PURPOSE: To provide the surface of ornaments with a sweat resistivity through grading by irradiation of laser.

CONSTITUTION: This invention relates decorative article such as ring with laser irradiated on the surface. The irradiation of laser capable of local treatment permits grading confined to required points, while the features of the rsw material can be made best use of at other points. Therefore, maintaining ornamental value to the fullest, the sweat resistivity can be improved at required points. The laser irradiation is applicable in any at atomoaphere, thus ensuring treatment. at optimum according to the material of the ornaments. This is highly effective for the surface treatment of ornaments