It feels good. There are many of these in Donghai, Jiangsu Province, which can be bought online.
You can search in TB or Baidu: Donglai Jewelry.
The crystal gravel made in this shop is natural, cheap and easy to use, but the overweight postage is more expensive if it is far from Jiangsu Province, which is a disadvantage. The store said that Jiangsu, Zhejiang and Shanghai all include postage. I was in tears. . You can drive directly to pick up the goods. I took a trip by the way. . .