Short answer, no.
Long answer, still no, but here's why: Electroforming is a multi-step process by which copper is grown around the stone in a 6-12 hour chemical bath. This creates the setting. By removing the stone from the setting (i.e. breaking a ring) and attempting to reset it, we not only have to completely remake the ring, but also risk damaging the stone.
We happily work out exchanges for a different ring instead, as the ring that doesn't fit you would fit someone else!
