A brilliant-cut diamond and blue enamel bubble motif bombé dress ring, by Kutchinsky.Estimated

AN ENAMEL AND DIAMOND DRESS RING The rectangular plaque, composed of blue enamel and accented by single and brilliant-cut diamonds, between split trifurcated shoulders, stamped 18CT, ring size N.Â

SCHLUMBERGER, TIFFANY & CO., ENAMEL AND DIAMOND 'PAVÉ X' RING Consisting of a yellow gold ring with blue enamel, surmounted with a platinum 'X' motif containing 28 round brilliant cut diam

An Art Deco diamond, turquoise and black enamel dress ring, central round old brilliant cut diamond approx 0.21ct, upon a black enamelled principle ground, above four stone turquoise inset shoulders,

An 18k white gold floral-shaped ring, in the manner of Van Cleef & Arpels, the centre of the ring set with a cluster of seven round brilliant cut diamonds, the petals set with square-shapedblue topaz

Lady's 18k white gold Roberto Coin blue enamel and diamond ring consisting of 25 pave-set round brilliant cut diamonds with a total weight of 0.25cts, graded F color, SI1 clarity. Finger size 6 3/4. G

A diamond set bombé style dress ring, central tapered band of pavé set round brilliant cut diamonds, estimated approximate total diamond weight 0.50ct, yellow metal border tapering to a white me

Collection of Two Diamond, Sapphire, Enamel, 14k Gold Rings. Including one round brilliant-cut diamond weighing approximately 0.25 ct., blue enamel, 14k white gold ring, size 4 1/2 together with one r

14K yellow gold containing nine round brilliant cut diamonds accented with blue enamel, approximately 1.00 ct total diamond weight, ring size 6-1/2, 3.4 dwt. Condition (Good).

ANTIQUE COCKTAIL RING 14K GOLD DIAMONDS & BLUE ENAMEL: 14K yellow gold cocktail ring in a dimensional swirling design of brilliant cut, round diamonds accented by blue enamel. The center stone is appr

A three stone diamond and enamel half hoop gypsy set ring, the slightly graduated round brilliant cut diamonds to tapering blue guilloche enamel band, stamped '18ct' , size P, 10.7 grams

STEPHEN WEBSTER, A BLUE CRYSTAL HAZE AND DIAMOND DRESS RING LONDON 1997The facetted blue Crystal Haze panel within a surround of brilliant cut diamonds, approximately 0.52 carats total, in an 18 carat

BUCCELLATLI, A VINTAGE DIAMOND BOMBE DRESS RING in 18ct yellow gold and white gold, the tapering band of openwork design, set with round brilliant cut diamonds within star shaped pierced motifs, signe

DIAMOND AND ENAMEL RING Containing 21 round brilliant cut diamonds weighing approximately 0.85 carat total, with blue enamel decoration. Mounted in yellow gold. Ring size 7. Stamp: M K18 ITALY. Gross

A SAPPHIRE AND DIAMOND DRESS RING set with a cushion cut blue sapphire of approximately 5.02 carats, accented by rows of round brilliant cut diamonds, with further round brilliant cut diamonds to the

Ladies' antique 14k yellow gold (untested) diamond cluster ring with blue and white enamel consisting of one round brilliant cut diamond measuring approximately 5.65mm with an estimated weight 0.65cts

A 14ct white gold Tanzanite and diamond dress ring. Features on oval cut vivid Violet Blue Tanzanite at 2.26ct total carat weight and fifty round brilliant cut diamonds at 0.53ct carat diamond weight

Fabulous Modern 18ct white gold textured shank sapphire and diamond dress ring, set with 2 oval cut dark blue sapphires total weight of sapphires 2.22ct, and 20 round brilliant cut diamonds, total wei

A FANCY COLOUR DIAMOND DRESS RING in 18ct white gold, set with a cushion cut blue diamond of 1.01 carats in a border of round brilliant cut pink diamonds, and a cushion cut yellow diamond of 1.26 cara

A turquoise, diamond and eighteen karat white gold ringdesigned as a carved turquoise bombé, with applied round brilliant-cut diamond star motifs. 7.9 dwt; size: 7 1/4

Two enamel and diamond rings, by Sheila Fleet the first of scalloped design, with blue/green enamel detail; the second also of scalloped design, collet-set with two round brilliant-cut diamonds and gr

AN ANTIQUE GEORGIAN ENAMEL AND DIAMOND RING in yellow gold, the oval face is decorated with blue enamel with foliate motif set with rose cut diamonds, unmarked, size P / 7.5, 9.7g.

Ruby, Glass, Diamond, Enamel, 14k Yellow Gold Ring. Centering an octagonal shaped plaque featuring ruby, glass and blue enamel accents in a flower motif, surrounded by six rose-cut diamonds, further e

Two Vintage Gem-Set Ringsone in a dome motif set to the center with an old cut diamond melee and cluster of round cut rubies, with blue enamel ground and scrolled gilt highlights within a surround set

A La Nouvelle Bague 18K yellow and white gold triple row domed ring. One row is yellow gold with a dark blue enamel dot. The middle row is white gold and bead set with 35 round brilliant cut diamonds,