I be/was well know with the Ceropegia woodii . This species I see for the first time now. I found this one in the flower shop and like it so I buy them. It was not expensive , 4 € = less then a Big Mac.
P.s. The flower is about 2 1/2 cm = 1 inch
A beautiful shot of this intriguing flowering plant -- so pretty and interesting --I am sure you will enjoy many a happy hour tending and photographing it !
Ian