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14ct 43 stone opal and diamond cluster ring centre cabochon opal 7.98cts with surround and shoulders of 42 round brilliant cut diamonds 0.54cts TDW

18ct 13 stone black opal and diamond cluster ring central round cabochon opal with diamond frame raised on fancy gallery

9ct single fire opal and crystal cluster brooch central oval bright orange opal 9.81cts, opal scallop frame set with 24 clear crystals

18ct & platinum 13 stone opal and diamond cluster ring rub-over oval cabochon fiery opal with individual set diamond scallop frame

Elio Martinelli 'Serpente' table lamp for Martinelli Luce, white opal plastic, chromed steel swiveling arm base. Italy, designed 1965, 46 cm high, 43 cm wide, 45 cm deep

Opal and diamond set 18ct yellow gold ring marked 750, opal cabochon size 3 x 5 mm, ring size M, weight 2.88 grams. C607A

Opal triplet and 9ct yellow gold pendant marked 375, weight 0.9 grams

Edwardian 9ct rose gold ring set with a crystal opal and two empty settings, marked makers Sun anchor 9ct, width 8 mm, weight 3.5 grams, ring size Q

Arts & crafts opal triplet and gilt stud earrings, marked 9, weight 3.8 grams, triplet size 8 x 8 mm. Missing a back

Opal and rose gold pendant on a 14ct yellow gold flat chain, the pendant is marked 375 the chain 585, chain weight 1.56 grams, pendant weight 0.5 grams, opal size 6 x 4 mm, chain length 44 cm

Antique crystal opal and silver brooch unmarked, crystal opal cabochon size 4 mm, brooch width 22 mm. Silver untested

White opal and rose gold brooch unmarked, freeform size 13.6 mm x 14.2 mm, brooch weight 4.6 grams, tests as 9ct

Opal, diamond and 18ct yellow gold pendant marked 750, free form crystal opal size 19.5 mm x 6 mm x 5.2 mm, pendant weight 4.4 grams

'Antique Australian 18ct gold and opal ring by Stewart Dawson & Co, marked S D & Co. 18. 4.3gms, one opal is chipped, opal size 3 x 5 mm- 4.6 x 7 mm, ring weight 4.3 grams, ring size J'

A 14ct gold opal pendant; set with an oval cabochon solid crystal opal, size 23 x 12 mm, wt. 2.05g.

A vintage 10ct gold opal brooch; floral motif set with an 8.5 x 14.5 mm oval opal doublet adjacent to a Florentine engraved leaf tied at the base with a ribbon, size 55 x 20 mm, wt. 3.97g.

A pair of antique gold opal and garnet cluster earrings; each centring an oval cut solid crystal opal to surround belcher set with 10 round cut green demantoid garnets (chipped) on locking shepherds hook fitting, size 15 x 8.6 mm, wt. 2.19g.

A large boulder opal paperweight. Length 8 cm.

A group of five assorted jewellery pieces, a group of five assorted jewellery pieces, including a marcasite set armed Forces brooch, a trench art three and six pence bracelet, a silver boomerang and koala brooch, an opal triplet pendant on chain and a plat

A group of three jewellery items, a group of jewellery, seed necklace, opal triplet brooch and boulder opal pendant, a group of three jewellery items, including a necklace of native seeds, a boulder opal pendant and a opal triplet brooch.

Two antique gold lockets, one double sided with an image of a gentleman and a baby to verso, scalloped border and beaded detail, the other opal inlaid with the Australian coat-of-arms and a clover leaf to verso, scroll and beaded detail - note this piece w

Two antique Australian opal brooches, both set with light opals, one in the form of a wreath with seed pearl detail, the other on a split bar with beaded terminals; both 9ct gold. Total weight 7.5g.

A textured gold and opal brooch / pendant, featuring bark finish gold work, set with ten cabochon cut light opals; testing as 14ct gold. Weight 21.2g.

Three gold jewellery items, including an opal boomerang brooch, a blue paste stone bar brooch (15ct) and a heart shaped locket; 9ct and 15ct gold. Total weight 7.6g.

Modernist silver gilt and boulder opal brooch marked 925, length 73 mm,

Australian opal triplet set 9ct yellow gold brooch marked 9ct, weight 7.6 grams, length 45 mm

Vintage Australian opal and 9ct white gold brooch marked 9ct, solid white opal size 24 x 15.5 mm, showing flashes of blue, red, green, orange and some purple colour one line of internal crazing. brooch weight 8.4 grams

Opal and garnet set yellow gold ring rubbed marks, weight 5 grams, cabochon size 8 x 5.5 mm, ring size O. Tests as 10ct

18ct Yellow gold panelled necklace With fancy panelled flat back links marked 750 makers to the chain and the pendant is unmarked 9ct rose, link width 4.4-7.7 mm, length 49 cm, weight 16.6 grams. The opal triplet pendant tests as gilt

Opal triplet and gold stud earrings and group aslo includes early 20th century rose gilt metal and foil back ear clips and a silver Paua shell set silver bird brooch . The Opal triplets are marked 585 to the settings only, size 5 x 6 mm

Modernist opal and yellow gold ring unmarked, weight 4.9 grams, opal size 12 x 10 mm, ring size G-H, Tests as 10ct

Vintage Australian opal and 9ct yellow gold pendant. Marked 9ct, black opal 27.5 mm x 8 mm x 3.2 mm, x2 boulder opal 9 x 2 mm, weight 3.2 grams, black opal purple with strong flash of red

A good Opal and yellow gold pendant marked 18ct, free form crystal opal size 16.6 mm x 13 mm x 3.2 mm. Strong play of colour, includes red yellow, ornage, green, blue and purples.

Vintage opal triplet and 18ct yellow gold brooch marked 18ct, weight 6.6 grams, length 50 mm, a/f to triplet

Art Deco opal set 9ct yellow gold brooch also set with a small garnet cabochon, opal diameter 6 mm, weight 2.4 grams

Colonial opal and yellow gold stick pin unmarked, boulder opal size 14 x 8 x 3.7 mm, total weight 3.2 grams, In box. With a hand written note given to grandfather Watson Augustus Steel by the Police at Sofala 1890

Vintage opal triplet and 9ct yellow gold ring with diamond supporters. Marked 9ct, weight 3 grams, ring size N-O

Antique Australian boulder opal and 9ct gold ring marked 9ct. In a Hollingdale & Kessel box, ring size M-N, weight 2.4 grams

Five stone crystal opal and silver ring unmarked, ring size O

Modernist silver gilt and yellow gold ear clips set with boulder opal beads, marked 18k to the screw backs and 925, weight 4.7 grams, length 24 mm

Modernist silver gilt and boulder opal brooch as well as a silver gilt pendant, length 61 mm and 40 mm

Vintage opal and 9ct yellow gold ring marked 9ct, weight 1.8 grams, ring size P-Q

A bar brooch, featuring an opal doublet in blue and red tones, on 9ct yellow gold, with metal pin. Not stamped. Weight 3.2g.

A 9ct gold bar brooch, set with opal doublet. Weight 4grams.

An opal and diamond ring, oval opal slice (probably doublet) in an Art Nouveau style setting, enhanced with eight diamonds of approx. 0.05ct each, set in 18ct white gold. Size O. Weight 8.5grams.

A gent opal ring, opal oval doublet with blue play-of-colour, in 9ct yellow gold. Size O. Weight 4.9grams

A solid crystal opal set brooch, oval cabochon cut opal with play-of-colour, set in 9ct gold. Weight 1.6grams.

A sterling silver ring, set with a boulder opal. Size O-P. Weight 24.2grams

An opal ring, 18ct white gold. Size M. Weight 1.6 grams.

An opal triplet and 10ct gold ring. Size M. Weight 3.1grams.

A boulder opal set ring, round cut stone on 14ct gold. Size P. Weight 3.1grams.

A bar brooch, set with a white opal, single diamond, on 9ct gold. Weight 3.4grams.

A gold and opal bar brooch made from a row of nine graduated and polished solid Coober Pedy white opals, early 20th century, formerly the property of Dame Mary Cook. 5.2 cm wide. Provenance: The Cook family, by descent.

A vintage graduated opal and crystal bead necklace with rose gold plated clasp, early 20th century, each bead turned from solid Coober Pedy white opal. Formerly the property of Dame Mary Cook. Requires restringing. 44 cm long. Provenance: The Cook family,

Artisan made 18ct yellow gold brooch set with an impressive Lightning Ridge black opal, 4 cm high, 7.7 grams total

An 18ct white gold ring set with an impressive solid Coober Pedy white opal surrounded by two rows of white diamonds, stamped '750, 18ct',

An antique rose gold and solid opal stickpin, hoop earring and diamond set bar brooch (incomplete), 19th century, (3 items), 4.7 grams total

An antique gold bar brooch set with sold opal surrounded by old cut diamonds, 19th century, stamped '9ct', 5.75 cm wide, 5.7 grams

An opal and gemstone ring, set in silver gilt with 3 oval cabochon Ethiopian opals and 8 round cut tanzanites, size M, top 16 mm wide, wt. 3.90g.

An 18ct gold opal bar brooch, featuring a 10.42 x 6.74 x 3.31 mm oval cabochon solid crystal opal with good colour display to wire twist and leaf surround on wave bar, size 41 x 12 mm, wt. 3.93g.

An 18ct gold boulder opal pendant, free form polished opal with good play of colour, size 15 x 10 mm. Wt. 2.30g.

A boulder opal and australian sapphire pendant necklace, featuring a pear-shaped boulder opal pendant, accented with gold bow detail, suspended from a sapphire bead necklace, the front accented with gold spacers, signed White, gross weight approximately 25

A pair of gold, diamond and opal pendants, the pendants each set with an oval-shaped opal to a frame decorated with starfish motifs, one pendant set with a round brilliant-cut diamond, weighing approximately 0.10 carats, both signed White, gross weight app

A pair of opal earrings, the stylized gold leaf tops suspending a bezel-set pear-shaped boulder opal, signed White, gross weight approximately 15.30 grams, mounted in 18ct gold, length 4.00 cm.

A pair of white opal earrings, each set with a white opal baton, capped with gold bow detail, signed White, gross weight approximately 8.80 grams, mounted in 18ct gold, length 3.20 cm.

A rock crystal, amber and Mexican fire opal necklace, the necklace composed of a strand of alternating rock crystal and amber beads, centring a large triangular-shaped Mexican fire opal pendant, weighing approximately 41.50 carats, gross weight approximate

Victorian opal Potch and diamond stick pin, carved in the form of a monkey head with rough cut diamonds for eyes, overall length 7.6 cm

Victorian 9ct gold and opal stick pin, featuring an oval solid boulder opal in a 9ct gold setting, opal length 1.2 cm, overall length 6.7 cm

Victorian 15ct gold and opal brooch, hallmarked 15ct, modelled in the form of a sword and sheath joined with a safety chain, the brooch inset with sixteen round opals, the largest measuring 4 mm in diameter, length 7.5 cm, total weight 4.45gm

Pearl pendant, bracelet and opal ring 9ct pendant set with a South Sea cultured pearl and diamonds affixed to 9ct chain. 10.2 grams. A fine 9ct yellow gold brace set with eight 6.5 mm round freshwater pearls. Weight: 5.0 grams. Oval shaped opal dress ring

9ct gold bracelet, with solid crystal opal ball shape stones

Pair of platinum, opal and diamond earrings, each of cluster design, centring a claw-set oval cabochon opal framed by a border of similarly set brilliant-cut diamonds, the opals and diamonds together weighing approximately 5.91 carats and 0.94 carat respec

Platinum, opal and diamond ring, of cluster design, centring a claw-set oval cabochon opal weighing 10.84 carats surrounded by one continuous border and one spaced border of similarly set brilliant-cut diamonds, to shoulders partially set with brilliant-cu

18ct white gold, opal and diamond pendant necklace, of cluster design, centring a claw-set oval opal cabochon framed by a border of pave-set brilliant-cut diamonds to a similarly set bale, completed by a fine trace link chain, the opal and diamonds togethe

18ct white gold, opal and diamond ring, of cluster design, centring an oval cabochon opal and framed by a border of claw-set brilliant-cut diamonds, the opal and diamonds together weighing approximately 5.63 carats and 0.70 carat respectively, size K 1/2.

Sidse Werner (Denmark, 1931 - 1989) for Holmegaard, a large 'Apoteker 255' glass pendant lamp shade, hand-blown in opal glass to give a soft light, original Holmegaard label and with original fitting, 35 x 35 x 30 cm

Sidse Werner (Denmark, 1931 - 1989) for Holmegaard, a pair of 'Apoteker 255' glass pendant lamp shades, hand-blown in opal glass to give a soft light, original Holmegaard labels and with original fittings, 25 x 25 x 25 cm

Antique 9ct silver lined cross & opal cufflinks opal size 7 x 9 mm

Opal and diamond set silver ring marked 925. Approx opal size 6 x 5 mm, ring width 6 mm, ring size R

Antique opal and 9ct yellow gold brooch marked 9ct. Approx opal size 11 x 8 mm, brooch weight 3.8 grams

Opal triplet and 9ct rose gold pendant on chain, marked to pendant only. Pendant size 9 x 13 mm, weight 1.2 grams, ex chain (tests as Gold filled)

Solid white opal and 9ct white gold ring marked 375. Approx 1@ cabochon 15 mm x 8 mm x 5.3 mm, ring size P, weight 5.4 grams

Opal and yellow gold pendant unmarked. Approx 20 x 15.8 x 5.8 mm pear cabochon opal, total pendant weight 3.5 grams. Provenance: The Logan estate.

Opal and yellow gold pendant marked 750. Pear shaped cabochon size 15 x 11 mm, total weight 4.9 grams. Tests as 16ct

Black opal and yellow gold chandelier pendant marked 18ct. Cabochons: round x2 (7 mm dia.), oval x3 (6 x 8 mm), x1 (5 x 8 mm), x1 (9 x 6 mm), pear (12 x 4.5 mm), free form x4: (5 x 8 mm), (7 x 9 mm), (6.5 x 9.4 mm), (7 x 9.6 mm), pendant length 5 cm ex bai

Opal and 9ct yellow gold 'daisy' bracelet marked 9ct. Approx 4@ white opal cabochons 8 x 6 mm, length 18 cm, weight 7.6 grams

Vintage opal triplet and 9ct yellow gold stud earrings. Marked 9ct. Size 7 x 5 mm, weight 0.8 grams

Antique Australian opal and 15ct yellow gold brooch. Marked 15c J. Stee*' Later metal pin only. Length 50 mm, weight 6.5 grams

Vintage opal, diamond and two tone gold ring marked AC 375 750. Approx opal size 7.5 x 5.4 mm, ring size L, weight 4.5 grams

Antique Australian opal and 9ct yellow gold cufflinks, marked 9 Aronson & Co Melbourne. Total weight 5 grams, 2@ oval cabochon size 9 x 4 mm. Provenance: The Logan estate.

Victorian opal and diamond set yellow gold brooch in a Hardy Bros. Sydney box. Length 75 mm, weight 11 grams, 19x oval opal cabochons 2 x 2.3 mm - 8.5 x 5.4 mm. Tests as 18ct gold. Estimated opal weight 6.90ct of South Australian crystal opal type. Provena

An opal and diamond pendant, freedom opal triplet, 26.6 x 15.4 mm set in 9ct gold with 3 graduated diamond set white gold bale, wt, 4.04g.

A vintage 9ct gold opal bridge ring, belcher set with 5 oval cabochon light opals, size O, width 7 mm, wt. 2.02g.

A vintage 14ct gold opal and diamond ring, set across the top with 3 cabochon solid opals (wear) between 4 round brilliant cut diamonds, size K1/2, width 5 mm, wt. 2.64g.

An opal and gemstone ring, set in silver gilt with 2 oval cabochon ethiopian opals and 8 round cut tanzanites, size N1/2, top 16 mm wide, wt. 3.90g.

A gent's vintage 9ct gold opal signet ring, featuring a rectangular cabochon solid opal, 13.13 x 11.06 mm of good colour display (scuff) to enclosed back and concave tapering shoulders, size W1/2, wt. 7.79g.