How can you tell who made a pearl necklace?

To tell who made a pearl necklace, look at the clasp. That's where jewelry makers typically place a maker's mark. Once you've located this hallmark, you can try snapping a photo and performing a reverse image search to identify who produced your piece. If this approach fails to yield results, you can type a description of the hallmark into a search engine and then use trusted online resources to determine the jewelry maker. Alternatively, you can have a certified appraiser or other expert perform the identification process for you. Explore a collection of pearl necklaces on 1stDibs.