Your string of tourmalines should be true. Cracks in tourmaline are very developed, generally there are cracks, and some are clean without cracks, but the price is also very high. I saw your photo, there are many textures in it, and there is no cat's eye. I wish I had a cat's eye ~ ~ Although it has a texture inside, it doesn't crack, so it doesn't matter if I wash it with soap.
It is best not to get together with cosmetics when you wear it at ordinary times. There are some substances in it that are bad for jewelry. And it is best not to knock, because there are lines inside, which are easy to crack. Nothing else.
Let's see what others say.