Agate is a kind of gem commonly used for inlaying jewelry and carving handicrafts. Agate has natural color and post-processing dyeing. Natural colors are mainly red, amber and white. Among them, red is the best.
Most agates are opaque or have poor light transmittance. Only a few are transparent, and this is the most precious agate.
Real agate is opaque
not always.
Agate will change after being worn for a long time, and become particularly round and smooth. Some will change color, or something similar to blood silk will occur. This is actually a physical change, which has nothing to do with non-material phenomena.
The color change is generally from light to deep, which is caused by long-term contact with people during wearing. What's more, things that have been rubbed for a long time will form an oil film on the surface, and the places where the stone pillars in tourist attractions are often touched will also become bright black.