A silver & gold sapphire & diamond brooch, circa 1905. The oval-shape sapphire, within a rose-cut diamond surround, to the similarly-cut diamond bow surmount. Work master's marks for August Frederik Hollming. Approximate dimensions of sapphire 18.7 by 15.5 by 10.9mms. Length 2.2cms. August Frederik Hollming was born in Finland in 1854 but moved to St Petersberg in 1876 after an apprenticeship with Fridhoff Ekholm in Helsinki.