No it won’t work, the silver will eat up the gold simply because the
melting point is lower that that of any kt gold you may want to use.
Fusing is a great way to learn about how quickly you must move the
torch to allow the silver in liquidus to"grab" the gold appliques,
etc…you may want to experiment with…Mostly what you’ll get if the
gold is anything but very thin bezel stampings, or foil is a hole
where the gold was, and the silver consumed it- Though it could be
removed with a bright dip in the case of a foil, or thin applique’,
it is not worth the time involved to get a result that is pretty well
standard and common…It will definitely not survive a long burn-out
cycle…Ashanti casting though allows for the gold to be covered with
a refractory material, clay, charcoal and dung mixture-
much like a coat of ochre- but it will still leave a lot of post
casting clean-up to be done around the seam that must be pretty near
perfect if you want to try the process…and even then the results
are not always 100% predictable, nor can you tree many pieces, or
rather make a small scale production run with a wax model and 2
pours-1 gold, then blocking that off with a mixture (minus the
charcoal in this case as is used following the Ashanti method), and
the other in silver- far too much time spent when its easier done
differently with predictability being the key- at least I like
predictability- if you don’t then it may be worth your time to
experiment with a direct casting method that isolates the two metals
by creating two different pouring gates and sprues anyway gold is
still a bit too high to experiment with without loosing a good bit of
what you would need for your pieces…
rer