Patience, patience--all will be revealed. . . . or not. . .
Here's #3. Not as pretty as the first two--too much conciolin on the surface, yet with a revealing chip in said conciolin. The largest nodule measures about 6.8mm X 5.4mm and the pair together above the largest measures about 6.5mm X 4.2mm.
I'll try to get back to this tomorrow with some more photos that I think show the origins of these little objects. Looking closer at this one, #3, I can see that it bears further study. It may have more to show us.
J Marcus
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