1, color, black and green seed material color is relatively uniform, there will be no obvious color difference. The color of blue and white seed material presents black and white texture and pattern, which has obvious directionality.
2, texture, black and green seed material texture is relatively uniform, there is no obvious directionality. The texture of blue-and-white seed material presents a unique blue-and-white texture and pattern, which has obvious directionality.
3, oily, dark green seed material has high oiliness, delicate feel and lubrication. However, the oiliness of blue-and-white seed material is different because of its composition and processing technology, and it is rough.