How to identify the quality of purple sand cups?

1, touch by hand: Although a good teapot feels frosty, it will not have a special graininess. The graininess of a real teapot is a very slight feeling.

2, weighing: teapot is made of purple sand, the density of purple sand is relatively high, so the quality of teapot will be lighter, weighing by hand feels lighter than ordinary pottery pots.

3, listen to the sound: the sound of a really good quality teapot will not be so brittle, just a little boring, so when you buy a teapot, you should knock it by hand.