Attributed to Marcus & Co. Art Nouveau Gold, Opal, Green and Brown Enamel Iris Pendant with Gold and Gray Enamel Chain Necklace 14 kt., one modified oval boulder opal ap. 32.0 x 16.2 mm., pendant with marks, enamel loss, attributed to Marcus & Co., chain not original, circa 1900, ap. 24 dwts. Length 22 5/8 inches. Similar example: Maker & Muse, The Richard H. Driehaus Museum, The Monacelli Press, pg. 129. Similar example: Jaques and Marcus (Firm), creator. "Brooches, Pendants, No. 3." Jewelry Design Books of Jaques and Marcus, 1890 to 1910, 1890. Digital by Dartmouth Library, doi.org/10.1349/ddlp.1946. With thanks to Beth Wees and Sheila Smithie for their generosity in sharing their abundance of knowledge and research. CThe Estate of an American Family品相: Opal: medium blue to light blue to powdery blue, rainbow play-of-color, pinkish and red flashes to right side, left side of blue and green flashes, faint crazing, scratch at top, reverse of boulder rock, good polish. Some enamel loss to leaves. 2 1/8 x 1 inches. Chain width 3/16 inch. Any condition statement is given as a courtesy to a client, is an opinion and should not be treated as a statement of fact and Doyle New York shall have no responsibility for any error or omission. Please contact the specialist department to request further information or additional images that may be available.