problem with the light reflects of the texture

Hello ! I’m trying to make an ore model in the Blende 3D program and export it to Unreal, but I have a problem with the light reflects of the texture, in the first picture it should look like this first image , only parts should reflect light, but in the Unreal engine, the model with the texture reflects light of the whole mesh


, how to do it correctly?

You need a roughness map to control how shiny various parts of your model are.

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