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Tuesday, 18 September 2007

Dutoitspruit. A minor alluvial dia­mond deposit in the Potchefstroom area, Transvaal Province, Republic of South africa. Current production is inconsequential.

Dutra diamond. See presidente dutra


dyke. Same as dike

. Dynagem. Trade name for man-made strontium titanate.

Dysortville Diamond. The unofficial name for a 4.33-carat, fine-quality crystal that was discovered near Dysortville, McDowell Co., North Carolina in the 1870's. It later came into the possession of Tiffany & Co., who donated it to the J. Pierpont Morgan gem collection of the American Museum of Natural His­tory, New York City, from which it was stolen in 1964.

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