Gold

Gold has been associated with both utmost evil and utmost sanctity throughout human history.

In popular culture the gold pocket watch is the ultimate symbol of capitalist wealth, while credit card companies use the term 'gold' to imply that their cards increase wealth.

Yes this would denote power due to the fact that in the times of antiquity the common man had no concept of time let alone a time peice to record it so in contrast to those whom possesed pocket whatches were some what of an elete status or having some power over the universe having conqered time.