My 14k yellow alloy uses 6.666...% zinc. Whenever this metal is heated, a little zinc evaporates. Likewise I am sure that virtually all 14k yellow alloys use zinc. Speaking of costing pennies, todays pennies are copper plated zinc and in a pinch, I have used them to make alloy.
In a PINCH? Does this mean you actually PINCH your pennies?
Sorry all, I couldn’t help myself. (I almost used “resist”, but
resisted the temptation. Didn’t want anyone to suggest that I
scratch my etch!)
Memphis, Tennessee, USA
(About halfway between the Gulf of Mexico
and Canada, on the Mississippi River;
home of Elvis and W.C.Handy)