black ore icon for Chinese fairy game on a pure background ，irregular, dark ore with faint gray highlights and soft shadows, Muted gray and black tones, clean and centered

中国童话游戏的黑色矿石图标，背景纯净，不规则，深色矿石，带有微弱的灰色亮点和柔和的阴影，灰色和黑色调静音，干净居中