Results for “opal 18k”

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18K WHITE GOLD 0.20CT DIAMOND AND OPAL PENDANT NECKLACE: A 3.05 carat green Opal center stone adds color, texture, and dimension to this captivating necklace. Set in 18K White Gold, Diamonds totaling 0.20 carats surround the center stone for an added touch

4 days Left

18K WHITE GOLD 0.20CT DIAMOND AND OPAL PENDANT NECKLACE

Est. $2,600-$10,400

$2,600

Robinhood AuctionsLas Vegas, NV

May 24, 2026

18K YELLOW GOLD BLACK OPAL NECKLACE

Est. $2,250-$3,300

$25

NY Elizabeth Beverly Hills, CA

8.50ct Opal, 0.50ctw Diamond and 18K White Gold Ring: 8.50ct Opal, 0.50ctw Diamond and 18K White Gold Ring - THIS ITEM WILL COME WITH A $6,500 INSURANCE VALUATION REPORT. Elegantly timeless and richly luminous, this exquisite ring is crafted in polished

May 30, 2026

8.50ct Opal, 0.50ctw Diamond and 18K White Gold Ring

Est. $6,000-$6,500

$800

GWS Auctions Inc.Maitland, FL

4 days Left

OPAL DIAMOND NECKLACE 18K YELLOW GOLD 750

Est. $1,425-$2,090

$25

NY Elizabeth Beverly Hills, CA

18K YELLOW GOLD 1.60CT DIAMOND AND OPAL RING: This exquisitely crafted ring is endlessly captivating. At the center, a stunning 15.0 carat Opal adds a stylish pop of color. Round-cut Diamonds with a total weight of 1.60 carats surround the center

4 days Left

18K YELLOW GOLD 1.60CT DIAMOND AND OPAL RING

Est. $2,600-$10,400

$2,600

Robinhood AuctionsLas Vegas, NV

Australian Opal Diamond Paraiba Tourmaline Peacock Pendant in 18k Yellow Gold: Australian Opal Diamond Paraiba Tourmaline Peacock Pendant in 18k Yellow Gold This pendant features a dual peacock design crafted in solid 18k yellow gold. At its center is a natural Australian opal i

May 25, 2026

Australian Opal Diamond Paraiba Tourmaline Peacock Pendant in 18k Yellow Gold

Est. $6,630-$8,619

$100

BidhausNew York, NY

18K Yellow Gold Opal And Diamond Ring, Size 6.25: 18K yellow gold ring featuring an oval opal cabochon flanked by two small diamonds. Ring size 6.25. Opal measures approximately 11mm x 7mm. Weighs 5.3 grams.

May 24, 2026

18K Yellow Gold Opal And Diamond Ring, Size 6.25

Est. $400-$600

$200

Hughes AuctionsSunland, CA

18K YELLOW GOLD 1.50CT DIAMOND AND BOULDER OPAL PENDANT: A vibrant Boulder Opal gives this luxury pendant an otherworldly quality. Sophisticated and incredibly captivating, Diamonds with a total weight of 1.50 carats add opulence to the overall design. Craf

4 days Left

18K YELLOW GOLD 1.50CT DIAMOND AND BOULDER OPAL PENDANT

Est. $2,000-$8,000

$2,000

Robinhood AuctionsLas Vegas, NV

Annette Ferdinandsen 18K Yellow Gold Boulder Opal Ring, Size 5.75: Annette Ferdinandsen 18K yellow gold ring featuring an Australian boulder opal. Marked 18K. Designer signed. Ring size 5.75. Opal measures approximately 20mm x 10mm. Total weight: 7.2 grams.

May 24, 2026

Annette Ferdinandsen 18K Yellow Gold Boulder Opal Ring, Size 5.75

Est. $500-$700

$250

Hughes AuctionsSunland, CA

Brooke Gregson 18K Yellow Gold Opal Ring With Twist Band, Size 6: Brooke Gregson 18K yellow gold ring featuring a teardrop-shaped opal with unique twisted band design. Designer signed. Ring size 6. Face measures 12mm x 21mm. Weighs 6.2 grams.

May 24, 2026

Brooke Gregson 18K Yellow Gold Opal Ring With Twist Band, Size 6

Est. $500-$700

$250

Hughes AuctionsSunland, CA

An 18k white gold ladies ring with an oval shaped opal colored stone: An 18k white gold ladies ring with an oval shaped opal colored stone. 20th century.

Jun 02, 2026

An 18k white gold ladies ring with an oval shaped opal colored stone

Est. €600-€800

€500

Ostantix AuctionsOostende, West-Vlaanderen

Cartier Vintage 1970s 18K Yellow Gold Fire Opal Necklace: Cartier Vintage 1970s 18K Yellow Gold Fire Opal Necklace Discover a stunning vintage piece with this Cartier 18K Yellow Gold Fire Opal Bezel Set Necklace from the 1970s. This exquisite necklace featur

4 days Left

Cartier Vintage 1970s 18K Yellow Gold Fire Opal Necklace

Est. $14,716-$19,130

$100

BidhausNew York, NY

Angela Cummings 18K Yellow Gold Fire Opal Black Jade Earrings 1986: Angela Cummings 18K Yellow Gold Fire Opal Black Jade Earrings 1986 These exquisite earrings by Angela Cummings feature a stunning combination of fire opal and black jade, set in luxurious 18K yellow g

3 days Left

Angela Cummings 18K Yellow Gold Fire Opal Black Jade Earrings 1986

Est. $10,647-$13,841

$100

BidhausNew York, NY

18K Yellow Gold 10.88ct Opal and 0.76ct Diamond Ring: Retail: $16,138.00 ****** 18K Yellow Gold 10.88ct Opal and 0.76ct Diamond Ring ****** Metal: 18K Yellow Gold / Total Item Weight: 11.5 Grams / Country Made: United States / / Main Stone: Opal / Color:

3 days Left

18K Yellow Gold 10.88ct Opal and 0.76ct Diamond Ring

Est. $14,587-$17,745

$50

Riverside GalleriesArcadia, CA

1940's 18K Rose Gold Cuff Bracelet with Opal Ruby Sapphire: 1940's 18K Rose Gold Cuff Bracelet with Opal Ruby Sapphire This exquisite 1940's bracelet is crafted from 18K rose gold and features a stunning combination of sapphire, ruby, and opal stones, set agai

5 days Left

1940's 18K Rose Gold Cuff Bracelet with Opal Ruby Sapphire

Est. $5,330-$6,929

$4,100

Mynt AuctionsNew York, NY

18K Yellow Gold Setting with 24.05ct Opal Ladies Pendant: Retail: $3,920.00 ****** 18K Yellow Gold Setting with 24.05ct Opal Ladies Pendant ****** Metal: 18K Yellow Gold / Total Item Weight: 13.51 Grams / Country Made: United States / / Main Stone: Opal / Co

2 days Left

18K Yellow Gold Setting with 24.05ct Opal Ladies Pendant

Est. $3,669-$4,302

$50

Riverside GalleriesArcadia, CA

18K and 14K White Gold Setting with 16.02ct Fire Opal and 1.07ct Diamond Pendant: Retail: $14,815.00 ****** 18K and 14K White Gold Setting with 16.02ct Fire Opal and 1.07ct Diamond Pendant ****** Size: 18 / Metal: 14k and 18k White Gold / Total Item Weight: 9.1 Grams / Country Made

3 days Left

18K and 14K White Gold Setting with 16.02ct Fire Opal and 1.07ct Diamond Pendant

Est. $12,589-$16,565

$50

Riverside GalleriesArcadia, CA

18K Yellow Gold 4.92 Ct Opal Diamond Bracelet 108 Stones: 18K Yellow Gold 4.92 Ct Opal Diamond Bracelet 108 Stones This exquisite 18K Yellow Gold bracelet features a stunning 4.92 Ct. Sugarloaf Opal, complemented by a total of 108 sparkling diamonds weighing

6 days Left

18K Yellow Gold 4.92 Ct Opal Diamond Bracelet 108 Stones

Est. $17,095-$22,223

$100

BidhausNew York, NY

18K Yellow Gold Setting with 6.62ct Opal and 0.40ct Diamond Ladies Ring: Retail: $9,070.00 ****** 18K Yellow Gold Setting with 6.62ct Opal and 0.40ct Diamond Ladies Ring ****** Size: 6.75 (we offer free resizing to winning bidders) / Metal: 18K Yellow Gold / Total Item Wei

2 days Left

18K Yellow Gold Setting with 6.62ct Opal and 0.40ct Diamond Ladies Ring

Est. $8,525-$9,345

$50

Riverside GalleriesArcadia, CA

18K White Gold Ladies Ring with 22.41ct Boulder Opal and 1.16ct tw Adjacent Diamonds: Retail: $15,000.00 ****** 18K White Gold Ladies Ring with 22.41ct Boulder Opal and 1.16ct tw Adjacent Diamonds ****** Size: 6.5 / Metal: 18K White Gold / Total Item Weight: 19.79 Grams / Country Made:

3 days Left

18K White Gold Ladies Ring with 22.41ct Boulder Opal and 1.16ct tw Adjacent Diamonds

Est. $13,250-$17,025

$50

Riverside GalleriesArcadia, CA

4 days Left

18K YELLOW GOLD OPAL NECKLACE

Est. $1,950-$2,860

$25

NY Elizabeth Beverly Hills, CA

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

May 20, 2026

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

Est. $12,454-$16,190

$100

BidhausNew York, NY

18K White Gold Ladies Ring with 22.41ct Boulder Opal and 1.16ct tw Adjacent Diamonds: Retail: $15,000.00 ****** 18K White Gold Ladies Ring with 22.41ct Boulder Opal and 1.16ct tw Adjacent Diamonds ****** Size: 6.5 / Metal: 18K White Gold / Total Item Weight: 19.79 Grams / Country Made:

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18K White Gold Ladies Ring with 22.41ct Boulder Opal and 1.16ct tw Adjacent Diamonds

Est. $13,250-$17,025

$50

Riverside GalleriesArcadia, CA

Vintage 18k Yellow Gold Opal Diamond Bombe Cocktail Ring 1.40ctw: Vintage 18k Yellow Gold Opal Diamond Bombe Cocktail Ring 1.40ctw This exquisite vintage bombe cocktail ring showcases a stunning combination of 18k yellow gold, opal, and diamonds, making it a perfect

4 days Left

Vintage 18k Yellow Gold Opal Diamond Bombe Cocktail Ring 1.40ctw

Est. $3,913-$5,086

$100

BidhausNew York, NY

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