There are numerous factors influencing the price of sesame grey stone, as the price varies depending on the location of the same type. Consequently, the thickness of the processed stone also differs. Beyond thickness, other factors affecting sesame grey stone prices include size and brightness. How do we determine the value of the stone? Here are some methods.

The sesame grey stone should have even thickness, accurate corners, all corners should be right angles, and the edges should have distinct machine marks or chipped edges. The brightness should be good. The surface should be free of pockmarks, and the patterns should be uniform; there should be no obvious discoloration, and the color variation should be consistent. The internal structure should be tight without any cracks. Two identical samples should not be easily broken when they are碰撞. The surface of the sample should feel smooth with no roughness and no obvious concave-convex feeling. The color of the sample should appear pure and not turbid to the naked eye; there should be no plastic-like粘稠感 on the surface, and no fine pores on the back of the board. There should be no pungent chemical odor. The surface of the board should not show any noticeable scratches when scratched with a fingernail. The price of this sesame grey stone is generally medium to high.

When the price of sesame gray varies, we notice that the surface luster of the stone is different, with some appearing brighter and others darker. So, what factors affect the luster of the stone surface?

1. Post-crystallization, the aging resistance of the crystalline layer.

The amount of powdering and scratching on the irregular stone surfaces, as well as the varying degrees of reduced crystal luster on the stone surface.

When surface calcification reaches a certain limit, the crystal brightness on the stone surface decreases to varying degrees.

Surface brightness variations lead to different crystalline effects.