How to prevent basalt stones from changing color

Friends who have used basalt stones may know that they are a type of granite material with various processing types. However, basalt stones may discolor during use. What are the reasons for this? What measures do we have to prevent stone discoloration? Let's learn together below.
1. The surface of water will have many fine pores, and the capillary surface will also be more obvious. Therefore, when basalt stones absorb water and are exposed to sunlight, this situation will occur.

2.Basalt stones will swell when heated,but shorten when cooled at night,resulting in thermal expansion and contraction.The mineral properties in the stones are different,and the swelling coefficient is also different.
3.Under suitable water temperature conditions,some plants will attach to the surface of basalt stones,causing them to form color spots and leading to erosion.
Through the above introduction,we have learned about the preventive measures for discoloration of basalt stones,hoping to be helpful for everyone's future use.