This grower is fairly sure of this plant identification.
Rooted cutting in a 5cm pot. Rosette forming plant with brown spotted grey-green leaves. Clusters of white flowers from pink buds in spring
Crassula genus (Jade plant). These are perennial evergreen, succulent shrubs and sub-shrubs. There are about 300 species in this genus. The flowers are produced in terminal panicles or clusters.
They are frost hardy to frost tender, min 5-7C. They will prefer full sun while others like partial shade. Grow them in very well drained soil with a little water in the winter. Most are easy to grow.