I really wouldn't recommend it. I'm not sure it will actually remove the oxidized layer, which is what you actually want to do when you clean jewelry. It may also damage the jewelry depend on the metals and gems.
First, rinse it off with water to remove any vinegar that remains. Then, make a paste using baking soda and water. Dampen the surface of the marble above the stain...
Use hydrogen peroxide. Need a recipe? Mix together 1/2 cup of baking soda, 1/4 cup of hydrogen peroxide, and 1 tsp dish soap. Apply cleaning mixture onto the grout, wait...
You can clean these the same way you would clean any other metal. However, you probably want to be careful if they're old or delicate and you don't want to...
Diamond jewelry has a gold or platinum setting. You can use a bowl of warm water, a drop of dish soap, and a child's toothbrush to clean it. Remember to...