Technically the table unmakes the mantle and just gives the pure energy. Or unmakes the immortal. That's why I think Mab made the current WK mantle specifically molded to Harry.
I'm not sure I'd believe the Fae actually made the stone table itself. Seems older, bigger than they are... I've always thought it was the Earth's hearthstone as it were... The stone part of stars and stones...
I have also thought that it is connected somehow to the old stone structure on Demonreach.
