There is likely nothing wrong with the silver piece you have made.
More likely another metal - copper, or brass was suspended in your
pickle and plated to the surface as the result of an electrochemical
In a well used pickle where more than one metal is present, the less
noble metal tends to bond to the nobler metal. Copper to silver,
silver to gold, etc. “plating” the surface.
If you want to test this, find a piece of copper or some real copper
pennies (most modern pennies are filled with base metal and will not
work), and let them cook in the pickle overnight or if you have time
Using a pair of steel tongs or steel locking tweezers dip a silver
object in the pickle. The presence of steel causes an
electrochemical reaction which will cause the suspended copper in
the pickle to quickly plate to the silver. Do this in a well
ventilated area because the fumes are noxious.
The plating buffs away easily. If this is not the case, and your
silver has truly turned to gold, please send me your recipe!
Best regards and wishes,
M. M. Rogers Design