A FRENCH DIAMOND, RUBY, AND EMERALD-MOUNTED GOLD DESK SETPARIS, MID-19TH CENTURY, ONE MARK OF EUGENE FONTAINE, ANOTHER POSSIBLY MARK OF MARIE SIMONETComprising:A circular inkwell, the top and push button release with cabochon emeralds set with diamond and ruby floral bouquets, mark of Eugène Fontaine, ParisA 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, ParisA 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 / BREVETEA 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 unmarkedA letter opener, formed as a rounded-tip sword, the hilt set with two large cabochon emeralds amongst rubies and diamonds, apparently unmarkedA pair of scissors, with diamond-mounted feather-form handles, apparently unmarkedA double-ended eraser, rectangular, the central mount set with cabochon emeralds and rubies ringed by diamonds and scrolled filigree, apparently unmarked8 1/2 in. (21.5 cm.) long, the letter opener