Results for “opal 18k”

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Cocktail Ring in 18k Yellow Gold with Natural Opal and Diamond Accents: Cocktail Ring in 18k Yellow Gold with Natural Opal and Diamond Accents This cocktail ring features a natural gray opal cabochon with a vibrant play of colors, set in solid 18k yellow gold. Accentuatin

6 days Left

Cocktail Ring in 18k Yellow Gold with Natural Opal and Diamond Accents

Est. $1,534-$1,994

$100

BidhausNew York, NY

Victorian 18k Gold Fancy Bracelet with 18.00ct Diamonds and Fire Opals: Victorian 18k Gold Fancy Bracelet with 18.00ct Diamonds and Fire Opals This exquisite vintage bracelet showcases a stunning design crafted from 18k yellow gold. It features a triple row arrangement wi

May 23, 2026

Victorian 18k Gold Fancy Bracelet with 18.00ct Diamonds and Fire Opals

Est. $9,880-$12,844

$100

BidhausNew York, NY

May 31, 2026

OPAL DIAMOND CROSS DROP PENDANT 18K 750 WHITE GOLD

Est. $1,050-$1,540

$25

NY Elizabeth Beverly Hills, CA

Important Jeweled 18K Gold Ecclesiastical Chalice Catholic Church Communion Sapphire Embedded: Described By: Rafe CNX 0461 1489 Title: Important Jeweled 18K Gold Ecclesiastical Chalice Catholic Church Communion Sapphire Opal Goblet Reverend Zimmer Description: Important Jeweled 18K Gold Ecclesi

Jun 11, 2026

Important Jeweled 18K Gold Ecclesiastical Chalice Catholic Church Communion Sapphire Embedded

Est. $100,000-$150,000

$2,600

Hess Fine AuctionsSt Petersburg, FL

AN IMPRESSIVE FIRE OPAL RING The cushion-shaped fire opal weighing approximately 13.20cts, within a: AN IMPRESSIVE FIRE OPAL RING The cushion-shaped fire opal weighing approximately 13.20cts, within a six-claw setting, to a plain hoop, mounted in 18K gold , ring size N There are gemstones that sparkl

7 hrs Left

AN IMPRESSIVE FIRE OPAL RING The cushion-shaped fire opal weighing approximately 13.20cts, within a

Est. €5,000-€6,000

€2,400

Adam's AuctioneersIreland, Dublin

JACK GUTSCHNEIDER 0.00CTDIAMOND OPAL 18K GOLD LARGE DRAGONFLY PIN: JACK GUTSCHNEIDER 0.00CTDIAMOND OPAL 18K GOLD LARGE DRAGONFLY PIN Jack Gutschneider 0.00ctDiamond Opal 18k Gold Large Dragonfly Pin Description This is an eye catching large dragonfly brooch by JG Jew

2 days Left

JACK GUTSCHNEIDER 0.00CTDIAMOND OPAL 18K GOLD LARGE DRAGONFLY PIN

Est. $13,180-$14,731

$10,750

Modern JewelryValley Village, CA

VICTORIAN 18.00CT OLD MINE CUT DIAMOND & OPAL 18K GOLD FANCY BRACELET: VICTORIAN 18.00CT OLD MINE CUT DIAMOND & OPAL 18K GOLD FANCY BRACELET Victorian 18.00ct Old Mine Cut Diamond & Opal 18k Gold Fancy Bracelet Description This lovely vintage bracelet is crafted from 18k

5 days Left

VICTORIAN 18.00CT OLD MINE CUT DIAMOND & OPAL 18K GOLD FANCY BRACELET

Est. $14,581-$16,296

$12,000

Modern JewelryValley Village, CA

NECKLACE MEXICAN OPAL & OLD MINE CUT DIAMOND 18K GOLD PENDANT & CHAIN: NECKLACE MEXICAN OPAL & OLD MINE CUT DIAMOND 18K GOLD PENDANT & CHAIN This Mexican Opal and Old Mine Cut Diamond Necklace features a pear-shaped pendant set in 18k yellow gold. The vintage-inspired de

5 days Left

NECKLACE MEXICAN OPAL & OLD MINE CUT DIAMOND 18K GOLD PENDANT & CHAIN

Est. $8,137-$9,094

$6,700

Modern JewelryValley Village, CA

FEATURED

18K Gold Natural Opal Diamond Pendant: Title: 18K Gold Natural Opal Diamond Pendant Description: This pendant features 18K gold set with natural opal and diamonds. The main stone is 6.2 carats, showcasing a rich golden hue with a cool whit

18K Gold Natural Opal Diamond Pendant

Est. $3,000-$4,000

$2,000

Chairish AuctionsNew York, NY

ANGELA CUMMINGS FOR TIFFANY & CO.: A PAIR OF 18K GOLD AND GEM-SET EARRINGS: ANGELA CUMMINGS FOR TIFFANY & CO.: A PAIR OF 18K GOLD AND GEM-SET EARRINGS Each designed as a butterfly, with onyx, coral and opal inlay; signed T&Co.; with maker's mark; measures 1 3/8 x 13/16 in. Fo

May 19, 2026

ANGELA CUMMINGS FOR TIFFANY & CO.: A PAIR OF 18K GOLD AND GEM-SET EARRINGS

Est. $4,000-$6,000

$4,000

BonhamsLos Angeles, CA

18K Gold Natural Opal Diamond Pendant: Title: 18K Gold Natural Opal Diamond Pendant Description: This pendant features a meticulously set 18K gold with a 2.9-carat natural opal as the centerpiece, showcasing vibrant colors. The rich gold s

18K Gold Natural Opal Diamond Pendant

Est. $2,000-$3,000

$1,500

Chairish AuctionsNew York, NY

15.5-11.7MM OPAL 0.75 CARAT OLD EUROPEAN DIAMOND 18K GOLD COCKTAIL RING: 15.5-11.7MM OPAL 0.75 CARAT OLD EUROPEAN DIAMOND 18K GOLD COCKTAIL RING PRODUCT DESCRIPTION Title: 1.00 Carat Oval Shape 0.75 Carat Old European Cut G VS Diamond 18 Karat Two Tone Gold Cocktail Ring S

May 24, 2026

15.5-11.7MM OPAL 0.75 CARAT OLD EUROPEAN DIAMOND 18K GOLD COCKTAIL RING

Est. $6,700-$7,488

$5,500

Modern JewelryValley Village, CA

CASBAH 18K YELLOW GOLD MARQUISE CUT AUSTRALIAN FIRE OPAL & DIAMOND HALO RING: CASBAH 18K YELLOW GOLD MARQUISE CUT AUSTRALIAN FIRE OPAL & DIAMOND HALO RING CASBAH 18k Yellow Gold Marquise Cut Australian Fire Opal & Diamond Halo Ring Casbah 18k gold heavy 2.0ct VS1 clarity and F

May 31, 2026

CASBAH 18K YELLOW GOLD MARQUISE CUT AUSTRALIAN FIRE OPAL & DIAMOND HALO RING

Est. $3,391-$3,790

$2,750

Modern JewelryValley Village, CA

18K GOLD VINTAGE RING PRINCESS TOP NATURAL OPALS & RUBIES ( SIZE: 7 ) 6.8G: 18K GOLD VINTAGE PRINCESS TOP OPAL RUBY RING 18k Gold Vintage Princess Top Opal Ruby Ring You are bidding on a pre-owned Vintage Princess Ring . The ring is in vintage condition. Features 18k gold, ri

May 24, 2026

18K GOLD VINTAGE RING PRINCESS TOP NATURAL OPALS & RUBIES ( SIZE: 7 ) 6.8G

Est. $2,209-$2,469

$1,800

Modern JewelryValley Village, CA

18K Opal Diamond Ring: Type: Ring Metal:18K White Gold Opal:3.37ctDiamond:0.80ctSize:7(US)Signed By: N/A

May 30, 2026

18K Opal Diamond Ring

Est. $800-$1,110

$300

Koufuku.co LimitedKowloon, HK

Size 9 .20ct Pear Cut White Opal in 18K Gold Plated Ring: Size 9 .20ct Pear Cut White Opal in 18K Gold Plated Ring. Please view photos for further details.

May 21, 2026

Size 9 .20ct Pear Cut White Opal in 18K Gold Plated Ring

Est. $150-$250

$80

Weatherham Estate TreasuresCobourg, ON

Size 9 .19ct Marquise Cut Opal in 18K Gold Plated Ring: Size 9 .19ct Marquise Cut Opal in 18K Gold Plated Ring Please view photos for further details.

May 21, 2026

Size 9 .19ct Marquise Cut Opal in 18K Gold Plated Ring

Est. $140-$210

$90

Weatherham Estate TreasuresCobourg, ON

Size 8 0.15ct Oval Cut White Opal in 18K Gold Plated Ring: Size 8 0.15ct Oval Cut White Opal in 18K Gold Plated Ring. Please view photos for further details.

May 21, 2026

Size 8 0.15ct Oval Cut White Opal in 18K Gold Plated Ring

Est. $130-$200

$70

Weatherham Estate TreasuresCobourg, ON

13mm Black Opal and 18K Yellow Gold Vintage Ring: 13mm Black Opal and 18K Yellow Gold Vintage Ring - THIS ITEM WILL COME WITH A $5,500 INSURANCE VALUATION REPORT IN THE WINNING BIDDER'S NAME. This striking vintage ring is finely crafted in solid 18k

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13mm Black Opal and 18K Yellow Gold Vintage Ring

$5,000

GWS Auctions Inc.Maitland, FL

OPAL DIAMOND GOLD NECKLACE ENAMEL 18K YELLOW BUTTON LINK VINTAGE UNIQUE: OPAL DIAMOND GOLD NECKLACE ENAMEL 18K YELLOW BUTTON LINK VINTAGE UNIQUE This is a beautiful vintage long necklace; it is crafted from 18k yellow gold featuring alternating long rectangle shape with te

2 days Left

OPAL DIAMOND GOLD NECKLACE ENAMEL 18K YELLOW BUTTON LINK VINTAGE UNIQUE

Est. $26,144-$29,220

$21,500

Modern JewelryValley Village, CA

ESTATE 16.69CT OPAL SAPPHIRE 18K YELLOW GOLD LONG FLORAL RING: ESTATE 16.69CT OPAL SAPPHIRE 18K YELLOW GOLD LONG FLORAL RING ! Estate 16.69ct Opal Sapphire 18k Yellow Gold Long Floral Ring ! Description This is a stunning Estate ring, it is crafted from 18k yello

2 days Left

ESTATE 16.69CT OPAL SAPPHIRE 18K YELLOW GOLD LONG FLORAL RING

Est. $18,591-$20,778

$15,250

Modern JewelryValley Village, CA

VICTORIAN GOLD OPAL BROOCH 18K YELLOW LARGE CURVED SHAPE ENAMEL DESIGN: This is a gorgeous Victorian Era piece that exudes classic elegance. Crafted from 18k yellow gold, this brooch features a stunning multicolor opal cabochon set in a prong setting, ensuring that it is

2 days Left

VICTORIAN GOLD OPAL BROOCH 18K YELLOW LARGE CURVED SHAPE ENAMEL DESIGN

Est. $10,113-$11,303

$8,300

Modern JewelryValley Village, CA

Authentic! Van Cleef & Arpels Alhambra 18k White Gold Pink Opal Bracelet Cert.: Van Cleef & Arpels Alhambra bracelet in 18k white gold featuring five soft pink opal motifs framed by delicate beaded edges. Feminine, elegant, and luminous, it embodies the iconic Alhambra symbolism

5 days Left

Authentic! Van Cleef & Arpels Alhambra 18k White Gold Pink Opal Bracelet Cert.

Est. $33,000-$40,000

$22,000

Chairish AuctionsNew York, NY

Tiffany & Co. Vintage 18k Gold Opal Mother of Pearl Pansy Clip-On Earrings: Tiffany & Co. Vintage 18k Gold Opal Mother of Pearl Pansy Clip-On Earrings These exquisite vintage clip-on earrings from Tiffany & Co. feature a beautiful inlaid design showcasing natural opals and mo

1 day Left

Tiffany & Co. Vintage 18k Gold Opal Mother of Pearl Pansy Clip-On Earrings

Est. $20,501-$23,063

$7,700

Diamond DepotNew York, NY

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