Whew! Tough one, Ejassalim! Is it possible to get a close-up of where a leaf joins the stem? That may give me a clue as to which plant family to look into. If there are any flowers, that will help, too.

no flowers

Hmm...my best candidate so far is Katuk (Sauropus androgynus), but I'm not completely convinced, since I can't find a variety with that pattern of variegation. I'll keep looking! :)

thanks tugbrethil.

I have katuk with me. This one is different, no fruits or flowers, hard leaves.

Drat! Still looking, but not finding. I'll keep at it, as time allows.