This trishula pendant is made by the artisan from Jaipur India. They are made of brass (an alloy of copper and zinc) and silver plated.

Brass is a good alternative to gold, it doesnt change color or break down over time.It does not cause allergies, so you can wear it without fear.
It is also very easy to clean by rubbing it with a little toothpaste or soap and lemon juice.