A late 19th century gem-set brooch, French, the openwork quatrefoil set with a central natur...

A late 19th century gem-set brooch, French, the openwork quatrefoil set with a central natural pearl, measuring approximately 8.7 x 8.6 x 9.0mm, the surround set with alternating square-shaped emeralds and old brilliant-cut diamonds, with oval-cut rubies to the cardinal points and diamond-set scrolls between, mounted in silver and gold, French assay marks, partial maker’s mark, fitted leather case with embossed initials ‘D.I.’, diameter 35mm. £3,000-£5,000 --- Provenance: This brooch originally belonged to Baroness Dolorès Issaverdens, née Torres Caicedo. Born in Argentina in 1881, the Baroness married Baron Eugène Issaverdens (1874-1928) in Paris in 1900. She lived in France until the end of her life and died in Port-Marly in 1967. Thence by family descent. Condition Report Pearl off round with some wrinkling and blemishes/spots and light scratches. Off-white hue with silver overtones, soft lustre. Pearl drilled and attached to T-bar style fitting. Pearl moves/rotates as allowed by style of setting. Diamonds bright and lively. Emeralds well matched and with very good transparency. One with chip evident under close inspection. Rubies reddish-pink with bluish sub-hue, well matched and with good transparency, some typical inclusions evident under close inspection. One with surface reaching flaw with small loss here. Reverse with a couple of spot solder repairs. Clasp secure. Light wear to metal, overall good condition. Rubies approximately: 5.9 x 4.4 x 2.6mm 6.4 x 4.5 x 2.4mm 6.1 x 3.5 x 2.8mm 6.3 x 4.2 x 2.9mm Case in very good condition - light wear.