Today, just a customer from Germany asked me how to distinguish between sapphire glass and mineral glass. Because my client is just starting his brand in 2023. So there are some knowleges that are not well understood. So, I explained the easiest way to him. Easy to understand, true and reliable.

We only need to drop a drop of fresh water on the glass, and we can directly see from the appearance that these two points of fresh water have different shapes in sapphire glass and mineral glass respectively. Then you shake it slightly again, and the fresh water droplets on the mineral glass will immediately disperse. The water droplets on the sapphire glass are tightly condensed into the shape of a drop, there is no difference from the beginning. Now, do you also understand? Comments are welcome.