What metals are available as bullion/coins?

Question

Everyone is familiar with gold and silver coins and bullion. What other metals are available as bullion or coins, or other tradable form?

Answer 1

There seems to be four bullion metal coins that are commonly traded: Gold, silver, platinum, and palladium (Here are companies that trade the coins - includes prices: apmex, kitco, coloradogold).

One way to measure liquidity would be to examine the difference in the "Bid" and "Ask" prices of the different metals.

Gold has a difference of $1 on a price of $1348.40 (0.07 %)
Silver has a difference of $0.05 on a price of $23.25 (0.22 %)
Platinum has a difference of $10 on a price of $1705.50 (0.59 %)
Palladium has a difference of $5 on a price of $589.20 (0.85 %)

Gold has a very small spread for its price. To have such a small spread it must be traded a lot to determine the market price for both buyers and sellers. It seems to make sense that gold and silver have the lowest spread (and thus more liquid) since they are more well known.

There is a copper bullion coin. It's called the nickel. :)

Answer 2

Platinum is one of the metals available as bulion coin;

http://en.wikipedia.org/wiki/American_Platinum_Eagle

If you are also considering ETF trading then, Platinum and Palladium are also available.

http://en.wikipedia.org/wiki/Platinum_as_an_investment

Answer 3

As bullion coin it is apparently gold, silver, platinum and palladium:

http://en.wikipedia.org/wiki/Bullion_coin

I don't know which are readily traded, but I'd assume it is the first three in that list.

Wikipedia also has a list of previous metals, on the bottom of this page. That doesn't exactly answer the question of which have a relatively liquid market.

Answer 4

Silver, Gold, and Platinum are the most common.

I've also found places offering

• Palladium
• Copper

Not sure about the liquidity for the latter two.