I have used this tutorial before. It works for pottery, ceramic, and china: http://www.lakesidepottery.com/Pages/Pottery-tips/How-to-repair-chipped-pottery-china-ceramic-step-by-step.htm
Linda....Can you send a picture please? Thanks
Once it's chipped, it's buggered. Can't use the same pottery mix ot colour or firing.
Do you have the chip to epoxy back into place?