To easily reforme when needed by firing porcelain and stains at high temperatures at each of respective stages, thereby obtaining gloss and tints having depth and attaining physical and chemical stability.

A plaster model of the fingertip part of a wearing person is formed from an impression taking of this fingertip part and the impression of the main model is taken. A refractory model of the impression picture is formed as a duplicate model. Oxide ceramic mud of particulates is applied to the nail part of this duplicate model and the layer of the solidified particles is formed on the model and is trimmed to the form of an artificial nail reserve base plate of about 0.4 mm in thickness by means of a knife. The model is then fired at about 1,120°C in a furnace. Mixed mud of glass powder is applied to its surface and is subjected again to osmotic firing at about 1,100°C. A porous reserve base plate is penetrated with the glass, by which a high degree of the deflection strength is obtained. A base plate 2 is thereafter obtained by subjecting the base plate to form correction. This base plate is so polished as to comply with a nail of the main pattern and is finished as an artificial nail 1.