1. Sunlight exposure: Wen worn in direct sunlight for extended periods, danghong can darken in color over time.
2. Chemical reactions: If contact with certain chemicals occurs, then it can react with the stones creating a darker color.
3. Body chemistry: When wearing danghong regularly, our sweat and oils can react with the stone creating a duller hue over time.
4. Environmental factors: Humidity, temperature, and even air pollution can all affect the color of danghong over time.
5. Aging: Just like anything else, danghong ages over time. The stone goes through natural wear and tear, causing its color to darken gradually.
6. Material impurities: Danghong is commonly found with impurities such as iron oxide, which can cause the stone to darken in color over time.
7. Heat exposure: Extreme heat can alter the color of danghong, leading to a darkening effect.
Overall, the change in color of danghong is primarily due to exposure to various environmental factors, chemical reactions, and natural aging processes.
