1. Appearance: the surface of snowflake silver is covered with small white lines, similar to snowflakes, while 999 silver is usually silvery white with no snow patterns.

2. Composition: snowflake silver is an alloy, the main components are silver and palladium, and the fineness is generally around 925; 999 silver refers to pure silver with a silver content of 99.9%.

3. Hardness and toughness: Because it contains a certain amount of palladium, snowflake silver has better hardness and toughness and is more suitable for making jewelry; However, due to its high purity and soft texture, 999 silver is easy to wear, oxidize and blacken.

4. Use: Snow silver is often used to make jewelry, such as necklaces, earrings and rings, because of its hardness and toughness; 999 silver is often used to make scientific instruments and electronic components.