A FRENCH DIAMOND, RUBY, AND EMERALD-MOUNTED GOLD DESK SET

A FRENCH DIAMOND, RUBY, AND EMERALD-MOUNTED GOLD DESK SET
PARIS, MID-19TH CENTURY, ONE MARK OF EUGENE FONTAINE, ANOTHER POSSIBLY MARK OF MARIE SIMONET
Comprising:
A circular inkwell, the top and push button release with cabochon emeralds set with diamond and ruby floral bouquets, mark of Eugène Fontaine, Paris
A rectangular vesta case with striker, the hinged cover and sides set with cabochon emeralds and rubies within rings of old mine cut diamonds, possibly mark of Marie Simonet, Paris
A pen with retractable nip, with an emerald finial carved with a seal and surrounded by diamonds, the push mechanism for the nib as ruby grape bunches with diamond-mounted leaves, the nib marked MALLAT / BREVETE
A mechanical pencil, with a fluted sphere-form emerald finial surrounded by diamonds, the push mechanism as a coiled ruby-set serpent with diamond head, apparently unmarked
A letter opener, formed as a rounded-tip sword, the hilt set with two large cabochon emeralds amongst rubies and diamonds, apparently unmarked
A pair of scissors, with diamond-mounted feather-form handles, apparently unmarked
A double-ended eraser, rectangular, the central mount set with cabochon emeralds and rubies ringed by diamonds and scrolled filigree, apparently unmarked
8 1/2 in. (21.5 cm.) long, the letter opener