Silver has more industrial demand than gold. World reserves of silver hover around 6-9month supply for industrial use. Gold hovers around 40 years for industrial use supply. There is more demand fluctuation due to demand for jewlery. Silver has more potential to go up as Indians and Chinese are starting to horde silver as a hedge against currency collapse or govt revaluation. Silver is easier to purchase as the price is more attractive when they only make 4-6k a year. Also the new middle class likes to have silver serving sets and utensiles in India as well. Most silver is gotten as a byproduct of gold or copper mining so any reduction in gold and copper mining reduces output of silver.
As for the above... China needs us more than we need them. An embargo of Chinese goods in the US would crush their economy as they have failed to develop a consumer economy to provide for a large local market for goods or services as a buffer. Competion between factories for export sales has driven their margins down close to zero. Cheap loans has resulted in way too much capacity in many sectors. The Chinese savings rate is over 25% where ours is negative. Until Chinese people feel comfortable spending, they depend on the rest of the world for their economic growth. That would probably require the corruption issues to get resolved as well as the adoption of rule of law over administrative law, which corruption has thrived under.