Dates are not always precisely known, but the Art Institute strives to present this information as consistently and legibly as possible. Dates may be represented as a range that spans decades, centuries, dynasties, or periods and may include qualifiers such as c. (circa) or BCE.
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M. L. Otrange, “Jewels of the Fifteenth and Sixteenth Century,” The Connoisseur 132 (1953), pp. 126-33, here 130. pl. 19.
Ian Wardropper et al, Renaissance Jewelry in the Alsdorf Collection, The Art Institute of Chicago Museum Studies 25, 2 (2000), pp. 48-49 and 93, no. 15.
Chicago, Field Museum of Natural History, “The Nature of Diamonds,” 17 October 2009 - 28 March 2010.
Henry Oppenheimer, b. Washington and later Frankfurt and London (d. 1932) [sold, Christie’s, London, July 27-29, 1936, no. 60]. Melvin Gutman, New York, by 1962; his sale, New York, Parke-Bernet, October 17, 1969, no. 91; Marilynn B. Alsdorf [according to Wardropper 2000, p. 4]; given to the Art Institute, 1992.
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