Claire Falkenstein (July 22, 1908-October 23, 1997) was an American sculptor, painter, printmaker, jewelry designer, and teacher best known for her large-scale fusions of metal and melted glass.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Claire_Falkenstein

Conic by Claire Falkenstein
1959 / Brazed copper / 70″x38-1⁄2″x10-1⁄2″ / Smithsonian American Art Museum, DC

Claire Falkenstein on Artnet: http://www.artnet.com/artists/claire-falkenstein/

Further reading:
https://www.guggenheim-venice.it/en/art/artists/claire-falkenstein/
https://awarewomenartists.com/en/artiste/claire-falkenstein/
https://worcester.emuseum.com/people/4982/claire-falkenstein;jsessionid=52B136A763FBCA646D9B3295C7965290/objects