Berganza is an antique and vintage jeweller based in Camden, specialising in rare gemstones and exceptional craftsmanship. The business deals exclusively in natural, untreated gemstones from historic sources such as Kashmir, Ceylon and Colombia, which represent only 5 to 10 percent of gemstones available today. Each piece is hand-crafted, featuring techniques including enamelling, goldwork, carved intaglios and gem setting. The collection spans thousands of years, encompassing Georgian, medieval and signed pieces from houses including Cartier and Van Cleef and Arpels. Berganza regularly reassesses valuations to reflect current market values.