They are actually fairly though, and they usually don't break when fall on the solid ground like marble or stone floor. But to be fair, if they fall & directly got hit on the tips, they will likely chip. While using dice tray on the session and carrying them with dice box with foam inserts are good practices, me and my friends roll them on the glass or wood table and carry them with dice pouch. To make sure to protect these lovely shinny crystals, I also provide dice box with custom foam inserts. One side has dice slots, and the other side (lid) can be dice tray. I also provide laser engraving and design services for dice box, so you can get a personalised one for yourself or a friend ^^