Incapable of being replicated.

What is the meaning of Irreplicable?

adjective. incapable of being replaced; unique: an irreplaceable vase.

What is a word for something that Cannot be replicated?

Something that is inimitable is, literally, not able to be imitated. In actual usage the word describes things so uniquely extraordinary as to not be copied or equaled, which is why you often hear it used to praise outstanding talents or performances.