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what ever you do, do not pry or "whack" to try and free the stone. More often than not the stone will fissure leaving shards of stone still glued to the bottom of the box. Worst case, shatter...

The answer is "yes" kind of sort of.

SOME people can feel the difference. I know I can. and the edge off the three stones mentioned will be rather noticeable to me.

There is some...