One of the leaves had fallen off and started putting out roots and leaves all by itself. Really. It's that easy. Take a leaf, lay it on some dirt. 
Wait. Then pretty soon (in plant time) this. 
Love it. Jade plants are not only wicked easy to propagate, but they are eay to care for and can be turned into bonsai as well.
I'll do another post at another time about care for them.
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