make from

The first and the second sentence is okay but I didn't understand what you mean by the last sentence.

In theory, they all could be ok in some kind of context. But I guess what you are looking for might be "The belt is made of leather".

I agree.

The belt is made of leather is correct.

Hi guys,
how do you explain a laurel crown?
e.g. As you can see, thishttp://images.google.co.jp/images?hl=ja&q=laurel+crown&btnG=%E3%82%A4%E3%83%A1%E3%83%BC%E3%82%B8%E6%A4%9C%E7%B4%A2&gbv=2 is made of gold, not made

I think that the sentence is incorrect.

Neeraj JainI think that the sentence is incorrect.

Hi
Why and how do you amend it?

You do not need to add the word laurel here. You can just say:

This magnificent crown is made of gold.

Thanks.
"Need not" and "incorrect" are totally different meanings. If laurel is unnecessary here, so is the word magnificent.
I'm asking about the usage of made of/from, and my sentence is just an example for understanding of that term. I hope you understand it.
I'd appreciate natives' comments.

To me, your sentence sounds awkward, if not incorrect.

Please do not post unnecessary comments any more, which I think won't work for learners.