1、What are the water lines in jade, and what is the difference between water lines and jade veins?
The water line is a semi-transparent, straight or nearly straight fine vein-like feature inside jade. The transparency of the water line is usually slightly higher than that of the jade around it. If the transparency appears in a lump shape, it is also called "water dew".
The difference between water lines and jade veins: (Take rubber bands as an example) A stretched and straightened rubber band is called a water line, while a non-stretched rubber band with knots or spirals is called a jade vein.