This magnificent Indian Naga ring is made by the artisan of Jaipur in India.

It is made of brass (an alloy of copper and zinc). Brass is a good alternative to gold, it  does not change color or decompose over time. It does not cause allergies, so you can wear it without fear.

They are very easy to clean by rubbing with a little toothpaste or soap and lemon juice.
 
The size of the ring is adjustable.