LOWER RIGHT SHADOWED WHITE SQUARE U+2751

BlockDingbats
CategoryOther Symbol
UTF-80xE2 0x9D 0x91
UTF-160xFF 0xFE 0x51 0x27
UTF-320xFF 0xFE 0x0 0x0 0x51 0x27 0x0 0x0
HTML❑
Pythonu"\u2751"