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Gold diamond and black opal pendant, 18ct yellow gold, designed as graduating stylised leaves set with single cut diamonds and terminating with a fine bezel set solid balck Australian opal, blue /green hues, stamped '750', total weight 5 grams

Two gold opal and amethyst rings, 18ct yellow gold, one claw set with a fine solid natural white opal with two small brilliant cut diamonds to the shoulders, second ring is claw set with a round amethyst and one side channel set with fine tapering baguette

Antique Australian boulder opal set 9ct rose gold ring, marked 9ct. Approx weight 4 grams, dia. 13 mm, ring size O, ring, marked 9ct. Approx weight 4 grams, dia. 13 mm, ring size O

Opal doublet set rose gold ring rubbed marks. Approx size O-P, crazing - chips seen at edges, weight 2.33 grams, tests as 10ct, rubbed marks. Approx size O-P, crazing - chips seen at edges, weight 2.33 grams, tests as 10ct

Victorian opal & diamond set yellow gold ring unmarked. Approx weight 2.54 grams, ring size M, 3x opals are a/f, tests as 15-18ct, unmarked. Approx weight 2.54 grams, ring size M, 3x opals are a/f, tests as 15-18ct

Australian 15ct gold and opal bar brooch, stamped 15ct verso, set with central almond shaped solid white opal in a rope twist surround, on a 15ct yellow gold bar frame accented with foliate filigree designs and stepped terminals, total weight 6.82gm, width

New Zealand C1970 Peter Minturn 9ct single opal sea anemone ring, oval opal set in triple tier of anemone stems on wide shoulders, ring size P

Edwardian 9ct opal and ruby spinel pendant, round and large lozenge cabochon translucent milk opals interspaced with triangular panel of two spinels on 9ct trace link neck chain (plated clasps)

18ct single fire opal dress ring, circular cabochon gem on split triple plain shoulders, ring size P

Late Victorian 9ct jelly opal necklace, 27 oval cabochon opals rub-over set chain linked with seven single opal drop pendants 38 cm long

9ct single black opal doublet spray brooch, double loop plain frame with plain and textured finish

Opal and diamond three stone ring, centred by an oval opal cabochon measuring approximately 9.53 x 7.63 x 4.34 mm, between two old mine-cut diamonds, estimated total diamond weight 0.80 carats, mounted in 18ct gold, weight 4.7gm, ring size M.

18ct yellow gold opal diamond ring, set with one pear shaped precious opal surrounded by twenty bead set round brilliant cut diamonds G-H colour VS2-P1 clarity

9ct gold opal tourmaline ring, set with one triangular shape precious opal surrounded by eighteen pear shape pink tourmalines

M. Gillett (?), 'HMS opal, New Hebrides 1886', watercolour, signed, titled and dated lower right and centre 'M. Gillett hallmarked sterling opal New Hebrides 1886', 22 x 38 cm, 65 x 88 cm overall

A vintage boulder opal matrix specimen pendant, set in silver mount, late 20th century, 5.6 cm high overall

A fine set of boulder opal buttons and studs, mounted in 9ct yellow gold, housed in original plush box, circa 1900, the box 12.5 cm wide

14ct white gold, opal and diamond halo ring, a 4.39ct free form cabochon boulder opal (black with green, yellow, blue colour play), claw set and surrounded by round brilliant cut diamonds (Colour J-K, Clarity SI2-I2) with further diamonds set to the should

A good 18ct gold large opal and diamond ring, the oval cabochon 5.23ct. opal with white base and good blue/green/orange flash in radiating 14-pillar wire basket setting, framed by three modern brilliant cut diamonds to each side, graded F-G and Vs-Si. TDW.

Scandia opal and silver brooch marked Scandia sterling, item size 52 x 31 mm

Large opal triplet and 14ct yellow gold pendant marked 14k, weight 2 grams opal size 17 x 12 mm,

Boulder opal, diamond and 14ct white gold pendant marked 585, size 22 x 10 mm overall, weight 1.2 grams

Australian Modernism opal triplet and 9ct rose gold ring, marked 9ct, weight 7.35 grams, ring size K, wear to triplet edge

Four 18ct yellow gold rings, consisting of two opal one ruby and a diamond ring various sizes and with a total weight of 12.4 grams. (4)

Two opal and Damond ring, in a cluster style and set with 5 mm round cabochon cut opal and 10 old European cut diamond average 0.05ct each. Size: N. Weight: 6.3 grams. 1x 18ct yellow gold ring set with 3x oval opals and 4x old cut diamonds. Size: R. Weight

An early Australian 9ct yellow gold opal chip specimen bar brooch, J.M Wendt, Adelaide, Wt 4 grams

Verner Panton (Danish, 1926-1998), Panthella table lamp, designed 1971, manufactured by Louis Poulsen, white opal arcylic shade, with white powder-coated steel frame, retains manufacturer's label, height 58 cm, diameter 40 cm. Provenance: Private Collectio

9CT gold opal ring, modernist design set with oval shape opal

Australian opal and diamond halo statement ring, 14K white gold, the centre features, one oval cabochon cut greenish-blue base with colour play of green blue and teal Australian opal (4.23ct). Size O

9CT opal bar brooch, 9ct yellow gold with central polished Australian opal

Australian Arts and crafts opal doublet and 9ct gold (rose), pendant brooch, both marked 9ct. Approx weight 3.79 grams, length 50 mm

Loose purple- blue opal group ( 120.00ct)

Jewellery group includes rock crystal and silver approx: faceted rock crystal beads 38 cm has facet wear, opal doublet set silver brooch, gold filled long guard chain missing the clasp ring, Art Deco period chrysoprase glass bead necklace length 46 cm. Sil

10ct gold doublet opal ring, tested 10ct, featuring an oval cut doublet opal in a bezel setting, on a 10ct gold band, total weight 3.54gm, size S

George V gilt sterling silver gem set chalice, hallmarked Dublin, 1932, Lg (Larry Gunning), in the Gothic style in 24ct gold plated sterling silver, the calix featuring six round and six drop shaped amethyst stones amongst Celtic style knot borders, set ab

The Australian nugget 5 dollar coin and opal pendant; 1996, 1/20 oz fine gold kangaroo series coin set in an 18ct gold frame applied with a 6.3 x 4.2 mm fine crystal opal, size 18.40 mm, wt. 4.64g. With valuation.

An 18ct white gold opal brooch; 37 x 26 mm fine crystal opal of mainly green bluish violet colours to a twist wire surround, size 39.5 x 28.8 mm, wt. 16.9g.

10ct gold opal and diamond halo ring, a 1.65ct oval cabochon opal (good play of fire), claw set and surrounded by single cut diamonds with further diamonds to the split shoulders (Colour G-H, Clarity SI1-I1). TDW 0.33ct. Ring size N.

Art Deco 15ct gold, diamond and opal ring, an oval opal cabochon (good play of fire) in a rub over mount with a single old cut diamond to the top and bottom of mount, two old cut diamonds set to each shoulder. Not marked but tests as 15ct.

A heavy 9ct yellow gold Albert chain, graduated links with T-bar and gold framed opal pendant, length 44 cm. 54gm.

Peter Minturn 9ct gold, diamond and opal ring, a 1.50ct rectangular cabochon opal in a rub over setting to the centre of a wide triple split band, each set with a modern round brilliant cut diamond, stamped 9ct and PM, TDW 0.45ct. In original Minturn box.

14ct pink gold, opal, yellow sapphire and diamond ring, of cluster, design, centring a claw-set oval cabochon opal framed by a border, of circular-cut yellow sapphires and a further border, of single-cut diamonds to pierced shoulders, each accented by a si

14ct pink gold, opal, orange sapphire and diamond pendant necklace, of cluster, design, centring a claw-set free form cabochon opal framed by a border, of circular-cut orange sapphires and a further border, of brilliant-cut diamonds to a diamond-set bale,

An antique 15ct gold opal and ruby brooch, central floral cluster to fleur de lis shoulders all set with round cut rubies and round cabochon solid crystal opals (1 cracked, 1 chipped), with metal pin, size 42 x 15 mm, wt. 4.96g, with cert.

A vintage opal and diamond cocktail ring, featuring an oval cabochon semi black solid opal (16.12 x 12.44 x 7.42 mm) of mostly violet to yellow colours, to surround of 20 round brilliant cut diamonds totalling approx. 0.90ct in white gold basket mount to p

9ct rose gold opal ring, vintage ring set with five white polished opals

Antique gold opal and diamond bracelet, 9ct yellow gold hinged bangle with wire work decoration with central bright opal flanked by diamonds, hallmarked Chester 1899

A 9ct gold and opal triplet ring, a rose gold and purple stone pendant, a gold and moonstone pendant, two 9ct gold crucifixes and one rose gold chain, 19th and 20th century, (6 items)

An opal and diamond cluster ring, The solid white opal measuring 13.9 x 10.7 mm, surrounded by a single row of round brilliant cut diamonds totalling 0.60cts, 18ct white gold, 8.0gms.

Opal and diamond ring, the textured mount set with a boulder opal with blue, green, yellow and orange play of colour, accented with round brilliant-cut diamonds, estimated total diamond weight 0.45 carats, 18ct gold, weight 23.5gm, ring size T.

Opal and diamond pendant/brooch, the boulder opal carved as a wing and accented with round brilliant-cut diamonds, estimated total diamond weight 0.60 carats, 18ct gold, weight 17.5gm, length 5.5 cm. Recipient of international, design Award, Bangkok 1993..

Opal and diamond cluster ring, centring an oval shaped white opal, measuring approximately 12.40 x 110 x 3.30 mm, displaying green, blue, orange, yellow and pink play of colour, within a border of old European-cut diamonds, estimated total diamond weight 1

Opal and diamond brooch, the black opal carved in the form of a female figure and framed by round brilliant-cut diamonds, estimated total diamond weight 2.30 carats, 18ct gold, weight 13.9gm, length 8 cm. Recipient of international, design Award, Bangkok 1

Opal and diamond pendant, the opal triplet with blue, green, yellow and orange play of colour, measuring 300 x 19.80 mm, below a stepped bale set with baguette-cut diamonds, estimated total diamond weight 1.20 carats, stamped 750, weight 21.8gm, length 5.5

Large boulder opal specimen, of shaped rectangular form, with vibrant blue and turquoise opal veins, a/f (chip to one corner), 7.5 cm x 6 cm, thickness 1 cm-2.5 cm

18ct gold opal ring, stamped 18ct, to band, early 20th century, featuring three oval cabochon cut white opals, in a Victorian style pierced claw setting, total weight 3.88gm, size K

9ct gold opal ring, stamped 9ct, featuring a large oval cabochon cut opal in a six claw setting, set above a 9ct yellow gold backing and band, total weight 8.83gm, size O

Lovely early 20th century gold and opal brooch, mark rubbed (tested 12ct), in the form of a bow, bezel set with central oval triplet opal, the 12ct gold bow pierced and engraved with leaf and berry motifs, total weight 6.46gm, height 5 cm x width 4.5 cm

Australian 9ct gold solid opal ring, stamped 9ct to band, featuring an oval cabochon cut white opal stone in a four claw setting, set within an openwork organic setting, total weight 2.16gm, size N

Lovely 12ct gold and opal muff chain, early 20th century, unmarked, in fine uniform snake link design with seven spherical solid opal dividers, united via a 9ct gold spring ring clasp, total weight 12.3 cm, approx total length 128 cm

Australian 9ct gold boulder opal brooch, stamped 9ct, featuring an oval cabochon cut boulder opal in a twelve claw setting, set on a 9ct yellow gold bar brooch, total weight 5gm, length 6.2 cm

18ct gold opal brooch, stamped 18ct, with central bezel set doublet opal with rope twist surround, on a 18ct yellow gold tapered bar setting, total weight 3.68gm, length 5 cm

Australian 9ct gold white opal brooch, stamped 9c, featuring a large solid white opal in oval cabochon cut, in a six claw setting above a 9ct bar setting, total weight 4.66gm, opal approx. 2 cm x 1.4 cm, brooch length 5.4 cm

9ct gold white opal brooch, stamped 9ct, of organic form, set with four graduated oval cabochon cut solid white opals, each in a four claw setting, a/f (largest opal with fracture), total weight 5.33gm, width 4 cm

Gents 9ct gold solid opal dress ring, stamped 9ct to band, featuring a large bezel set opal in a thick and stately 9ct band, total weight 6.17gm, size X

9ct gold opal bar brooch, stamped 9ct, featuring a solid opal of oblong form in an eight claw setting, set on a 9ct yellow gold bar framework with engraved foliate accents, safety chain a/f, total weight 5.15gm, length 7.5 cm

9ct antique opal bangle, 9ct yellow gold wire bangle with central bright blue opal

An 18ct gold opal and diamond ring, doublet opal. Weight 4.9g. Size L.

An 18ct gold solid opal and diamond ring; two tone ring (yellow and rose gold). Weight 4.6g. Size P.

A vintage sterling silver and solid white opal brooch. Weight 11g. Length 77 mm.

An opal and emerald border oval pendant; 9ct gold. Weight 1.22g.

An opal triplet and diamond ring, together with a matching pair of screw back earrings, ring with 16 single cut diamonds, size M, earrings each with seven single cut diamonds, marked 18k gold but tests approx. 15ct. Estimated total weight of diamonds 30=0.

A pair of 18ct gold diamond and boulder opal earrings. Weight 3.4g.

A 9ct gold and Lightning Ridge opal pendant. Length 48 mm. Weight 8.7g.

A pair of 12ct gold opal triplet earrings, each a bezel set 12 x 8 mm opal triplet to a rope twist border suspended from a 7 mm half round bead to post and butterfly fittings, length 25 mm, wt. 6.40g, with cert.

Opal ring, rectangular opal with good play of colour, blue pinks and purple colours seen. Mounted in 18ct yellow gold. Size: T. Weight: 7.6 grams.

18ct yellow gold ring, set with a fine white crystal opal with good play of colour in a pin point pattern and having six small diamonds set on the periphery approximate weight 0.18ct. Size: N. Weight: 4.8 grams.

A selection of 14ct yellow gold jewellery, an oval tigers eye yellow gold ring, 1@ large black triplet free form opal in a 14ct setting and a large oval mixed cut pale smokey quartz ring. Total weight: 27.6 grams.(3)

An unusual devil's head stickpin, 18ct gold and opal, 8.5 cm high, 4.75 grams

A vintage Australian modernist brooch, sterling silver and 9ct gold with polished boulder opal in matrix, stamped '375, St. Silver', 4.7 cm wide, 13.4 grams total

An Australian Art Deco 18ct white gold brooch, set with a stunning solid white opal, flanked by two brilliant cut white diamonds, early to mid 20th century, maker's marks rubbed, 5.9 cm wide, 4.6 grams total

An antique Australian 9ct rose gold bar brooch, set with a solid polished opal, late 19th century, 4.5 cm wide, 3.9 grams total

A large oval black opal pendant of 35+ carats, mounted in an 18ct gold rub over setting. Colours green and blue with red and orange flashes. Gemologists report available, length 4.1 cm. 11.4g

Bulgari, Serpenti Forever bracelet, styled in gold tone metal with milky opal beige metallic Karung skin inserts, terminating in signature enamel set snake heads, inner diameter 60 mm.

Gae Aulenti Pipistrello 620 lamp for Martinelli Luce, white opal methacrylate diffuser. Base constructed from white lacquered aluminium with a stainless steel telescope stem. Stamped to the base and retains certificate of authenticity. Black plastic cord w

An opal pendant and chain, Oval solid white opal cut en cabochon measuring 24 x 15 mm, bezel set in a pierced silver frame and suspended from a flat link silver chain, total weight 10gms.

A gold and opal bangle, Of reeded oval form having a woven engraved panel set with solid white opals cut en cabochon, garnet and seed pearls, crafted in 9ct gold, total weight 8.30gms.

A gold and opal flying duck pendant, Crafted in 9ct gold and centrally set with an oval solid white opal cut en cabochon, total weight 2.7gms.

Two gold and gem set brooches, Comprising an opal triplet brooch in 9ct gold and a pearl and 9ct gold bar brooch, total weight 10.95gms.

An opal and diamond modernist ring, Rectangular solid white opal panel measuring 19.5 x 8.5 mm, offset by a vertical row of four round brilliant cut diamonds totalling 0.90cts, 18ct white gold, total weight 17gms.

A Rhoda Wager style gold and opal brooch, centrally set with an oval opal doublet within a lozenge shaped frame with gum leaf decoration, crafted in 9ct rose gold, total weight 7.30gms.

An opal triplet and diamond ring, the large oval opal triplet surrounded by a row of twenty eight round brilliant cut diamonds set in 9ct white gold, total weight 24.4gms.

An Arts and Crafts opal and gold brooch, openwork navette design, set with eight opal doublets amongst foliage, crafted in 15ct gold, total weight 5.05gms.

Garnet & opal Art Deco style silver set ring marked 925, ring size O

Opal triplet set 8ct yellow gold signet ring marked 333. Approx weight 2.37 grams, ring size M

Australian Arts & crafts 9ct rose gold ring set with a pink gemstone either a jasper or Australian pink opal. Marked 9ct. Approx weight 3.6 grams, ring size Q-R