Jewel e.g. ring, marking assistance device for jewelry shop, has plane surface to place jewel to be marked with marking unit, and guide points extending from central point to perimeter of circle related to jewel shape

摘要

The device has a plane surface (1) to place a jewel to be marked, and a series of guide points (3) extending from a central point to a perimeter of a concentric circle (2) corresponding to a shape of the jewel, to divide into a number of preset divisions (4). The guide points are arranged to allow a marking of a mark on the jewel by a marking unit that superimposes central points of the jewel and the circle.