Daum Nancy Style Etched Glass And Ormolu Mounted Vase. Measures H 10 1/2" W 9" Daum is a crystal studio based in Nancy, France, founded in 1878 by Jean Daum(1825???????????????????????????????????????????????????????????????????????????????????????????????1885). His sons, Auguste Daum (1853???????????????????????????????????????????????????????????????????????????????????????????????1909) and Antonin Daum (1864???????????????????????????????????????????????????????????????????????????????????????????????1931), oversaw its growth during the burgeoning Art Nouveau period. Currently Daum is the only commercial crystal manufacturer employing the p te de verre (glass paste) process for art glass and crystal sculptures, a technique in which crushed glass is packed into a refractory mould and then fused in a kiln