PROBLEM TO BE SOLVED: To solve problems in that conventional rose quartz has many cracks in and on it, rose quartz with cracks in it are produced as is, as a design-less product despite its cracks, a crack on it gives rough texture, resulting in an unsatisfactory product due to lacking of smoothness, and even if rose quartz is processed into a given shape from a raw stone, a half of it cannot be produced on a commercial basis.;SOLUTION: The present invention is characterized by impregnating a crack in rose quartz with colored designing means. By impregnating the crack with the designing means of, for example, blue, green, or such color, which differs from the color of the rose quartz, and by smoothing a crack in a surface by use of the designing means, the foregoing problems are solved.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT
展开▼