Is there a significant difference between the hardness properties of the Nickel and the Palladium white gold especially when using emeralds??? Should I continue to worry about the stones falling out? Could this be a problem with the jeweler that I chose to make the ring?
Yes, there is a significant difference in hardnes between Ni White
gold alloys and Pd White gold, but it seems to me that your problem
is much more the difference between an experienced jeweler/stone
setter, and a not that good one…
A good jeweler would fabricate the ring correctly, to receive the
stones that the experienced stone setter would make sure would be set
there forever…no matter the alloy used to make the piece.