Normal crypto is a code-based asset built to be used as an apparatus of trade. Additional coins can be created through mining. Anyone can do this if they've access to a device. Mining uses a large amount of time and electricity, however. A high-powered computer is also needed, to mine profitably. However, Ripple is a centralised asset, which is unmineable. A limited number of tokens were created by the firm and this amount will never be added to.