|Master Cutters' Association of South Africa Matan Diamond millimeter Millionaire Diamond|
|Written by Administrator|
|Friday, 21 September 2007|
Master Cutters' Association of South Africa. An organization of diamond cutters in the Republic of South Africa.
master (or key) Diamonds. Fashioned Diamonds of known color grades that are used as comparison stones when grading other Diamonds for body color. Also sometimes called a diamond yardstick. See diamond-yardstick
HOLDER, COLOR GRADE, BODY COLOR, DIA-MONDLITE, CIA COLOR-GRADING SYSTEM, AGS COLOR-GRADING SYSTEM, COLOR GRADER.
Milford diamond. A 6-carat diamond crystal of fine color that was found near Milford, Clermont Co., Ohio, in 1879. Its present whereabouts is unknown.
milky diamond. A diamond that has a milky or hazy appearance. This condition usually is caused by clouds of exceedingly minute inclusions. Excessively fluorescent diamonds sometimes have a milky appearance in daylight.
mill. (1) In the diamond-cutting trade, a term sometimes used for the lap, or scaife, on which Diamonds are ground and polished. (2) In diamond mining, the building or buildings and adjacent establishment in which Diamonds are recovered from kim-berlite by crushing, panning, jigging, and washing over greased tables.
millimeter. Metric system unit of length based upon the meter (meter = 39.37 inches) as a standard of measurement. One millimeter (abbreviated mm) equals 0.001 meter. Approximate U.S. equivalent 0.04 inch equals one mm. There are 25.4 mm per inch.
millimeter micrometer. A precision caliper gauge that measures the overall dimensions of unmounted fashioned gems accurately (to 0.01 mm) but less conveniently than dial gauges. The new millimeter micrometer features a direct reading digital scale for quick, easy, accurate measurement of stones from 0.01 mm to 25.50 mm.
Millionaire diamond. See recent diamond.
Mimosa. A minor alluvial diamond deposit in the Schweizer Reneke area, Transvaal Province, Republic of
South Africa. Less than 100 carats was reported from this deposit in one recent 12-month period.
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