If I was shooting close-ups for a living, I would look at 'Macro Photo MP-E 65mm f/2.8 1-5x Manual Focus Lens for EOS'. Manual focus with still subjects is not that difficult when using with a camera that has flip-out screen.
I have not used this lens but have seen amazing results from others who use it. It is important to try out and judge yourself if it suits your needs. It won't suit video needs and you'll need to switch lenses if you're doing macro shots and video back and forth.
If your 100mm macro does everything you need, then this is redundant.
Mp-e 65 is for extreme macro, greater than life size. Unless you need fine details on jewelry not helpful