Hi Frillylily also if it is truly a sempervivum - they are not poisonous to humans, even if they are eaten, in small amounts. They used to make skin tonics using these plants. So totally safe to touch.
But like other's have said a picture with help the most for us to guess what it is!
If it is a catcus, they too can have soft fuzz on them, if you touch it gently you won't get pricked.
The fuzz on a sempervivum will be soft though and not prickly
Best to you!
