A Belle Époque diamond pendant necklace,, circa 1910

A Belle Époque diamond pendant necklace, circa 1910
The circular openwork pendant with knifewire detail, suspending a trio of articulated diamond drops, millegrain-set throughout with old brilliant, single and rose-cut diamonds, mounted in platinum, to a later cable-link chain, converted from a brooch, old brilliant and single-cut diamonds approx. 2.20cts total, lengths: pendant 6.4cm, chain 39.0cm, fitted case by Brook & Son, 87 George Street, Edinburgh