Silver foil enameling on copper with a striated silvery white body with a dark silver grey modernist graphic.
Marks: del campo, ITALY (etched marks)
For more information on Ponti and Del Campo see: Gio Ponti, ed. Ugo La Pietra (Rizzoli International Publications: New York, 1996); Gio Ponti: the complete work 1923-1978, Lisa Licitra Ponti (Cambridge, MA: The MIT Press, 1990)
Edwardian Sugarloaf Fire Opal (approx. 4 carats TW) ring with 32 diamonds set in a milligrain platinum topped 18K yellow gold mounting, marked, c. 1910
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