Leveridge gauge Levinson Prospection Liberator Diamond
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Friday, 21 September 2007

Leveridge gauge. A millimeter dial micrometer, designed by A. D. Leveridge, for measuring both mounted and unmounted Diamonds and colored stones of various styles of cutting. An accompanying set of tables is used for translating mea­surements into weights. It is the most accurate of the gauges designed specifically for weight estimations.


Levinson Prospection. A small dia­mond-mining concern that works diamondiferous terraces south of the Kunene River, which forms the fron­tier with Angola, in the extreme north of South-West Africa.

Liberator diamond. In honor of Simon Bolivar, nineteenth-century liberator of Venezuela, who was af­fectionately called El Libertador by his countrymen, this top-quality 155-carat diamond was given the name Liberator. It was discovered by three miners in 1942 in the Gran Sabana diamond-bearing region of Venezuela. Purchased in 1943 by Harry Winston, New York City gem dealer, it was cleaved into two pieces weighing 115 and 40 carats. These cleavages, in turn, were fashioned into four stones: three emerald cuts of 39.80, 18.12 and 8.93 carats, and a 1.44-carat marquise. Fifty-six per­cent of the original weight was lost in the cutting process. Winston used the three smaller stones in an elabo­rate clip and sold the 39.80-carat stone to Mrs. May Bonfils Stanton, Denver, Colorado, heiress and phil­anthropist, in 1947. In 1962, he ac­quired the stone a second time, purchasing it from the New York auc­tion galleries of Parke-Bernet, Inc., from the jewelry estate of Mrs. Stan­ton for $185,000. The Liberator is set in a platinum ring with two tapering diamond baguettes.