That one of Brian's is a beautiful color, and the next is legendary. These are a bit simpler.
But there's still some pink on one, at least (I think the big one is 1 3/4").
I calculate really close to 5/8" too, Steph, and I attribute any significant error to that little nub. I also agree, the volume of spheres is tricky to visualize. Good thing we have math, huh?
Yup, and you can find them all if you look close.
But I know you want to do the volume calculations, Steph.
Come on, how big are the mibs it's made from?
Double ingots, found in Illinois together long ago, with matching marbles I've found since.
This sextuplet was in the same group and measures a near perfectly round 1 1/8" (w/o the nub ) - it's Bill's now.