A ruby, rock crystal, diamond and cultured pearl bracelet

A ruby, rock crystal, diamond and cultured pearl bracelet, 19th century and later, centring on an oval cabochon rock crystal inset with the initials TM set with rose-cut diamonds and rubies, within a border of cushion-shaped rubies and diamonds, mounted in gold, the clasp similarly set, to a later cultured pearl mesh bracelet, length 17.5cm