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Tuesday, 18 September 2007

Droogpan. A small alluvial diamond deposit in the Ventersdorp area, Trans­vaal Province, Republic of South Af­rica. Total annual production is negligi­ble.

Droogveld Sluit. An ancient, gravel-filled fissure discovered at Droog­veld, Vaal River Estate, Republic of South africa, in 1912, that was a pro­lific producer of Diamonds. It was two miles long, about 100 feet wide, and from 20 to 40 feet deep. During the first 18 months after its discovery, the output totaled more than 77,000 carats, valued at £463,770. Total production for one recent year was less than 300 carats. drop cut. Any form of cutting suita­ble for use in pendants, earrings, etc. such as the briolette, or pear shape.

dry diggings. A term that refers to pipe diamond deposits, as opposed to alluvial, or wet, diggings.

ducat. A small, distorted octahedron on which one facet, the table, has

been polished. Originally called the Duke Cut; also known as "ducats," "ducuts" or merely "dukes."

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