When I mine the redstone or diamond ore, I can't get redstone or diamond.

Please do not mark unreleased versions as affected.
You don't have access to them yet.

What are you using to mine these ores? Wood, stone, and gold picks can't mine redstone or diamond ore. (By can't mine I mean the ore won't drop anything.)

ok. Then, Can i mine it with Iron Pickaxe?

Yes. You need an iron pick axe to mine those ores.