Its internal materials are not precious metals such as gold and platinum, but some alloy materials such as aluminum, copper and zinc (also covered with silver and gold). The surface of these materials is wrapped with a layer of gold or K gold, which wraps the internal materials like wrapping paper, thus playing a decorative role.
Extended data
Gold plating is divided into two categories: one is homogeneous material gold plating, and the other is heterogeneous material gold plating. Gold plating of homogeneous materials refers to gold plating on the surface of gold or K-gold jewelry. Play a role in improving the brightness and color of jewelry. Gold plating of heterogeneous materials refers to gold plating on the surface of non-gold materials, such as silver gold plating and copper gold plating. The function is to improve the luster and texture effect of the raw material imitation gold metal, thus improving the ornamental effect of the whole jewelry.
Generally used for larger ornaments, such as gold-plated rings, gold-plated bracelets and so on. When the amount and purity of precious metals in gold-plated jewelry are expressed as110 14K, the fraction refers to the ratio of the thickness of gold foil to the thickness of matrix, and the purity of gold foil is14k gold; The symbol 14KF indicates that the surface of the jewelry is plated with 14K gold, and the thickness of the precious metal on its surface has been stipulated by industry standards.