2. Texture test
Genuine silk of lower ply can be easily threaded and pulled through a wedding ring because silk is naturally flexible and smooth. On the other hand, artificial silks would scrunch up and would be impossible to pull through
3. Lustre test: The color on the surface appears to change as the angle of the light changes. Artificial silks, however, gives a white sheen no matter what the angle of light falling on it. It is shimmering. The shimmering appearance of silk is due to the triangular prism-like structure of the silk fiber, which allows silk cloth to refract incoming light at different angles, thus producing different colors. This “shot” effect gives a surface that “shines” and appears to change color as the angle of light on it changes. Synthetic fabrics shine white, no matter what the angle of the light.