|Written by Administrator|
|Tuesday, 18 September 2007|
Doornbult. A minor alluvial diamond deposit in Wolmaransstad area, Transvaal Province, Republic of South africa. This mine contributes very little to total South African alluvial production.
Doornkloof. (1) One of the more important alluvial diamond deposits in
the Barkly West area, Cape Province, Republic of South Africa. Production for one recent year totaled approximately 11,000 carats. (2) Also, the name of a small pipe mine in the same area, owned by Treasure Trove Diamonds, Ltd.
Doornlaagte. A minor alluvial diamond deposit in the Barkly West area, Cape Province, Republic of South Africa. Current production is negligible.
dop. Any device that is used to hold a diamond during the sawing or faceting process. One type of dop consists of a metal cup on the end of a flexible rod that is filled with a low-melting-point lead alloy in which the rough diamond is held. Another type, called a mechanical dop, is a small adjustable vise that holds the diamond at the proper angle on the polishing wheel, or lap. Although the shellac-and-wax holder for both diamonds to be cleaved and for the sharp used to groove diamonds preparatory to cleaving is usually called a cleaver's stick. It, too, is sometimes called a dop. A cutter's
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