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What is the material of blue jewelry?
Lapis lazuli, chalcedony, blue agate, sapphire, silver, iron, copper, feathers (Diancui), etc.

Jewelry, which used to refer to hats worn on men's heads, now widely refers to birds, earrings, necklaces, rings, bracelets and so on made of precious metals and gems. Jewelry is generally used to decorate the human body, but also has the significance of showing social status, wealth and identity.

1. Early definition; In the early days, jewelry was an ornament worn on the head. China used to call jewelry "heads", such as combs, hairpins and crowns.

2. Modern definition; Also known as jewelry in a narrow sense, it refers to jewelry made of various metal materials or gem materials, which plays a decorative role with clothing. Because jewelry mostly uses rare precious metals and jewelry, it is of high value. In modern times, clothing is mainly woven, and many low-value materials are also used. This is obviously different from jewelry.

3. Broad definition; Refers to decorations made of various metal materials, gem materials, organic materials and imitations, which are used to decorate the human body and its related environment. It can be seen that jewelry in a broad sense has included part of the scope of jewelry, accessories and decorations, or the three are integrated, which is the development direction of today's jewelry industry. With the acceleration of social rhythm, new materials and new ideas continue to enter, making the boundaries of jewelry more and more blurred.