Cartier, Van Cleef & Arpels, Bulgari, Chopard.
How the Budapest exchange file is read
For maison jewellery, the signature can be a major value layer, but only when the piece is authentic, desirable and supported by condition, invoice, box or reference information.
The Budapest review separates the intrinsic diamond or gold content from the signed jewellery market, so the seller does not reduce a maison piece to scrap value.