With good care, your jewelry can last even longer.
Remove as often as possible while applying perfume, sunscreens, lotions, or before cleaning with harsh chemicals (including bleach).
Clean with warm soap and water, avoiding sterling silver cleansers.
Be aware that chlorine can discolor and even damage your gold vermeil pieces, so be sure to take them off before plunging into the pool or hotub.
Just like all metals, gold vermeil and silver 925 will tarnish over time. To make it shine again you can use a mild soap and scrub lightly with a soft toothbrush and warm water. Rinse with water and air dry on a tissue afterwards.