to us.