Thank you both for your responses! Most of what's stopping me is that large, solid hematite masses are kind of expensive (2.6" hematite sphere is 1.7lbs and
$56). Also just realized that a 1.7lb sphere is gonna be too heavy for most mag-lev platforms (most only hold about 350 grams, and 1.7lbs is 700+ grams).
What are your thoughts on gazing upon a group of smaller, suspended mirrors? Like a group of
these floating about four inches off the ground? I suppose the answer is the same; why not try it?
That's good to know about pyramids vs spheres, it had never occurred to me but it makes a lot of sense.