PURPOSE: To obtain an ornament having superior hardness, toughness, wear and corrosion resistances and a significant ornamental effect and maintaining the appearance by hardening a rough body of a Ti-base material for an ornament by heat treatment and by forming a high hardness surface layer of a compound contg. Ti by vapor phase plating.

CONSTITUTION: Ti or a Ti alloy is hot or cold forged, milled or trimmed, and ground to form a rough body for an ornament such as a case for a wrist watch, a bracelet or spectacle frames. The rough body is nitrided, oxidized or carburized to form a diffusion layer and a hardened nitride, oxide or carbide layer, and/or the rough body is age-hardened to increase the hardness of the whole body. A high hardness surface layer of a compound contg. Ti is then formed on the rough body by vapor phase plating.