Product Description
American Art Deco ring (likely by Louis C. Tiffany for Tiffany & Co.) set with a large blue zircon (approx. 64 carats) set in a fancy platinum mount with 14 round cut diamonds, gold orange citrines, marked, c. 1930
***Top quality gem blue zircons over 10 carats trade at a minimum price of $200 per carat and go up from there depending on the size of the stone and the quality of the color. Blue zircon, the most popular color, is produced by heat treatment of brown zircon. But not all brown zircon will turn blue when heated; only some zircon has the right physical structure for this to occur. This is why most blue zircon comes from certain sources in Cambodia or Burma. Blue zircon is a reasonably hard gem with a Mohs hardness of about 7 to 7.5. Blue zircon has some unique properties that make it very popular with gemstone aficionados. Not only does zircon have outstanding brilliance, but it also has very strong dispersion or fire, the tendency to split white light into the spectral colors. Zircon also has very pronounced birefringence or double refraction, with a wide variance between the two refractive indices. This can be often be observed with the naked eye when you look down through the table of a cut zircon; you will observe facet doubling that makes the facet edges appear blurred.
American Art Deco ring (likely by Louis C. Tiffany for Tiffany & Co.) set with a large blue zircon (approx. 64 carats) set in a fancy platinum mount with 14 round cut diamonds, gold orange citrines, marked, c. 1930
Enrico Serafini (1913-1968) was born in Florence, had a workshop in Piazza Santa Felicità in that city in 1947, and quickly established a successful business creating jewelry for many celebrities of that time, including John Steinbeck and Adlai Stevenson.
FRENCH ART DECO
Dinanderie vase c.1930
Richly patinated handwrought boule vase with a double large triangle silver overlay motif, square palm wood attached base
For more information see: Art et Décoration Revue Mensuelle D’Art Moderne, Tome XLVII. (Paris: Librairie Centrale Des Beaux-Arts) p.217; Silver of a New Era: International Highlights of Precious Metalwork from 1880 to 1940, (Rotterdam: Museum Boymans van-Beuningen, 1992) p.68, cat.no. 61; La Dinanderie Française 1900-1950, Dominique Forest and Marie-Cécile Forest (Paris: Les Éditions de l’Amateur, 1995) p.231-233.
H: 9” x D of vase: 8 ½”