FIELD: treatment of semiprecious-stone products of composite profile. SUBSTANCE: device has fixed stop, driving abrasive wheel, and platform mounting blank holder coupled with template. The latter functions to set holder in composite motion within definite section of path. Additional holders carry additional composite templates of different shapes for continuous planetary movement about common axis and periodic engagement with fixed stop. Abrasive wheel peripheral profile corresponds to profile of cabochon top. Platform is mounted for displacement in plane perpendicular to butt end of abrasive wheel. EFFECT: enhanced productivity, enlarged functional capabilities of device. 3 dwg
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