EARLY 20TH CENTURY PLATINUM AND OLD MINE CUT DIAMOND ARROW PIN. - L: 3".

EARLY 20TH CENTURY PLATINUM AND OLD MINE CUT DIAMOND ARROW PIN. Point and feather tail set with total of 28 old mine cut diamonds together weighing approximately 2.75 ct. - L: 3".

11.4 grams total weight. With old European and mine cut diamonds, 15 total. 3.25 ct. total, largest diamond .38cts. VS - SI clarity and I-J-K color. Small chip on central diamonds. Top of pin platinum

An early 20th century platinum and gold, turquoise and old-cut diamond cluster brooch.Turquoise estimated dimensions of 17.6 by 16 by 8.5mms.Estimated total diamond weight 3.90cts, G-I colour, SI1-P1

An early to mid 20th century platinum and 18ct gold old-cut diamond floral dress ring.Estimated total diamond weight 1.20cts, H-I colour, SI1-P1 clarity.Ring size O1/2. 3.3gms.

ANTIQUE GOLD, DIAMOND AND ENAMEL PIN FORMED AS TWO PANSIESEarly 20th CenturyOld mine-cut diamonds, diameters approx. 3.0mm and 2.8mm, the smaller champagne-colored. Unmarked. Length 1.25”.Approx

A FINE ANTIQUE DIAMOND DRESS RING, EARLY 20TH CENTURY in yellow gold and platinum, the scrolling face set with old cut diamonds accented by rose cut diamonds, no assay marks, size J / 4.5, 3.6g.

Late 19th - early 20th century. Yellow gold bar pin and pendant, both tested 10K. Bar pin with center crescent shape around old mine cut diamond, approx. .18ct (chip on girdle), 1.87"l (newer pin back

An early 20th century diamond jabot pin, circa 1910, designed as an arrow set with old cut diamonds, 7.1cm long

con zaffiro centrale taglio carrè e diamanti taglio vecchio, cts. 1.60 circa. Misura 17. Gr. 3.5 An english platinum ring, made in early 20th Century, with sapphire and old cut diamonds, cts. 1.60, S

An early 20th century platinum old-cut diamond two-stone crossover ring, with asymmetric shoulders, estimated total diamond weight 0.55ct, H-J colour, SI2-P1 clarity, band stamped PLAT, ring size N, 2

incisa e sbalzata, con tre diamanti centrali taglio vecchio e diamanti taglio rosa, cts. 4.00 totali circa. Cm. 9. Gr. 8 An early 20th Century platinum brooch with old cut diamonds and rose cut diamon

Silver, gold and diamond bangle, early 20th century Old European-cut diamonds weighing approximately 3 ct Weight gr 19,4 Inner circumference cm 5,4

An early 20th century platinum and gold, old and rose-cut diamond ring.Estimated total diamond weight 0.75ct. Ring size P. 5.3gms.

AN EARLY 20TH CENTURY DIAMOND SETTER DOG BROOCH realistically modelled with textured fur, with a black enamel collar set with an old-cut diamond. Pin marked '18', 2.2cm by 4.8cm, 8.5 grams The brooch

A mid 20th century platinum old-cut diamond brooch, with baguette-cut diamond accents. Estimated total diamond weight 4cts.French re-strike marks. Length 3.2cms. 11.7gms.

An early 20th century European platinum engagement ring set with old mine brilliant cut diamonds with a 0.9ct center. Hallmarked and cast in 90% platinum. Fine Fashionable Natural Precious Stones Jewe

A DIAMOND AND ENAMEL BROOCH, EARLY 20TH CENTURY in platinum and yellow gold, the oval body of openwork design, set with a central old cut diamond between panels of blue guilloche enamel, accented by f

A SOLITAIRE DIAMOND DRESS RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, set with an old cut diamond of 0.51 carats within a tapering band, stamped 18ct Plat, size K / 5.25, 2.4g.

SOLITAIRE DIAMOND RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, set with an old cut diamond, between geometric shoulders, stamped 18ct Plat, size K / 5.25, 2.2g.

A ladies early 20th century platinum diamond manual wind cocktail watch. The white dial with black Arabic numerals and minute track, with old and single-cut diamond bezel and expandable bracelet. Esti

NO RESERVE - A DIAMOND TOI ET MOI RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, set with two old European cut diamonds, stamped 18ct Plat, size K / 5.25, 2.7g.

A set of early 20th century 18ct gold and platinum mother-of-pearl and diamond dress studs. Each designed as an old-cut diamond collet, within a mother-of-pearl surround with engraved border. Estimate

Early 20th century 14kt yellow gold lion's head pendant displaying an open mouth with fangs surrounding a central prong-set Old European cut diamond measuring approx. 3.0mm. Further accented by (2) ro

A PAIR OF ANTIQUE DIAMOND DROP EARRINGS, EARLY 20TH CENTURY in yellow gold and platinum, each set with a row of three old cut diamonds suspending a cluster of old cut diamonds, stamped 18ct, 2.6cm, 4.