Boy,
@Baha_Costero; You and I have the exact same opinion of this plant.
@fiat, Your original stem probably had rot so it 's ok you did not save it. Succulents like this don't tolerate guessing on watering, as they just are unable to tolerate too much water and croak in record time. Growing succulent plants is so unlike the growing of other houseplants. For example, your plant would likely have "survived" being watered 3 times over the winter, and may have thrived with water only once a month, in a dark spot.
Winter darkness and too much water is certain death. I know, because I am terrible at starting succulents. Even knowing what not to do, my intuition is pathetically dysfunctional, and I fail time and again.
@Gasrock's tip for feeling the leaf is brilliant, and a must for me. To grow from a leaf requires even more self discipline with the watering can. Let it be quite dry, give it a spray with a spray bottle once a day, more or less. Others here will better describe growing from leaves, for your plant next time. I found it easier to learn to grow succulents from plants I bought that were in pots no smaller than 4 inches.
