Results for “opal 18k”

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18K WHITE AND YELLOW GOLD 2.0CT DIAMOND AND OPAL COCKTAIL RING: Theatrical yet grounded in tradition, this cocktail ring combines drama and color with archival quality. At its center rests a 9ct oval black opal, its dark ground ignited by flashes of green, blue, a

3 days Left

18K WHITE AND YELLOW GOLD 2.0CT DIAMOND AND OPAL COCKTAIL RING

Est.

US$3,600

-

US$14,400

US$3,500

Las Vegas, NV

Robinhood Auctions

4.7

(878)

DESIGNER 18K WHITE GOLD NATURAL AUSTRALIAN FIRE OPAL & BLUE SAPPHIRE HALO RING: DESIGNER 18K WHITE GOLD NATURAL AUSTRALIAN FIRE OPAL & BLUE SAPPHIRE HALO RING Designer 18k White Gold Natural Australian Fire Opal & Blue Sapphire Halo Ring Ring Size: 8.25 - Can Be Resized Metal: 18

5 days Left

DESIGNER 18K WHITE GOLD NATURAL AUSTRALIAN FIRE OPAL & BLUE SAPPHIRE HALO RING

Est.

US$2,881

-

US$3,220

US$2,350

Valley Village, CA

Modern Jewelry

4.5

(218)

18K Yellow Gold 2.0ct Diamond and Pink Opal Necklace: This necklace is crafted in 18K yellow gold and features a single strand of pink opal beads measuring approximately 10.5mm to 16mm, alternating with lustrous white pearls and set with round diamond ro

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18K Yellow Gold 2.0ct Diamond and Pink Opal Necklace

US$5,000

Broomall, PA

Eastern European Art Gallery Inc

4.3

(4)

Beautiful Natural Opal 3.86 CT Ring With Natural Diamond and 18k Gold: Title: Beautiful Natural Opal 3.86 CT Ring With Natural Diamond and 18k Gold Description: Beautiful Natural Fire Opal Ring With Diamonds and 18k Gold. 3.86 CTS. Natural Fire Opal

Beautiful Natural Opal 3.86 CT Ring With Natural Diamond and 18k Gold

Est. —

£425

Dunstable

William George

4.2

(15)

18K WHITE GOLD 0.65CT DIAMOND AND OPAL HALO RING: A luminous estate cocktail ring centering a substantial pear-shaped opal cabochon weighing approximately 5.00 carats, displaying a bright white-to-cream body with a delicate play-of-color that shimmer

3 days Left

18K WHITE GOLD 0.65CT DIAMOND AND OPAL HALO RING

Est.

US$1,600

-

US$6,400

US$1,600

Las Vegas, NV

Robinhood Auctions

4.7

(878)

18K White Gold Opal Diamond Pendant Necklace 16 Inch Cable Link: 18K White Gold Opal Diamond Pendant Necklace 16 Inch Cable Link This exquisite pendant features a stunning natural opal with an oval cabochon cut, prong set in solid 18K white gold, showcasing a beaut

5 days Left

18K White Gold Opal Diamond Pendant Necklace 16 Inch Cable Link

Est.

US$4,182

-

US$5,019

US$1,900

New York, NY

Diamond Depot

4.3

(16)

DESIGNER SATIN FINISH 18K YELLOW GOLD NATURAL AUSTRALIAN FIRE OPAL MODERN RING: DESIGNER SATIN FINISH 18K YELLOW GOLD NATURAL AUSTRALIAN FIRE OPAL MODERN RING Designer Satin Finish 18k Yellow Gold Natural Australian Fire Opal Modern Ring Ring Size: 5.5 - Can be Resized Weight is

5 days Left

DESIGNER SATIN FINISH 18K YELLOW GOLD NATURAL AUSTRALIAN FIRE OPAL MODERN RING

Est.

US$5,091

-

US$5,690

US$4,150

Valley Village, CA

Modern Jewelry

4.5

(218)

Vintage 18k Yellow Gold Horse Brooch Pendant with Fire Opal and Diamonds: Vintage 18k Yellow Gold Horse Brooch Pendant with Fire Opal and Diamonds Vintage estate horse motif pendant brooch crafted in solid 18k yellow gold. This original convertible piece features a natural

5 days Left

Vintage 18k Yellow Gold Horse Brooch Pendant with Fire Opal and Diamonds

Est.

US$3,341

-

US$4,343

US$2,550

New York, NY

Bidhaus

4.3

(878)

Beautiful Natural Fire Opal 2.16 CT Ring With Natural Diamond and 18k Gold: Title: Beautiful Natural Fire Opal 2.16 CT Ring With Natural Diamond and 18k Gold Description: Beautiful Natural Fire Opal Ring With Diamonds and 18k Gold. 2.16 CTS. Natural Fire Opal

Beautiful Natural Fire Opal 2.16 CT Ring With Natural Diamond and 18k Gold

Est. —

£375

Dunstable

William George

4.2

(15)

Antique Victorian 18k Gold Opal Diamond Dome Ring 1.02ct: Antique Victorian 18k Gold Opal Diamond Dome Ring 1.02ct This stunning Antique Victorian ring showcases a large natural opal at its center, featuring an oval cabochon cut with a beautiful play of oran

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Antique Victorian 18k Gold Opal Diamond Dome Ring 1.02ct

Est.

US$6,591

-

US$7,910

US$3,000

New York, NY

Diamond Depot

4.3

(16)

18K WHITE GOLD 0.65CT DIAMOND AND OPAL HALO RING: A luminous estate cocktail ring centering a substantial pear-shaped opal cabochon weighing approximately 5.00 carats, displaying a bright white-to-cream body with a delicate play-of-color that shimmer

Sep 11, 2026

18K WHITE GOLD 0.65CT DIAMOND AND OPAL HALO RING

Est.

US$1,600

-

US$6,400

US$1,600

Las Vegas, NV

Robinhood Auctions

4.7

(878)

Platinum and 18K Yellow Gold Setting with 0.80ct Opal and 0.19ct Diamond Ladies Ring: Retail: $5,130.00 ****** Platinum and 18K Yellow Gold Setting with 0.80ct Opal and 0.19ct Diamond Ladies Ring ****** Size: 5.5(we offer free resizing to winning bidders) / Metal: Platinum and 18K Yell

3 days Left

Platinum and 18K Yellow Gold Setting with 0.80ct Opal and 0.19ct Diamond Ladies Ring

Est.

US$4,771

-

US$5,369

US$50

Arcadia, CA

Riverside Galleries

4.6

(222)

Platinum and 18K Yellow Gold Setting with 0.80ct Opal and 0.19ct Diamond Ladies Ring: Retail: $5,130.00 ****** Platinum and 18K Yellow Gold Setting with 0.80ct Opal and 0.19ct Diamond Ladies Ring ****** Size: 5.5(we offer free resizing to winning bidders) / Metal: Platinum and 18K Yell

6 days Left

Platinum and 18K Yellow Gold Setting with 0.80ct Opal and 0.19ct Diamond Ladies Ring

Est.

US$4,771

-

US$5,369

US$50

Arcadia, CA

Riverside Galleries

4.6

(222)

18k Yellow Gold Opal Diamond Textured Bead Bypass Ring: 18k Yellow Gold Opal Diamond Textured Bead Bypass Ring This exquisite bypass statement ring features a stunning design crafted in solid 18k yellow gold. The ring showcases two natural genuine opals, e

Sep 10, 2026

18k Yellow Gold Opal Diamond Textured Bead Bypass Ring

Est.

US$8,190

-

US$9,828

US$3,700

New York, NY

Diamond Depot

4.3

(16)

VINTAGE 22K / 18K YELLOW GOLD PENDANT, NATURAL OPAL, DIAMONDS ( 12.7 GRAMS ): VINTAGE 22K/18K YELLOW GOLD OPAL DIAMOND PENDANT Vintage 22k/18k Yellow Gold Opal Diamond Pendant You are bidding on a pre-owned Vintage 22k/18k Yellow Gold Opal Diamond Pendant. The pendant has marks

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VINTAGE 22K / 18K YELLOW GOLD PENDANT, NATURAL OPAL, DIAMONDS ( 12.7 GRAMS )

US$3,909

Valley Village, CA

Modern Jewelry

4.5

(218)

18k White Gold Opal Diamond Halo Pendant: 18k White Gold Opal Diamond Halo Pendant This elegant pendant features a large natural opal in an elongated oval cabochon cut, prong set in solid 18k white gold. The opal displays a white base color w

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18k White Gold Opal Diamond Halo Pendant

Est.

US$8,190

-

US$9,828

US$3,000

New York, NY

Diamond Depot

4.3

(16)

Cabochon Black Opal Diamond Knot Cocktail Ring in Platinum and 18k Gold: Cabochon Black Opal Diamond Knot Cocktail Ring in Platinum and 18k Gold Pre-owned women's cocktail ring featuring a natural genuine oval cabochon black opal accented by natural genuine diamonds in an

5 days Left

Cabochon Black Opal Diamond Knot Cocktail Ring in Platinum and 18k Gold

Est.

US$3,876

-

US$4,651

US$1,750

New York, NY

Diamond Depot

4.3

(16)

DIAMOND GOLD EARRINGS MEXICAN OPAL 2.70CT 18K WHITE POST CLIP: DIAMOND GOLD EARRINGS MEXICAN OPAL 2.70CT 18K WHITE POST CLIP These adorable huggie earrings are crafted from 18k white gold featuring a small triangle shape with a stunning trillion cut Mexican orang

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DIAMOND GOLD EARRINGS MEXICAN OPAL 2.70CT 18K WHITE POST CLIP

US$7,910

Valley Village, CA

Modern Jewelry

4.5

(218)

18K White Gold 0.65ct Diamond and Opal Halo Ring: A luminous estate cocktail ring centering a substantial pear-shaped opal cabochon weighing approximately 5.00 carats, displaying a bright white-to-cream body with a delicate play-of-color that shimmer

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18K White Gold 0.65ct Diamond and Opal Halo Ring

US$2,400

Broomall, PA

Eastern European Art Gallery Inc

4.3

(4)

18K YELLOW GOLD 8.0CT EGYPTIAN OPAL RING: A luminous 8.0 carat Egyptian Opal adds warmth, color, and style to the center of this exquisite luxury ring. Crafted from 18K Yellow Gold, intricate metalwork makes it a captivating piece that will c

Sep 11, 2026

18K YELLOW GOLD 8.0CT EGYPTIAN OPAL RING

Est.

US$1,700

-

US$6,800

US$1,700

Las Vegas, NV

Robinhood Auctions

4.7

(878)

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

4 days Left

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

Est.

US$11,169

-

US$13,402

US$4,000

New York, NY

Diamond Depot

4.3

(16)

DESIGNER TAJ 18K YELLOW GOLD 3.19TCW AUSTRALIAN FIRE OPAL & DIAMOND PIN BROOCH: DESIGNER TAJ 18K YELLOW GOLD 3.19TCW AUSTRALIAN FIRE OPAL & DIAMOND PIN BROOCH Designer TAJ 18k Yellow Gold 3.19tcw Australian Fire Opal & Diamond Pin Brooch Size: 1 5/8" Tall By 1 1/8" Wide Metal: 18

5 days Left

DESIGNER TAJ 18K YELLOW GOLD 3.19TCW AUSTRALIAN FIRE OPAL & DIAMOND PIN BROOCH

Est.

US$5,091

-

US$5,690

US$4,150

Valley Village, CA

Modern Jewelry

4.5

(218)

18K White Gold Necklace by Schreiner with Pearls Diamonds Opals Emeralds 42 In: 18K White Gold Necklace by Schreiner with Pearls Diamonds Opals Emeralds 42 In Pre-owned SCHREINER necklace crafted in 18K white gold and set with South Sea pearls, diamonds, opals, and emeralds. The

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18K White Gold Necklace by Schreiner with Pearls Diamonds Opals Emeralds 42 In

US$72,870

New York, NY

Diamond Depot

4.3

(16)

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

5 days Left

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

Est.

US$3,391

-

US$3,790

US$2,750

Valley Village, CA

Modern Jewelry

4.5

(218)

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