Let's see if this works
105mm Macro:
This one is the closest focus I could get on the 105mm:
And this one is the 70-300mm zoom (pretty much closest focus on this lens):
The macro focuses to 1ft, while the zoom only goes to a minimum focus of 5ft, which is why the perspective changed as I had to back up to get focus for the last picture. I also had to stop down a lot to get focus over the whole bead with the macro (means long exposure and steady tripod).
Everything was a bit wacky as I was using the lenses on a Sony body with an adapter that wouldn't do auto exposure or focus (need to read the manual on that still).
Anyhow, unless you like long working distances, look for a macro-ish lens with close focus and 1:1 (if you can get it) or 1:2 or 1:4 magnification. I'm sure the Sigmas, Tamrons, etc. can do something like that for cheaper.
Hope you're not more confused than you started
Cheers!