In China culture, the black crown may symbolize mystery and majesty, because black is regarded as a mysterious color in China traditional culture, and the crown is a symbol of ancient emperors. So, if someone gives you a black crown, it may mean that you are considered mysterious and majestic.
In western culture, the black crown may symbolize mourning and mourning. On some occasions, black crowns are used to express grief and nostalgia for the dead. If someone gives you a black crown, it may mean that they are mourning someone or something, or expressing their grief and nostalgia for you.
In short, the black crown may have different meanings in different cultures and contexts. So the specific meaning needs to be judged according to the specific situation. If you are not sure what it means, you'd better ask the other person or consult relevant information.