FIELD: personal use articles.
SUBSTANCE: invention is designed for being used in jewellery industry. The method for faceting diamonds with a culet involves faceting of a round-shaped diamond faceted so that to form a culet; within the culet, one grinds out and polishes an internal pyramid with a polygon-shaped base the sides whereof are parallel to those of the culet polygon. The pyramid is ground out and polished at the angle between opposite sides equal to 98.5°.
EFFECT: ensuring complete reflection of sunbeams from the culet thus creating additional brilliance of the stone.
2 dwg
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