Flower Diamond Ring, Early 20th Century

American, early 20th century. Art Nouveau filigree platinum (tested) ring with .30 ct brilliant cut center diamond surrounded by smaller diamonds in flower motif. Size 5.

ANTIQUE BLACK OPAL AND DIAMOND RING, EARLY 20TH CENTURY mounted in yellow gold, claw-set with an oval black opal measuring 14.8 x 10.5mm,and weighing approximately 3.36 caarts, within a border of circ

A diamond ring, early 20th century, set with a drop-cut diamond weighing approximately 2.40 carats, with vari-cut diamond foliate sides and surround, size 11/51, weight 7 grams.

AN ANTIQUE PEARL AND DIAMOND RING, EARLY 20TH CENTURY in yellow gold, the openwork face set with an old cut diamond and two pearls in a border of rose cut diamonds, further rose cut diamonds set to th

ANTIQUE TURQUOISE AND DIAMOND RING, EARLY 20TH CENTURY claw-set with a cabochon turquoise, within a border of cushion-shaped diamonds, size Q / 8, unmarked, estimated total diamond weight 0.60-0.80 ca

EDWARDIAN PLATINUM AND DIAMOND RINGEarly 20th CenturyFull-cut diamonds, approx. 5.0mm x 3.6mm and approx. 4.6mm x 3.0mm, flanked by four small diamonds. Maker’s mark “SRS”. Size 3&#1

AN ANTIQUE OPAL AND DIAMOND RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, set with three cabochon opals, accented by round cut diamonds, stamped 18CT & PT, size L / 5.75, 2.7g.

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.

AN ANTIQUE SOLITAIRE DIAMOND RING, EARLY 20TH CENTURY in 18ct yellow gold, set with an old cut diamond of 0.32 carats, stamped 18c, size N / 6.75, 2.0g.

ANTIQUE NATURAL PEARL AND DIAMOND RING, EARLY 20TH CENTURY set with a bouton-shaped natural pearl measuring 7.7-8.0 x 6mm, to a band set to the front with circular-cut diamonds, size V1/2 / 10.75, sta

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.

AN EMERALD AND DIAMOND CLUSTER RING, EARLY 20TH CENTURY in yellow and silver, set with a step cut emerald of 1.14 carats, in a border of single cut diamonds, stamped 18CT, size M / 6, 3.6g.

A SAPPHIRE AND DIAMOND DRESS RING, EARLY 20TH CENTURY in 18ct yellow gold, set with a trio of graduated cushion cut blue sapphires, accented by pairs of old cut diamonds, stamped 18ct, size O / 7.25,

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.

NO RESERVE - A SAPPHIRE AND DIAMOND CLUSTER RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, set with an oval cut blue sapphire within a border of single cut diamonds, maker's mark SH&Co, st

Art Deco Diamond Filigree Ring, Early 20th century, Art Deco ring in platinum over 18k set with .17cttw diamonds (approximately H color and SI1 clarity). Hallmarked with Austrian assay mark for 14k. W

A diamond engagement ring. Early 20th century. Set in platinum. Approx. 3/4 carat t.w.Size 6.5

AN ANTIQUE SAPPHIRE AND DIAMOND CLUSTER RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, set with an oval cut sapphire within a halo of round cut diamonds, stamped 18ct Plat, size N / 6.5, 2

AN ART DECO RUBY AND DIAMOND DRESS RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, the rectangular face set with a step cut ruby accented by single cut diamonds, stamped 18ct Plat, size M /

Deakin & Francis 18Kt Yellow Gold & Diamond Ring. With early 20th century Birmingham hallmarks. Size - 8. Weight - 3.7 dwt.

DIAMOND HORSESHOE RINGEarly 20th century, 10k yellow gold ring with a raised horseshoe set with seven old mine cut diamonds weighing approximately .28ctw. size 9.5, weighing 8 grams

NO RESERVE - AN ANTIQUE GARNET INTAGLIO AND DIAMOND SEAL / SIGNET RING, EARLY 20TH CENTURY in platinum, set with a cushion cut garnet, the table reverse carved in detail to depict a coat of arms, acce

NO RESERVE - A DIAMOND THREE STONE RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, set with a trio of graduated old cut diamonds within a stylised band, stamped 18ct, size M / 6.25, 2.9g.

A Burmese sapphire and diamond cluster ring. The early 20th century ovoid-shape Burmese sapphire, weighing approximately 4.50cts, and old-cut diamond cluster, to the later lower mount and replacement