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Gold-filled Jewelry
Gold-filled is a type of composite material. Composites are formed from two or more constituent materials with different properties that, when combined, create a new material with enhanced properties. Gold-filled material is made by bonding a layer of gold alloy to a base metal core (typically brass, but sometimes copper or silver). This creates a material with the appearance and durability of solid gold, but at a lower cost. Gold-filled material is used to create a variety of products, including: * Jewelry: Gold-filled is a popular choice for jewelry because it's durable, affordable, and hypoallergenic. * Findings and components: Gold-filled is also used to make jewelry findings (e.g., clasps, jump rings) and other components. * Industrial and technical applications: While less common, gold-filled can be used in certain industrial applications where its properties are beneficial. Regulations and Standards In the United States, the Federal Trade Commission (FTC) regulates t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Gold Filled-en
Gold is a chemical element; it has chemical symbol Au (from Latin ) and atomic number 79. In its pure form, it is a bright, slightly orange-yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal, a group 11 element, and one of the noble metals. It is one of the least reactive chemical elements, being the second-lowest in the reactivity series. It is solid under standard conditions. Gold often occurs in free elemental (native state), as nuggets or grains, in rocks, veins, and alluvial deposits. It occurs in a solid solution series with the native element silver (as in electrum), naturally alloyed with other metals like copper and palladium, and mineral inclusions such as within pyrite. Less commonly, it occurs in minerals as gold compounds, often with tellurium (gold tellurides). Gold is resistant to most acids, though it does dissolve in aqua regia (a mixture of nitric acid and hydrochloric acid), forming a soluble tetrachloroaurate anio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
