In
The Chronicles of Thomas Covenant the Unbeliever,
white gold is the source of the “
wild magic” of apparently unlimited power. It exists nowhere else in the Land.
When Thomas Covenant enters the Land, he is wearing his white gold wedding band. At first Thomas does not believe in the Land, but despite this because of the power he wields as bearer of the white gold ring he is, however unwillingly, drawn into the struggle to destroy Lord Foul and save the Land.
The Chronicles of Thomas Covenant the Unbeliever, is a double trilogy, written by Stephen R. Donaldson, the six books in order are "Lord Foul's Bane", "The Illearth War", "The Power that Preserves", "Wounded Land", "The One Tree", and "White Gold Wielder".