Undersides of leaves by: Jacki Cammidge, Certified Horticulturist
What do the undersides of the leaves look like? Are they silver colored, or rust? If so, my guess would be Kalanchoe orgyalis, or Copper Spoons, or K. hildebrandtii, Silver Spoons. Both very similar, but one of the notable features is the smoothness of the leaf surface, which shows no veining, not even the midrib of the leaf.