[Moltke]

I have made macroscopic (say, 1 inch scale) metal single crystals under laboratory conditions when studying metal physics. They are exceedingly fragile. One little tap will make a metal single crystal polycrystalline right quickly. (Minerals are something else completely.)

Whatever they are doing, macroscopic single crystals is not it.

[Red Badger]

Well, this is South Korea, so it may be a little fudging going on...............