RealMoney Radio: High Commodities

Oil stocks, copper stocks and all other commodity stocks are trying to find a bottom, Jim Cramer told his "RealMoney" radio show listeners Friday, noting that tech and healthcare were moving lower, too.

You just have to be in the four big bull markets, he said, even on a down day. He said that these markets are minerals, infrastructure, carbons (which includes oil), and aerospace.

So even though the commodities like minerals are down, they've been zooming higher because of true, fundamental demand from fast-growing countries around the world, he said.

Cramer said that this demand will keep prices high, so the group is attractive as it tries to find a bottom.

For example, he said that gold prices will bounce back for a number of reasons. There's lots of geopolitical tension to go around between Iran, Nigeria and Iraq. People in China, India and Iran are hoarding the metal because they're worried about their currencies. And there's not a lot of gold left in the ground.

As far as copper is concerned, he said that hedge funds may have taken too much inventory down, and there are supply problems and lots of demand from China.

People stopped mining for zinc when the prices were too low, so now there's some scarcity. And China is driving demand for aluminum through the roof.

When commodities go up in price, central banks around the world raise rates, Cramer said, because they want to make it too expensive to hoard these metals. But even with rate hikes, he believes that these commodities will stay hot.

Tech is looking for a bottom, too; and Cramer, adding Microsoft(MSFT) and Cisco(CSCO) have led the declines.