You said you have an iPhone.
Try the following for iPhone photography of coins. Our member Darth Morgan has come up with an incredible set up.
http://goccf.com/t/160092Note Darth was going for (and made) "perfect" pics. I use a much less sophisticated version. I put my iPhone on a stack of books (or whatever). I have no special light hood, just a couple of desk lamps.
But I am not out for perfect (color/luster) pictures, just pics that will show details. My throw together system based on his works well for that. As an example:

I had two desklamps pointed at this and looked at the image onscreen to make the lighting look presentable.
Center the coin on the screen, set a 2 second timer so you don't move the iPhone when you take the pic, tap the screen to get it to focus where you want on the coin, take the pic.
I take several just to make sure.
Hope this helps.
How much squash could a Sasquatch squash if a Sasquatch would squash squash?
Download and read: Grading the graders
Costly
TPG ineptitude and No FG
Kennedy halveshttps://ln5.sync.com/dl/7ca91bdd0/w...i3b-rbj9fir2