18K yellow gold tubogas necklace, marked on catch.

Carlo Weingrill is a venerable 4th generation Italian jeweler based in Verona, Italy. Established in 1879 and still owned and operated by the great-grandson of the founder, Weingrill is well-known for hand-made 18K gold jewelry. They are the original designers and manufacturers behind some of the most classic designs in jewelry, including Bulgari's famous "tubogas"-style bracelets, necklaces and rings, Cartier's original Trinity bangle bracelets, as well as various gold cuffs and other pieces for Tiffany & Co.