|leakage Ledo Frozen Fire Lee Diamond Le Grande Conde' Diamond|
|Written by Administrator|
|Friday, 21 September 2007|
leakage. Light leaving (refracting from) an optically dense medium is referred to as leakage. Planned leakage is light departing a faceted gem from the crown to the eye. Unplanned leakage is light escaping a faceted gem from the pavilion, thereby being lost and not returned to the crown, and subsequently lost to the eye. See brilliancy, critical ancle, refraction, TOTAL REFLECTION.
lean pipes. South African diamond pipes that cannot be profitably worked. See pipe.
Ledo Frozen Fire. A trademarked name for colorless synthetic corundum.
Lee diamond. The unofficial name for a 4.50-carat distorted octahedron that was found in Lee Co., Alabama, about 1900. It was owned and displayed by the American Museum of Natural History, New York City; it was stolen in 1964 and never recovered.
Leeuwbosch. A minor alluvial diamond deposit in the Bloemhof area, Transvaal Province, Republic of South Africa. The yield from this digging is insignificant. Leeuwfontein. An alluvial diamond deposit in the Wolmaransstad area, Transvaal Province, Republic of South Africa, the output of which is negligible.
Leeuwkraal. A minor alluvial diamond deposit in the Ventersdorp area, Transvaal Province, Republic of South Africa. This digging makes a very insignificant contribution to total South African alluvial production.
Le Grande Conde' diamond. The Grand Conde is one of the most unusual of the world's notable Diamonds: a light pink, pear-shaped stone of 50 carats. Agents of Louis XIII are said to have bought the stone in 1643, after which the King presented it to Louis de Bourbon, Prince of Conde, who had distinguished himself as Commander of the French Army in the Thirty Years' War and
who became known as the Grand Conde'. Until his death in 1686, the Prince was known as an enthusiastic patron of the arts and an ardent admirer of various charming women, one of whom described him as a much more effective and able general than paramour! The diamond remained in the Conde' family until the Due d'Aumale bequeathed it to the French Government in 1892. Today, it is on display in the Musee de Conde in Chantilly, where, according lo the terms of the Due's will, it must always remain. It is also known as (he Conde diamond. Also named Grande Conde.
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