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Tuesday, 18 September 2007
dop marks. Burn marks left on the surface of a diamond by the "fin¬gers" of a mechanical dop. double bevel cut. See BEVEL CUT double-color diamond. A little-used term that refers to a diamond that is one color under artificial (incandes¬cent) light and another color in day¬light, due to strong fluorescence. A technical term for this color change is fluorochromatic. See FLUORESCENCE, FLUOROCHROMATIC, PREMIER DIAMOND, TRANS-ICHROMATIC double-cut brilliant. A rarely used style of brilliant cutting that has a total of 34 facets: four main facets and 12 break facets on both crown and pavilion, plus a table and a culet.
 
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