Cleaning Corelle plates

[uncola302]

You might try the "softsoap" type cleaner they make for smooth top ranges. I had one with a Corning top-like the Corelle plates-and it removes stains without harming the design. It's not very expensive and it lasts a really long time. Use just a small amount and your plates will look new. I use it on all my corning ware as well as the dishes. One bottle last me over a year and it costs around $5.00 in my area.

[CSinbad]

An Oxi Clean type product might work.  I would test it on something that you don't mind getting ruined as it could remove your design.  

[wizbucks]

The outer rim of my dinner plates have a yellowish stain and I cannot seem to remove with anything.  Any suggestions?