After completing actions such as unlocking, private messaging, gifting, and recharging on this platform, the operations cannot be reversed or withdrawn. Diamonds have no expiration date, and you can use them gradually for activities like watching live broadcasts, videos, and interacting with hosts. If you temporarily don't use them all, there is no need to worry about the diamonds disappearing; you can safely keep them for future use.

All relevant details are explained in the terms of service