Global markets have not been affected by the possibility of rising U.S. interest rates. Japan and the Nasdaq in the U.S. are gaining, so that's creating a positive flow.

The biggest impact in today's trade is coming from the reduced worries about U.S. interest rates seen in U.S. markets yesterday.

The possibility of rising interest rates worries investors. For many companies there is a direct effect on their earnings and stocks can also become less attractive to bonds.

The statement opened up the possibility that the interest rate going to 4 percent isn't 100 percent guaranteed.

Should the global economy suffer a period of slower demand, which is a distinct possibility given rising interest rates, a slowing housing market and high debt, then the demand profile on the metals could suffer. In turn, these lofty metal prices would then look out of place.

The possibility of their becoming members will depend on the interest shown by the two parties.