Posted by Rick on August 18, 2002 at 13:21:31:
In Reply to: Yellow silver? posted by Anonymous on August 18, 2002 at 13:08:46:
That's tarnish. Tarnish first shows up as a yellow tint, then brown before it turns black.
Read in the fourth paragraph of the link below: (or cut and paste the following)
http://www.silversmithing.com/silver/care.htm#Cleaning%20Silver
Rick