1. Composition: Rhodium plating is plating a layer of rhodium on the surface of precious metals, which is more expensive than gold and silver, so the price of rhodium alloy plating will be more expensive than silver plating and gold plating. However, gold plating is to attach gold to the metal surface, which needs to be coated with a layer of gold and mercury first, and then heated and evaporated to form a thin layer of gold, so its price is relatively low.

2. Process: Rhodium plating and gold plating are also different in process. Rhodium plating requires a layer of rhodium plating on the surface of precious metals. This process requires certain technology and equipment, and the requirements for the process are relatively high, so the price will be relatively high. The gold plating process is relatively simple and the price will be relatively low.

3. Uses: Rhodium plating and gold plating have different uses. Rhodium plating is mainly used in corrosion-resistant and wear-resistant occasions, such as jewelry, tableware and decorations, so the price will be higher. Gold plating is more suitable for occasions that need high aesthetics and high value preservation, such as jewelry making, so the price will be lower.