Nickel-plated iron cup for diamond synthesis

The utility model provides a nickel-plated iron cup for diamond synthesis, which is provided with a cup body made of iron materials. The cup body is composed of a round cup bottom and a cup wall, the periphery of the cup wall is connected with the round cup bottom, the cup body is open, and a nickel plating layer is coated on the outer surface of the cup body. During use, the nickel-plated iron cup is mounted in a heating device for diamond synthesis, so that no impurity can be absorbed by diamond in synthesis, and product quality is improved.