I'm wondering if I can solder rose/pink gold to Argentium.
I’ll tell you something I have learned quite uncomfortably since I
began my new job with James Binnion a few weeks ago.
If you overheat rose/red/pink gold in close contact with silver, you
will create a yellow gold alloy at the interface. Red/pink/rose gold
is gold and copper; gold, plus copper, plus silver= yellow gold.
I can imagine situations in which this might be quite attractive,
but if it is not the look you want, be very careful how much heat you
apply! Believe me, overheating is amazingly easy.
I have had success in my own work using gold/silver bimetal to
applique’ gold onto silver-- you are soldering silver to silver,
which I find much easier. I don’t know whether you can buy bimetal
with colored gold, however-- I was using 22k yellow. The bimetal is
rich enough in color to create a good contrast, and the bimetal is
much less expensive (and easier to use) than solid gold.