A Queen Victoria, Royal presentation gem brooch,

細節
A Queen Victoria, Royal presentation gem brooch,
in the form a claw-set single hexagonal-cut smokey quartz, with half-pearl sylised fleur-de-lys shoulders with twin supporting bars (one deficient) the reverse with engraved inscription "FROM HER MAJESTY THE QUEEN, BALMORAL. JUNE 1st. 1886."
See illustration