1 teaspoon mild dishwashing liquid
1 quart warm water
1 teaspoon ammonia
In a small bowl, mix dishwashing liquid and ammonia in water to make a sudsy solution. Immerse the gold to be cleaned in the solution for a few minutes, then brush gently with a soft toothbrush to get into crevices and cracks and other hard-to-reach places. Rinse in lukewarm water and allow to dry. After drying, rub gold lightly with a chamois cloth to restore a lustrous shine.