Optical investigations clarify a puzzle: The Wittelsbach and the Hope diamonds Der wittelsbacher und der hope-diamant: Optische untersuchungen klären ein rätsel
Evers J, Möckl L, Nöth H (2012)
Publication Type: Journal article
Publication year: 2012
Journal
Book Volume: 46
Pages Range: 356-364
Journal Issue: 6
Abstract
Diamonds are formed from carbon at high pressures and high temperatures in the inner part of the earth. Doping with very small amounts of boron leads to diamonds with blue colour. Two of the most famous historical blue diamonds, the Wittelsbach and Hope Diamond, were found in the Indian Kollur mine. The latter was brought to Europe by the French gem merchant Tavernier. Today it is displayed in the Smithsonian Institute. The Wittelsbach Diamond was for a long time in the possession of the House Wittelsbach until it was secretly sold in Antwerp in 1951. In 2008, it was purchased by auction by the jeweller Graff who recut the gem. In 2011, it was sold to an unknown buyer. As the Wittelsbach and the Hope diamond share origin and colour, it was assumed for a long time that both are pieces from a larger crystal. By optical investigation it was now shown that they have indeed some similar optical properties, but differ strikingly in other ones. Hence, they cannot originate from the same crystal. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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APA:
Evers, J., Möckl, L., & Nöth, H. (2012). Optical investigations clarify a puzzle: The Wittelsbach and the Hope diamonds Der wittelsbacher und der hope-diamant: Optische untersuchungen klären ein rätsel. Chemie in Unserer Zeit, 46(6), 356-364. https://doi.org/10.1002/ciuz.201200585
MLA:
Evers, Jürgen, Leonhard Möckl, and Heinrich Nöth. "Optical investigations clarify a puzzle: The Wittelsbach and the Hope diamonds Der wittelsbacher und der hope-diamant: Optische untersuchungen klären ein rätsel." Chemie in Unserer Zeit 46.6 (2012): 356-364.
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