| 摘要 |
<p>The utility model relates to decorative art and can be used to provide for the biosafety of jewelry and/or metallic costume jewelry. The coating comprises layers of dental porcelains, namely an opaque porcelain which adheres well to the jewelry material, and dentin porcelain, successively applied to the jewelry. The coating can have a third layer of enamel porcelain, and the opaque and/or dentin porcelain can contain a given amount of coloured pigments.</p> |
