If its a stock ring (size 6?) going up 8 sizes, I could pretty much
guarantee its not available in a size 14 except by very special
order so I doubt anyone would normally stock anything near that size.
Time delay, additional expense, he’d rather sell from inventory.
Look at it this way… if you can pull this off most of the time,
you make yourself more valuable to the shop.
Something like a quality weight solitaire should be no problem, just
make a dovetail joint for extra strength. If its some more convoluted
shank or extremely heavy or extremely light it gets more difficult.
Still almost anything is doable if you throw enough time/money at it.
The question becomes do you(or your boss) really want to? The more
stress you put on the ring the more likely it will be to have
problems, either now or post sale. Any cost savings your boss is
drooling over now may be offset if/when stones pop out in use, not to
mention egg on face(mostly your’s I’m afraid).
I’ve done stuff like this, including the near impossible and
conventionally thought of as ill advised. Once in a awhile its fun,
but usually not. Sometimes you just have to do it though.
The type of ring you describe is indeed a challenge. Might be good
to explain to the manager that for a nice job you’d have to replace
the underbezel or the gallery or do this or do that and tell him it
would cost $X now and maybe $Y later when the customer brings it
back, which might give him/her second thoughts.
If the stones allow, anneal and when changing the base circle of the
shank go slowly, watching out for crinkles and whatnot so you can
catch them before they cause catastrophic failure. For hollow thin
stuff have some dapping punches handy, maybe along with a lead
block, you might try filling the hollow with pitch before you coerce
it into shape, maybe while the pitch is till a bit warm, maybe not,
Oh, and good luck.