Gold products are special, and the gold ornaments of gold shops that operate normally in the market must be tested before they can be put on the shelves. As a well-known brand, Chaohongji must strictly follow these requirements.
Not only that, each gold jewelry will have a corresponding pure steel seal for consumers' reference. For example, Chaohongji's gold bracelets are all marked with au999, indicating that their purity is 99.9%, which will not be lower than this purity.
Matters needing attention in buying gold ornaments
1, weighing. If the object is gold, it feels heavy, which is what people call "gold falling into the hand", and vice versa.
2. Look at the color. Pure gold will shine brilliantly in strong light, which other metals, including copper, do not have.
3. Review phonology. Gold jewelry was thrown on the ground with a plop sound. The falsetto is sharp and bright, jumping higher than gold.
4, folding soft and hard. Gold has the characteristics of good ductility and low hardness. Pure gold is very soft to fold, and copper bars are very laborious to fold.
5. Use acid. Gold is insoluble in acid, but it will react with acid solution because it is mixed with other active metals such as copper.