Vygies come in all shapes, sizes and colours. These little ones I found on the mountain above Matatiele on a visit to the Matatiele Mountain Lake. I have two types of vygies in my garden, both creeper type plants with tin green leaves. This specific one has ticker and rounder leaves and look a more like a typical succulent. A little search on the internet gave me the following:
Stone plants - Aizoaceae or Ficoidaceae is a family of dicotyledonous flowering plants containing 135 genera and about 1900 species. They are commonly known as stone plants, carpet weeds or vygies.