A silver dime contains approximately 0.08 ounces of silver and has a melt value between $1.15 and $1.22, as of September 2015. As long as silver prices stay above $1.27 per ounce, a silver dime has a higher melt value than its face value.
In general, silver dimes minted within the last century do not have a numismatic value greater than their melt value. Roosevelt or Mercury silver dimes in good condition or from rare dates can net a premium in excess of their melt value. A 1942/41 Mercury dime in good condition can sell for $253. Due to their age and rarity, dimes from the 18th and 19th century tend to have higher numismatic values. For example, an uncirculated 1837 Seated Liberty dime can sell for $371.