Matan Diamond
Reference work entry
DOI: https://doi.org/10.1007/978-3-540-72816-0_14008
a blue, reported to be pear-shaped, or intended egg-shape of 367 cts. Found on the Island Borneo ca. nineteenth century. It belonged to the Sultan of Matan. Some investigators believe that it was actually quartz crystal. Also spelled Mattan, Matam, Rajah of Matan, and Mattam Diamond.
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© Springer-Verlag Berlin Heidelberg New York 2009