Antique Russian Imperial Era Diamond Cluster Earrings

made in St Petersburg between 1908 and 1917

22 sparkling white round old cut diamonds with an approximate total weight of 2.85 ct (color F-G) set in silver over 14K rose gold

diameter 12,5 mm (1/2 in.)

Marked with 56 zolotniks gold standard (14K – 583) / St Petersburg assay office 1908-1917, and maker’s initials Cyrillic ‘ЗБ’.

There were two jewelers with these initials, known to work in St Petersburg in the corresponding period – Zalman Bogorad (recorded in 1916) and Zalman Back, owner of a gold and silverware shop, mentioned in 1906 (see A.Ivanov Gold And Silversmiths In Russia 1600-1926, Nr. 283 and Nr 476).