Talk about fat leaves. And the fantastic color that goes with them. Also known as "Lavender Pebbles" or the "Jewel-Leaf Plant", it is from theSierra Madre Occidental mountains of west-central Mexico and is fairly rare and well worth growing. It can be used as a trailing plant or as a hanging basket (it's native to cliffs).
The flowers are typical Graptopetalum flowers, quite intriguing in their own right. I didn't have a good photo of the flower so I'll include this one from the internet.