Allergic Reaction to Nickel Alloyed White Gold Jewelry

White gold is routinely alloyed down with nickel. Nickel causes allergic reactions in a lot of people.
It's probably showing up now, because your ring was plated in rhodium (the whitest member of the platinum family) when you bought it. This is normal, as white gold always has a little warmth to it, so it is almost always plated in rhodium.

 

The rhodium has worn off. The white gold, alloyed with nickel is in direct contact with your skin. You are reacting to the nickel. One easy solution is to bring the ring in to the jeweler where you purchased it and have it replated with rhodium. Or, you could trade the ring in for a white gold ring that does NOT contain nickel, a palladium ring or a platinum ring.
The metal rhodium is essentially inert to the skin, hypoallergenic, no reaction. What the reaction could be is a basic metals reaction and that SHOULD NOT be happening if the rings have a real rhodium plate.

Silver Earrings

My suggestion? Contact QVC and tell them of the problem. They should either give your money back or replace the item with one with a real rhodium plate!
Green is a reaction generally to base metals, such as copper, etc., which are either preplate(done beneath the rhodium on metals like silver) or part of the the meatal alloy the ring is made of.

Allergic Reaction to Nickel Alloyed White Gold Jewelry