GRIMA: BOULDER OPAL AND DIAMOND DRESS RING, 1977

GRIMA: BOULDER OPAL AND DIAMOND DRESS RING, 1977 The oval boulder opal in a pierced mount of textured wire with brilliant-cut diamond accents, mounted in 18 carat gold, signed Grima, workshop mark HJC

GRIMA: YELLOW SAPPHIRE AND DIAMOND DRESS RING, 1977 The cushion-shaped yellow sapphire in a geometric mount with bifurcated shoulders, accented by brilliant-cut diamonds, mounted in 18 carat gold, sig

Platinum 4.5Ct Boulder Opal & Diamond Ring, Size 4 3/4, TW:8.2 Grams.

A yellow metal and boulder opal dress ring; the oblique shaped rectangular plaque within a textured mount and set above a textured fold-formed shank. Italian hallmarked '750' and signed J.L. Ring head

14K white gold ring, brightly polished, featuring centered prong set boulder opal cabochon, weighing approx. 2.65 carats, further adorned with 6 prong set round brilliant cut diamonds weighing a total

A 14 Karat Yellow Gold, Boulder Opal and Diamond Ring, containing one freeform boulder opal measuring approximately 36.00 x 25.80 mm and 126 round brilliant cut diamonds weighing approximately 1.25 ca

AN OPAL AND DIAMOND DRESS RING in 18ct yellow and white gold, set with an oval cabochon opal accented by round brilliant and princess cut diamonds, the diamonds all totalling 1.2-1.4 carats, British h

Opal and Diamond Ring.  This 18 karat yellow gold ring features a 13.93 carat, polished freeform beautiful genuine boulder opal that is bezel-set in a frame of .75 carats round, brilliant-cut, G-

14.40ct Boulder Opal Diamond Freeform Ring, set in 18k Gold with 2/0.064 1 VS2 Diamonds. 17.7g, approximately 1.3125 x 1 x 0.5625 in.

AN ANTIQUE OPAL AND DIAMOND DRESS RING, 19TH CENTURY in 18ct yellow gold, set with a central round cabochon opal between two kite shaped cabochon opals, the central opal within a border of old cut dia

AN OPAL AND DIAMOND DRESS RING in high carat yellow gold and silver, set with an oval cabochon opal within a border of rose cut diamonds, with stylised decoration to the band, unmarked, size N / 7, 3.

OPAL AND DIAMOND DRESS RING, in 18-ct gold. Set with 3 opals, flanked with 4 diamonds. Size N. 4.7 grams.

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

Boulder Opal, Diamond, Gold Ring. Featuring one triangular shaped boulder opal measuring approximately 20 x 14 mm, accented by eight single-cut diamonds weighing a total of approximately 0.15 cttw., s

NO RESERVE - AN ANTIQUE OPAL AND DIAMOND DRESS RING, Made in yellow gold, Three graduated oval cabochon opals, Old European brilliant cut diamonds (one replaced with a round brilliant cut diamond), No

AN ANTIQUE OPAL AND DIAMOND DRESS RING in high carat yellow gold, the face set with five graduated oval cabochon opal accented by single cut diamonds, with textured decoration to the band, unmarked, s

AN OPAL AND DIAMOND DRESS RING in 18ct white gold, set with a pear shaped cabochon opal within a twisted mount, accented by round cut diamonds, stamped 18kt, size Q / 8, 8.6g.

NO RESERVE - AN OPAL AND DIAMOND DRESS RING, Made in yellow gold and platinum, Oval cabochon opal, weighing approximately 1.50 carats, Single cut diamonds, Stamped Plat,Size N / 6.75, Weight 2.0 grams

BOULDER OPAL AND DIAMOND RING Containing one freeform boulder opal measuring approximately 24.00 x 11.40 mm and three round brilliant cut diamonds. Mounted in yellow gold. Ring size 6 3/4. Stamp: 750.

AN OPAL AND DIAMOND DRESS RING in platinum, set with two cabochon opals and two old cut diamonds, the diamond both totalling 0.4-0.5 carats, stamped PT, size M / 6, 3.6g.

OPAL AND DIAMOND DRESS RING, in 18 ct. gold. Set with 3 oval cabochon cut opals, accentuated with 4 diamonds. The side of the head and shoulders with relief scrolling design. Size N. 7.8 grams.

-NO RESERVE- OPAL AND DIAMOND DRESS RING, in 18 ct. gold. Set with 3 oval cabochon cut opals, accentuated with 4 diamonds. Size M 1/2. 4.4 grams.

NO RESERVE, OPAL AND DIAMOND DRESS RING, in 18 ct. gold. Set with 3 oval cabochon cut opals, accentuated with 4 diamonds. Size M 1/2. 4.4 grams.

An 18ct gold fire opal and diamond dress ring. The oval-shape fire opal, with pave-set diamond shoulders. Estimated dimensions of fire opal 18 by 13 by 9mms. Hallmarks for Birmingham, 2011. Ring size