Is silver a good long-term (5- 10 years) investment?

Silver
Silver
Every year, for the last dozen years, my parent have bought for me a certain dollar amount of silver rounds, coins, or bars (more when the price is low and less when the price is high which makes cost averaging less). They will be available to me at age 21 or when I’m in college. However, the current value is not much more than what they cost while the S&P 500 and DJIA have had a substantial increases.

Another Question: Should I ask my parents to buy stock or some other investment? They will if I ask.

Lately, while most commodities have increase in price precious metals including silver has fallen. My parents selected silver because historically silver is very cheap. However, that is because there is very little demand. Seventy years the USA, Canada, and most countries in world had silver coins as money. Now none do. Every middle class family had a set of Sterling silverware. Now almost no one does. And, now silver is not used in photography; once a very big use for silver. Even silver in jewelry may be less. Even solar panels the only other big use, possible big use for silver are manufactured using less silver. And, when they are replaced, the silver will be recovered.
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@BillyBalls That doesn't tell me much. According to the Silver Institute, 70 years ago (1952), silver was $0.85 per ounce. It is now 22 times higher but, according to my grandfather, so are most prices.
Is silver a good long-term (5- 10 years) investment?
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