RENE BOIVIN, AN IMPORTANT DIAMOND RING in 18ct yellow and white gold, set with an old European cut

A DIAMOND CLUSTER RING in 18ct white gold, set with an old European cut diamond of 1.00 carats, in a border of single cut diamonds, stamped 750, size Q / 8, 3.2g.

A DIAMOND GYPSY RING in 18ct yellow gold, set with three old European cut diamonds in star motifs, partial British hallmarks for Birmingham, size L / 5.75, 6.7g. 

NO RESERVE - A DIAMOND RING in 18ct yellow and white gold, set with three old cut diamonds in trefoil formation, all totalling 0.6-0.8 carats, stamped 18K 750, size N1/2 / 7, 3.8g.

A FINE DIAMOND CLUSTER RING in 18ct yellow gold and platinum, set with a principal old European cut diamond of 0.72 carats within a border of single cut diamonds, stamped 18ct Plat, size N1/2 / 7, 2.7

AN ART DECO SAPPHIRE AND DIAMOND RING in 18ct yellow and white gold, set with a square step cut sapphire within a border of old cut diamonds, stamped 18ct, 2060, size P / 7.75, 2.4g.

NO RESERVE - AN ART DECO DIAMOND AND RUBY DRESS RING in 18ct yellow gold, the hexagonal face set with old European brilliant cut diamonds, within a border of step cut rubies, stamped 18, size Q / 8, 2

AN ANTIQUE OPAL AND DIAMOND DRESS RING in 18ct yellow gold, set with a trio of graduated oval cabochon opals, accented by pairs of old European brilliant cut diamonds, full British hallmarks (partly o

A FINE RUBY AND DIAMOND CLUSTER RING in 18ct yellow gold and white gold, set with an oval cut ruby of 7.05 carats in a cluster of old cut diamonds, the diamonds all totalling 1.3-1.4 carats, stamped 1

Lady’s 14 karat yellow and white gold ring set with an old-European cut diamond. Approx. ring size 5¾.

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 VINTAGE DIAMOND CLUSTER RING in 18ct yellow gold and platinum, set with a floral cluster of old European and round brilliant cut diamonds, stamped 18ct & PLAT, size K1/2 / 5.5, 1.9g. 

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

AN ANTIQUE CEYLON NO HEAT SAPPHIRE AND DIAMOND RING in 18ct yellow gold, the navette shaped face set with a cushion cut blue sapphire of 1.18 carats, within a surround of old European brilliant cut di

A ladies antique two tone 18k gold and gemstone ring. Features a large 12mm x 11mm x 8mm cushion cut aquamarine flanked by a pair of bezel set old European cut diamonds measuring 4mm wide each. Marked

14KT YELLOW & WHITE GOLD AND 3.65 CT DIAMOND MAN'S CAST MASONIC RING:One prong set Old European cut diamond, measuring 10.00-9.98 x 6.00mm approximate weight of 3.65ct. Diamond has a large culet. Clar

Two 14K Gold & Diamond Rings• yellow gold ring set with jade cabochons and Old European cut diamonds weighing a total of 0.77 carats, 7 (ring size)• yellow & white gold ring set with round

Vintage retro estate 14K and 18K yellow and white gold old European cut diamond engagement ring: Showcasing a center 3.65mm diamond, est. .18ct, K, I2, and flanked with six small single cut diamonds,

Crafted out of 14K white and yellow gold, set with old mine- and old European-cut diamonds, weighing a total of approximately 0.96 carats, accented with four emeralds, weighing a total of approximatel

Antique 18kt yellow gold ring displaying a panel of (21) Old European cut diamonds set in 18kt white gold. Apparently unmarked. Total approx. weight of the ring is 2.1 dwt (gross). Ring size - 10. Fro

5 Old European Cut Diamonds Ranging in size from 3.5mm-3.0mm, surrounded by 21 1.0mm Old European Cut Diamonds. 1 Diamond is missing. H/I Color. VS1 to Is Clarity. Approx 1 Carat total weight, set in

the first, yellow gold (unmarked), pillow-set old European cut diamond, 1/2 ct, surrounded by (10) small diamonds; along with an 18K white gold filigree ring with single old old European cut diamond,

1) 14K yellow gold ring with approx. 0.40ct Old European cut diamond set in the center with additional diamond accents, sz 6 and 2) 14K white gold filigree ring with diamond set in the center, sz 4.5,

1) Art Deco, 18K white gold navette ring featuring five Old European-cut and prong set diamonds, weighing approx. 0.40 ctw., vertically arranged with engraving, sz 4.25, and 2) 14K yellow gold navette

Includes a 14kt yellow gold ring displaying (5) bezel set faceted diamonds - stamped, 14", ring size - 6 1/4; and (1) Art Deco 18kt white gold ring displaying (3) stacked Old European cut diamond