In terms of appearance, sapphire braces are superior to ceramic ones. Sapphire is completely transparent, like glass, whereas ceramic is white. Teeth move more slowly with aesthetic braces than with metal ones, with no significant difference between the two types of aesthetic braces. As materials, both are comparably durable in the mouth and very good – in other words, they don't break easily. If both types are suitable for you, the choice between them is mainly a matter of appearance and cost.
This answer is for general information. Your own case needs an examination by an orthodontist.