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Opal and diamond earrings, featuring eight sections of black opal and four round brilliant cut diamonds weighing 0.06ct inlaid in 14ct yellow gold, stamped '14K', '585', 4 grams

Arthur and Georgie Gaskin, Arts & Crafts brooch, English, c. 1920, featuring opal cabochons, pink tourmalines and blister pearls bezel set in silver in a floral garland design, with Arthur Gaskin 'G' hallmark to verso, 9.30 grams. Provenance: purchased fro

An opal and diamond brooch by Frank Hyams, circa 1900, together with an opal bangle, the brooch set to the centre with an oval white opal measuring approximately 8.12 x 6.03 x 3.14 mmm, framed and flanked with old European-cut diamonds; the hinged bangle s

Vintage Australian opal and 9ct rose gold ring marked 9ct. Approx 1@ cabochon 8 x 9.5 mm, ring weight 3.8 grams, ring size O

Handmade Sapphire and 9ct yellow gold bee ring also set with a milky opal. Marked 375. Approx weight 8.3 grams, ring size K-L

A large Art Deco period opal and 9ct rose gold brooch. Marked 9ct. Approx size 29 x 2 9 x 8 mm, weight 18.6 grams total. Internal fractures to the stone

Australian Arts & Crafts yellow gold earrings set with opal doublets, marked 9ct. Approx weight 4.8 grams, 28 mm

Opal and 18ct yellow gold 'scarab' pendant signed by Robert Clerc (R. Clerc) 750. Approx length 36 mm. the opal is showing a good play of color, weight 12 grams

Vintage opal triplet set flower brooch with Oriental marks. Approx weight 7 grams, tests as low grade gold

Loose opal showing greens, blues, flashes of orange red and purple. Approx estimated weight 5.35ct, dimensions 23 mm x 8.4 mm x 3.4 mm

Loose boulder opal approx. size 29 mm x 24 mm x 6 mm

Loose black opal cabochon approx. weight 2.2ct

A large group costume jewellery also includes: three silver chains, seven watches, vintage fashion ear clips, opal triplet metal cuff bangle, beaded necklaces, a group of brooches including, enamel, silver and gem set pieces.

Vintage opal triplet set flower ring with Oriental marks. Approx weight 5.3 grams, ring size N. Tests as low grade gold

Early 20th century 15ct yellow gold circle brooch set with a an opal, with one missing. Marked 15ct. Approx weight 2.8 grams, width 28 mm

Two opal and shell rings, one a silver bypass mount collet set with an oval boulder opal, 12.24 x 6.15 mm, size N, and an adjustable metal ring with paua shell.

A 14ct gold opal ring, featuring an oval cabochon Ethiopian opal (12.35 x 8.85 mm) to wire twist surround above scrolling work gallery, size M, wt. 4.99g.

9ct single white opal dress ring, rub-over set on triple pierced shoulders oval cabochon approx 6.21ct

Victorian milk opal and diamond bridge ring, three oval cabochon opals interspaced with four old European cut diamonds

Art Deco 18ct white gold opal and diamond necklet, oval cabochon black opal approx 8.84ct with fancy diamond set shoulders on silver chain

18ct 23 stone opal and diamond cluster ring, pear shape cabochon green/red flash opal approx 3.31ct with diamond set cross-over type frame/shoulders

Jenny Pattrick (New Zealand) single opal ring, large natural form cabochon black opal on wide band with scroll and bead work

18ct white gold opal and diamond pendant, natural form cabochon white opal approx 7ct with rub-over surround pave set with diamonds, single round brilliant cut diamond head approx 0.27ct and diamond pave set hanger

A 15ct yellow gold framed boulder opal and seed pearl brooch, the lozenge form large cabochon opal of dark tone with vibrant highlights framed by seed pearls. Stamped 15ct, safety chain attached, length 3.2 cm.

7 various silver brooches. Including niello heart, operculum bar, tiger eye and filigree, marcasite, dagger, bloom and birds (enamel A/F) and opal triplet. Together with 2 Swedish 830 silver tie clips and slides.

9ct yellow gold 60s/70s opal triplet cufflinks W13.8g)

An antique opal, diamond and ruby brooch, the finely detailed insect, having a cabochon opal set body, ruby set eyes and rose cut diamond set wings, in 9ct gold, retailed by Hardy Bros Ltd, boxed.

A contemporary one of a kind handmade brooch by Christine Hafermalz-Wheeler. 2007. Features a 6.3 x 2.6 cm freeform botroidal agate, one bezel set 10 x .7 cm, opal and three bezel set .4 cm, cabochon cut fire opals. 18ct gold and sterling silver. Weight 42

Australian mid century 9ct yellow gold pendant and chain, set with a opal triplet. Marked 9ct the pendant and barrel clasp, chain length 40 cm, pendant length 30 mm, weight 2.7 grams

Vintage opal triplet and 9ct yellow gold ear clips marked 9ct F, weight 1.8 grams, cabochon size 7 x 5 mm

Mid century opal triple and 9ct rose gold tie tack marked 9ct to the setting only, size 10 x 8.8 mm, weight 1.2 grams

Opal triplet and 9ct rose gold tie tack marked 9ct, size 10 x 8 mm, weight 0.5 grams

Australian arts and crafts opal triplet pendant set in silver with gilt leaf decoration. Unmarked, size 27 x 17 mm. On a rolled gold chain

Antique boulder opal and 9ct yellow gold brooch marked H&P 9ct, cabochon size 15 x 22 mm, length 65 mm, weight 9.8 grams

Vintage opal triplet and 9ct yellow gold ring marked 9ct, ring size P, weight 3.8 grams, small chips to the edge

Vintage opal triplet and 9ct yellow gold ring marked 9ct, weight 3 grams, ring size O

Opal triplet, diamond and yellow gold ring marked 14k, weight 3.3 grams, ring size M-N

Vintage opal and 9ct yellow gold ring marked 9ct, weight 7 grams, purple crystal opal 11 mm x 10 mm, ring size U

Australian 9ct yellow gold and opal doublet drop ear clips. In the modernist style. Marked 9ct to the screw backs, length 34 mm, weight 2.6 grams. In a Percy marks box, likely original.

Gold opal ring, 9ct yellow gold opal ring

Antique opal row ring, vintage yellow gold opal diamond row ring set with three opals and inset with diamonds

Opal and diamond pendant, 14ct yellow gold opal and diamond pendant featuring centre, free form cabochon cut, Andamookan crystal opal, 10.91ct, colour play of red, orange, green, blue, yellow, two claw set, with 28 round brilliant cut diamonds, 0.20ct TDW,

Opal ring, 18ct yellow gold ring and abstract oval shape natural solid semi crystal opal with six diamonds G/H colour S12 clarity

Black opal brooch, set in a foliate frame

A silver opal cocktail ring, collet set with a 23.6 x 17.8 mm freeform cabochon Ethiopian opal, cracks, on plain shank, size Z++, wt. 10.56g.

Vintage stone set silver pendant, earrings and Art Deco brooch, pair Scandia silver leaf form clip earrings set with opal fragments, length 34 mm, a Deco marcasite set gazelle brooch, length 46 mm and a bone pendant set with a cabochon garnet, size 35 x 21

Silver stone set brooch and rings, modernist brooch centring a cabochon eliat stone made in Israel, length 58 mm, and 2 handmade rings, a silver gilt organic design set with crystal opal in matrix, size M, other Mexican Taxco set with cabochon turquoise, s

9ct gold stone set stick pin and tie bar, pin set with a round cut peridot to wreath surround, 8 mm, on metal pin, and 48 mm long engraved bar later rub set with a round cabochon solid opal with good play of colour, 7.4 mm, with metal back clip, total wt.

A 14ct gold opal and diamond ring, featuring an oval cabochon solid black opal, cracks, size 13.95 x 11.66 mm, with mostly blue and green colours flanked by 8 round brilliant cut diamonds totalling approx. 0.18ct, size N, wt. 4.27g.

A 9ct gold opal brooch, organic bar brooch centring a freeform 19 x 14 mm opal triplet, length 60 mm, wt. 7.50g.

15ct yellow gold brooch set with opal, diamond seed pearls and rubies

Australian opal and silver modernist brooch unmarked. Approx weight 9 grams, black opal 11.5 mm

Loose solid white opal dimensions 21 mm x 24 mm x 5.6 mm, 17.3ct

Antique boulder opal and rose gold stick pin size 10 x 8 mm

Black opal and 14ct yellow gold ring marked 14k 585. Approx freeform cabochon size 15 x 7.5 mm-3.3 mm, ring weight 7.8 grams, ring size N-O

Three antique Australian brooches includes a Arts & Crafts silver piece set with a bloodstone, a silver, marcasite set bow marked Stg Sil, and a opal example a/f

Opal, sapphire and 9ct yellow gold ring marked London 1984 375. Approx weight 2.6 grams, ring size O

Vintage opal triplet and rose gold pendant marked 9c. Approx size 15 x 19 mm, weight 2.77 grams

Australian modernist silver and opal pendant and fancy link silver chain marked STG Sil to the pendant and sterling to the necklace. Approx pendant width 45 mm, chain length 64 cm, weight 28 grams

An 18ct rose gold opal and diamond ring, three round cabochon opals each surrounded by small round brilliant cut diamonds.

An 18ct rose gold opal and diamond ring, a pear shape opal claw set and surrounded by small round brilliant cut diamonds in a semi twist mount, with more diamonds set to the shoulders.

An 18ct yellow gold solid boulder opal and diamond ring, a 2.97ct free form cabochon cut boulder opal (colour: solid white with strong colour play of blue and green, clarity: Opaque), claw set, with three round brilliant cut diamonds to one side.

Vintage 9ct gold opal pendant and ring, ring set with a 19 x 9.5 mm oval opal doublet between split shoulders, size M, pendant set with a 21 x 13 mm opal doublet in a plain frame with wire twist border and applied leaf highlights, length 39 mm, both opals

A vintage 9ct gold opal ring, rub set with a 13 x 8.5 mm crystal opal to plain flat surround, size Q, wt. 5.3g.

A white gold opal and diamond ring, centring an 11.5 x 10.5 mm crystal opal to upswept shoulders each set with a trilliant cut diamond, 2 totalling approx. 0.50ct, in 15ct gold, size O, wt. 4.21g.

An antique 18ct gold carved opal American Indian head arrow brooch; 68 mm long arrow applied with a carved boulder opal depicting profile of a native America Indian, 22.2 x 15.6 mm minor losses to head piece, no pin, gold stamped 18ct, with safety chain, w

An 18ct gold opal and diamond ring, centring a 9.6 x 7 mm oval cabochon black opal (approx. 1.40ct) to guilloche shoulders set with 4 round brilliant cut diamonds, size J1/2, wt. 3.39g.

Five unset opals and a pendant, 5 triplets and a nickel silver opal triplet pendant.

An 18ct gold opal and diamond pendant, 19.5 x 11.3 mm cabochon crystal opal secured by a floral cluster and crescent claws and bale set with 23 round brilliant cut diamonds totalling approx. 0.11ct, length 28 mm, wt. 3.78g.

A Mexican fire opal and diamond pendant, 23 x 22 mm freeform opal in an organic 9ct gold mount and bale set with 5 round brilliant cut diamonds, length 29.5 mm, wt. 5.47g.

14ct white gold opal and diamond pendant

Pair of 14ct white gold opal and diamond earrings

9ct yellow gold and opal gentlemans dress ring 7.4g

Australian opal solid loose stone

Opal and diamond jewellery a charming pendant and earring set having a 16.6 x 11.5 mm oval opal with good play of colour and an estimated of weight 5.3ct with 6= 0.01ct diamonds. The two earrings being set with oval opals 9.7 x 6.9 mm with good play of col

A vibrant artisan styled opal dress ring, 9ct yellow gold, made as a modern dress ring of abstract form, featuring a strong blue and green coloured solid opal, oval cabochon in cut, measuring 10.2 x 8.5 mm, bezel set in an open back, the solid opal flanked

A solid white marquise opal dress ring, 14ct yellow gold, made as a marquise shaped dress ring, set with a solid piece of solid opal measuring 23 x 7 mm, strong spectral colours throughout, claw set in a pierced scrolled gallery, merging to a smooth band.

A solid flat panelled semi black opal set signet ring, 14ct yellow gold, made as a rectangular flat panelled signet ring, featuring a polished solid piece of semi black opal, measuring 10.2 x 13.2 mm, horizontally set, flush into a gold frame, merging to w

Opal, garnet and diamond set white gold pendant / brooch. Marked 18k. Approx 2@ opals 10 x 6.5 mm & 7.5 x 6 mm, 4@ oval cut garnets one chipped, 10x old cut diamonds, 52@ single cut diamonds, brooch weight 11.8 grams. Tests as 6ct

Vintage opal and diamond set 18ct white gold ring also with a platinum setting. Marked 18ct plat. Approx 11 mm x 7 mm cabochon 1.95ct, 12x round brilliant cut diamonds estimated weight 0.42ct, VS-Si clarity, ring weight 5.9 grams, ring size N.

Vintage opal triplet and 9ct rose gold dress ring marked 9ct. Approx freeform size 24 mm x 26.5 mm. Ring height 29 mm, weight 19 grams, ring size U

Antique Australian opal and 15ct yellow gold brooch, also set with seed pearls and peridots. Marked 15ct . Approx opal size 18 mm x 11 mm x 3.8 mm, pendant length 42 mm ex bail, total weight 9.3 grams. Black opal is showing strong red orange colour, with f

Boulder opal, diamond and yellow gold pendant set in 18ct yellow gold and with a 9ct gold enhancer. Appro@ freeform size 24 mm @ 20 mm, 9@ round brilliant cut diamonds, total weight 9.3 grams

Vintage Australian opal triplet and silver brooch marked Stg Sil. Approx width 55 mm, 9.3 grams

Australian Arts & Crafts silver pendant brooch set with a opal doublet. Marked Jc silver to the bar only. Approx length 48.5 mm,

Victorian 18ct five stone opal and diamond bridge ring, scroll claw set

18ct white gold single black opal triplet bar brooch, oval gem with fancy shoulders

14ct white gold Lightning Ridge black opal and diamond pendant, free form cut opal approx 4.10cts, with head of three round brilliant cut diamonds

14ct Mintabie opal and diamond pendant, free form cut fiery milk opal approx 7.80cts with pin and bell cap pave set with 132 round brilliant cut diamonds 0.63cts TDW

14ct opal and diamond dress ring, free form cut intense grey opal approx 6.35cts with surround of 43 round brilliant cut diamonds approx 0.43cts TDW

Antique 18ct yellow and white gold brooch with solid cabochon of opal with green, blue and orange flash, 8.50ct

18ct yellow gold pendant with solid cabochon of opal with green, blue and orange flash, 8.0ct

18ct yellow gold brooch with 10.00ct solid opal cabochon

Tony White, a cultured pearl, opal and diamond brooch, designed as a bee, set with opal, round brilliant-cut diamonds and an oval and drop-shaped cultured pearl, the latter measuring approximately 11.90 x 9.88 mm, signed white, estimated total diamond weig

Tony White, a cultured pearl, diamond and opal necklace, composed of two strands of cultured Tahitian South Sea pearls, measuring approximately 8.75 mm, centring a boulder opal framed by round brilliant-cut diamonds, signed white, estimated total diamond w

An opal and diamond ring, centering an oval opal, measuring approximately 19.50 x 13.60 mm, within a border of round brilliant-cut diamonds, mounted in 18ct gold, size O.