A BLUE ZIRCON AND DIAMOND COCKTAIL RING, CIRCA 1930 set

A BLUE ZIRCON AND DIAMOND RING set with a round cut blue zircon of approximately 3.73 carats accents by trios of old cut diamonds, no assay marks, size O / 7, 2.8g.

A BLUE ZIRCON AND DIAMOND RING set with a round cut blue zircon of 3.73 carats accented by trios of round cut diamonds, no assay marks, size O / 7, 2.8g.

A BLUE ZIRCON AND DIAMOND DRESS RING set with a cushion cut blue zircon of 5.76 carats, accented to the openwork band with single cut diamonds, no assay marks, size M / 6, 6.6g.

A BLUE ZIRCON AND DIAMOND DRESS RING set with a round cut blue zircon of 3.73 carats, between trios of old cut diamonds in the shoulders, no assay marks, size N1/2 / 7, 2.8g.

BLUE ZIRCON AND DIAMOND DRESS RING, set to the centre with an oval cut blue zircon of approx. 5.76 ct. The further openwork head set with diamonds. Size L 1/2. 6.7 grams.

Blue zircon, diamond, and white gold ring Set with an oval-cut blue zircon, framed by round brilliant-cut diamonds 14k white gold Ring size 7; Gross weight 3.4 dwts This work will ship from Lambertvil

Ladies 14kt white gold blue zircon and diamond ring featuring a prong set oval cut bleu zircon weighing approx. 5.88ct.. Surrounded by a frame of prong set round brilliant cut diamonds weighing approx

A SAPPHIRE AND DIAMOND RING, CIRCA 1930 in yellow gold, the navette face set with a step cut sapphire in a cluster of old cut diamonds, no assay marks, size N / 6.5, 3.2g.

A BLUE ZIRCON, RUBY AND DIAMOND RING in 14ct white gold, set with a central mixed cut zircon of 1.89 carats within a stylised halo of round brilliant cut diamonds accented by round cut rubies, stamped

NO RESERVE - A BLUE ZIRCON AND DIAMOND CLUSTER RING in 18ct yellow gold, set with an oval cut blue zircon in a cluster of single cut diamonds, stamped 18CT, size L1/2 / 6, 3.8g. 

18ct white gold (tested) blue zircon ring, with diamond set shoulders

A BLUE ZIRCON AND DIAMOND DRESS RING in 18ct yellow gold, set with a round cut blue zircon within a scalloped border set with round cut diamonds, size N / 6.75, 4.7g.

A 14 kt White Gold & Blue Zircon Cocktail Ring with Diamonds. Dome form ring is clad with numerous diamonds and is centered by a round, blue zircon. Marked "14K". Light wear noted. Size 8. Approximate

AN ART DECO DIAMOND RING CIRCA 1930 in high carat yellow gold and platinum, set with an old cut diamond of 1.09 carats, accented by further single cut diamonds, unmarked, size O / 7.25, 3.7g.

Circa 1930, set with 15 rose cut diamonds, largest diameter 3 mm, ring size 19

Impressive Fourteen-Karat Yellow Gold, Blue Topaz and Diamond Cocktail Ring, composed of a central bezel-set rectangular-cut blue topaz, with an approximate weight of 62.25 carats, flanked on either s

A BLUE ZIRCON AND DIAMOND DRESS RING in high carat yellow gold, set with a pear cut blue zircon of 3.47 carats, unmarked, size N / 6.75, 3.7g.

14k white gold filigree and diamond ring, circa 1930, having three 0.61 ctw modern round brilliant cut bead set diamonds (H-I color, VS2 clarity). Apparently unmarked, tested for fineness. Approx. US

Ring set with a single very fine oval blue zircon weighing approx. 2.75 cts. Ring completed with fine marquise cut and baguette cut diamonds totaling approx. 1.50 cts. Size 6 1/2.

White Gold, Blue Zircon, and Diamond Ringcentering on an oval cut blue zircon (9.20 x 8.30 x 7.23 mm) weighing approximately 5.60 carats prong set within a halo of full cut round diamonds weighing app

AN ART DECO BLUE ZIRCON AND DIAMOND RING, a round-cut zircon in a claw setting to eight-cut diamond-set stepped shoulders, estimated zircon weight 1.89ct approximately, total estimated diamond weight

A DIAMOND DRESS RING, CIRCA 1930 in 18ct yellow gold and platinum, the stylised band set with five graduated single cut diamonds, stamped 18ct Plat, size P / 7.75, 2.5g.

Ladies' 18kt White Gold cocktail ring. Set with large oval cut Blue Topaz stone, weighing approx. 8.5cts. twt. and measuring 15mm x 12mm. Encircled with approx. .30cts. of round brilliant cut Diamonds

Bi-Color 18KT Gold, Yellow Sapphire, and Diamond Cocktail Ring, Buccellaticirca 1970s, the gold mount with finely textured detailing centering on a a prong set oval cut yellow sapphire (14.94 x 10.96