Explore signed engagement rings and estate jewels created by Cartier, Tiffany & Co., Van Cleef & Arpels, Bulgari, Buccellati, and other celebrated houses. Michael Khordipour and Afshin Shaddaie personally evaluate each piece for authentic signatures, hallmarks, construction, gemstone quality, craftsmanship, condition, and overall design. From diamond solitaires and rare colored gemstones to Art Deco creations, statement rings, and elegant bands, this collection showcases the distinctive artistry of the world’s leading jewelers.

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Signed engagement rings offer the design heritage and recognizable craftsmanship associated with important jewelry houses. The collection includes diamond solitaires, three-stone rings, colored-gemstone creations, wedding bands, and statement jewels from different periods. Cartier, Tiffany & Co., Van Cleef & Arpels, Bulgari, Buccellati, Graff, Harry Winston, and other makers each used distinctive proportions, construction methods, hallmarks, and design traditions.

A signature alone does not establish that a jewel is authentic. Estate Diamond Jewelry examines the signature’s typography, placement, depth, and wear together with hallmarks, serial numbers when present, metal marks, construction techniques, gemstone documentation, condition, alterations, and previous repairs. Our experts evaluate the entire piece to determine whether its materials and craftsmanship are consistent with the attributed maker. Every jewel is selected for credible authorship, compelling design, structural integrity, and suitability for continued wear.