Gold is more valuable than silver. durr.
There's nothing special about it. Gold is more or less nonreactive, but that's not a special property. What makes it valuable is its rarity, not its nonreactivity. Mercury is similarly nonreactive, but not nearly as valuable.
It is more valuable than gold because there is a few amount of gold and more dirt. So it is easy to find dirt than it is to find gold. That is why gold is more valuable than dirt.
Rhodium and platinum are both more valuable than gold.
Twenty-four karat indicates pure gold; 18 karat gold is mixed with another metal and is thus, less valuable.
Gold
There are several metals more valuable than gold. Platinum is one.
Gold
yellow gold
Generally, coins are valuable because of the price of the metals they are made from, but if you mean in a collectible way: One thing that makes a penny valuable is the date. They older the coin usually the more valuable. Another thing is the mintmark. For example 1943 pennies with a "S" mintmark are more valuable than pennies with no mintmark. Another thing is the condition of the coin. The less ware it has the more it's worth.
Its a shiny gray... Like how gold is a shiny bronze, it just makes it look cooler/more valuable
pure gold (24k) vs 41.7% (10k) gold.. you decide.
platinum