Jewellery, Watches and Objects of Vertu to include the personal archive of Louis Osman, goldsmith and architect

A 19th century diamond set cross pendant, the Latin cross with scrolling foliate terminals and small fleur-de-lys motifs between the arms, set throughout with graduated old brilliant-cut diamonds and accented with a blue enamel border, mounted in gold and silver, suspended from a matching rose-cut diamond set foliate bale, total diamond weight approximately 6.4 carats, pendant length, including bale 70mm. £2500-3500