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Opal and diamond ring, oval opal claw set and surrounded by claw set diamond cluster upon a 9ct white gold band with scrolled design shank, opal is scratched and grazed, approx. Weight 4.9 grams, size P

An 18ct yellow gold solid opal ring, one oval solid opal, 17x11mm, blue in colour with red green play of colour, mounted in a yellow gold edged frame, size J Wt 7.3 grams

A 14ct white gold opal and gemstone ring, centring a 7.4 x 5mm black opal af, surrounded by mixed cut emeralds and blue sapphires, size N 1/2.

Platinum antique opal ring set in platinum 6 claw setting good colour flashes of red, green and blue 10.13 x 12.41mm

An opal dress ring, 18ct yellow gold, made as a modern solitaire dress ring, set with an oval cabochon piece of solid crystal opal, strong spectral colours of orange and green throughout, measuring 13 x 9.6mm, bezel set in an open backed mount, finished on

Silver and opal ring in Wager style, size: N/6-7, opal as inspected

Vintage 9ct yellow gold and opal ring, weight: approx 3.4 grams, size: O/8

An opal, diamond and emerald ring, in the Art Deco style, comprising central circular cabochon cut lightning ridge black opal of blue and green colours, with small square cut emeralds tapering to each shoulder with two rows of surrounding small single cut

An opal and diamond ring, cluster style, comprising a large central solid Lightning Ridge opal of fine blue/green colour. Surrounded by twenty two small brilliant cut diamonds, with six diamonds set to each shoulder mount. Opal size: 12.3mm x 9.9mm. Total

A vintage opal doublet ring, undulating border, 9ct gold. Ring size Q. Weight 3.2g.

A light opal ring, oval shaped opal measuring 15.2 x 10.7mm set in four claws, 18ct gold. Weight 4.9g.

An amethyst and opal cocktail ring, oval chequerboard cut amethyst set with a crystal opal to either shoulder, all bezel set, 18ct gold. Ring size 8.4g.

A Victorian opal and diamond ring, opal cross set with diamond highlights, pierced raised shoulders, fully hallmarked, 9ct gold. Weight 2.7g.

An opal doublet ring, signet style, ribbed mount, 9ct gold. Ring size S. Weight 8.5g.

A light opal ring, oval opal measuring 13.2 x 8.9mm set in four claws with a 0.02ct round brilliant cut diamond to either side, 18ct white gold. Ring size P. Weight 3.4g.

An antique black opal ring, solid oval-shaped black opal measuring 12.5 x 7mm, excellent play-of-colour, split shoulders with central leaf design, 9ct rose gold. Ring size K. Weight 1.8g.

An 18ct yellow gold solid white opal ring, one oval opal mounted in a yellow gold claw set frame with a tapering band, size N Wt 5.2 grams

An antique opal and diamond ring, the central oval solid white opal of estimated weight 0.70 carat, shouldered by old European cut diamonds of estimated total weight 1.25 carats. Engraved detail to shoulders. 18ct yellow gold. Weight 3.21 grams. Size R

A gem set ring and two tie pins, 9ct gold ring with opal triplet, size S, wt. 4g, pins each set with a fine 7.4mm round cultured pearl.

9ct rose gold opal ring, weight: 2.98 grams, size: T/9-10

A retro opal and diamond set dress ring. 18ct yellow gold, made as a 1960's dress ring of striking rectangular design, featuring a central slender panel of solid crystal opal of strong green spectral colours, framed by smooth gold, detailed to outer by

A 9ct yellow gold boulderopal & diamond ring, one oval boulder opal 6.5 x 3.5 mm with two round diamonds, 0.02ct, size L, weight 2 grams

Silver and solid Australian round white opal ring, size: N/6-7

An opal and diamond ring, the 17mm x 10mm oval opal claw set with a foliate and 20 round brilliant diamond border. 18ct yellow gold. Weight 8.9 grams. Size P.

Silver and solid Australian oval white opal ring, size M-N/6

8ct yellow gold and crystal opal ring, weight approx 2.66, size O-P/7

Vintage 18ct yellow gold opal doublet ring, weight 2.52 grams, sizeH.4

9ct yellow gold opal & diamond ring a handcrafted gents ring featuring an oval cabochon black opal blues and green flashes bezel set. Tapered textured shoulders bezel set with approximately 1ct of diamonds colour G, Clarity SI weight 19.0 grams, size S

A estate 9ct. yellow gold, opal and seed pearl cluster ring, the three oval cabochon opals with good fire surrounded by a row of seed pearls.

A 9ct. yellow gold, opal and sapphire lady's dress ring, the oval cabochon claw set opal framed by a row of sapphires, raised on tapered pillars above the open scroll and saw tooth mount.

18ct white gold, opal and diamond 'Valentin' ring, Bunda, circa 2014, of cluster design centring a black opal stated to weigh 2.85 carats claw-set within a border of round brilliant-cut diamonds together stated to weigh 0.42 carat, size M, signed B

18ct gold, opal and diamond ring, of cluster design centring an oval opal weighing approximately 10.50 carats, framed by a border of brilliant-cut diamonds together weighing approximately 2.20 carats, size N, retailed by C.A Bochert.

A solid opal and diamond ring. 18ct rose gold, made as a modern cluster, set with central round cabochon solid crystal opal displaying orange and green spectral colours throughout, weighing approximately 4.80ct, claw set within a fine frame of small diamon

A three stone Mexican fire opal dress ring. 18ct yellow gold, made as a simple dress ring, set across with three oval cabochon cut Mexican fire opals, graduated in size, each claw set, orange in colour with lovely transparency, finished on a plain band. N.

An opal set dress ring. 10ct yellow gold, made as a simple solitaire dress ring, set with an oval cabochon white opal with strong spectral colours throughout, claw set in four tiny double claws, finished on a basket setting, finished on an upswept band

An opal Triplet ring, set in 9ct white gold. Ring size L. Weight 4.8g.