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20 Carat Aquamarine

20 carat Aquamarine Diamonds 18K Gold Made in Italy Grounding Bold Cocktail Ring
20 carat Aquamarine Diamonds 18K Gold Made in Italy Grounding Bold Cocktail Ring

20 carat Aquamarine Diamonds 18K Gold Made in Italy Grounding Bold Cocktail Ring

By Beatrice Barzaghi Milano

Located in Milan, IT

20 carat Aquamarine Diamonds 18K Gold Made in Italy Grounding Bold Cocktail Ring.

Category

21st Century and Contemporary Italian Modern Cocktail Rings

Materials

Aquamarine, Diamond, Gold, 18k Gold, White Gold

20 Carat Aquamarine, Diamond, Sapphire, and 18K Rose Gold Ring, c. 1950
20 Carat Aquamarine, Diamond, Sapphire, and 18K Rose Gold Ring, c. 1950

20 Carat Aquamarine, Diamond, Sapphire, and 18K Rose Gold Ring, c. 1950

Located in New York, NY

A 20-carat round-cut aquamarine surrounded by brilliant-cut diamonds and sapphires, ornamented with twisted gold wire, all an 18-karat rose gold set ring.

Category

Vintage 1950s Unknown Cocktail Rings

Materials

Aquamarine, Diamond, Sapphire, 18k Gold, Rose Gold

20 Carat Princess Cut Aquamarine and Diamond Cocktail Ring
20 Carat Princess Cut Aquamarine and Diamond Cocktail Ring

20 Carat Princess Cut Aquamarine and Diamond Cocktail Ring

Located in Chicago, IL

14K White Gold 20.16 Carat Princess Cut Aquamarine and Diamond Cocktail Ring Crafted in 14K white gold, this bold and elegant cocktail ring features a breathtaking 20.16 carat natur...

Category

Vintage 1940s Italian Art Deco Cocktail Rings

Materials

Aquamarine, Diamond, White Diamond, 18k Gold

Vintage 20 Carat Emerald Cut Aquamarine and RBC Diamond Gold Retro Ring
Vintage 20 Carat Emerald Cut Aquamarine and RBC Diamond Gold Retro Ring

Vintage 20 Carat Emerald Cut Aquamarine and RBC Diamond Gold Retro Ring

Located in Montreal, QC

Simply Beautiful! Aquamarine and Diamond Gold Vintage Retro Ring. Centering a securely Hand set a Emerald Cut Aquamarine, weighing approx. 20 Carat.

Category

Mid-20th Century Retro Cocktail Rings

Materials

Aquamarine, Diamond, Gold, 18k Gold, White Gold

20 Carat Heart Cut Aquamarine Tennis Bracelet for Birthday Gift in 925 Silver
20 Carat Heart Cut Aquamarine Tennis Bracelet for Birthday Gift in 925 Silver

20 Carat Heart Cut Aquamarine Tennis Bracelet for Birthday Gift in 925 Silver

Located in New York, NY

20 Carat Heart Cut Aquamarine Bracelet in sterling silver showcases endlessly sparkling natural aquamarine, weighing 20 carat.

Category

21st Century and Contemporary American Modern Tennis Bracelets

Materials

Aquamarine, Silver, Sterling Silver

Exquisite 161.53 Carat Rose Quartz Necklace Set in 20 Karat Yellow Gold
Exquisite 161.53 Carat Rose Quartz Necklace Set in 20 Karat Yellow Gold

Exquisite 161.53 Carat Rose Quartz Necklace Set in 20 Karat Yellow Gold

By Coomi

Located in Secaucus, NJ

Rose Quartz Necklace with 161.53 Carat Rose Quartz, 81.39 Carat Aquamarine, and 4.28 Carat Diamonds.

Category

21st Century and Contemporary Thai Contemporary Chain Necklaces

Materials

Aquamarine, Diamond, Quartz, Yellow Gold

Labradorite Carving Bracelet with 2.41 Carat Diamonds and 20 Karat Yellow Gold
Labradorite Carving Bracelet with 2.41 Carat Diamonds and 20 Karat Yellow Gold

Labradorite Carving Bracelet with 2.41 Carat Diamonds and 20 Karat Yellow Gold

By Coomi

Located in Secaucus, NJ

Affinity Bracelet Set in 20 Karat Yellow Gold with 187.11-carat Labradorite Carving, 4.18-carat Aquamarine, 0.56-carat Pink Sapphire, and 0.55-carat Orange Sapphire.

Category

21st Century and Contemporary Thai Contemporary Link Bracelets

Materials

Aquamarine, Diamond, Labradorite, Sapphire, Pink Sapphire, Yellow Gold

Retro Natural Aquamarine Ring 14K
Retro Natural Aquamarine Ring 14K

Retro Natural Aquamarine Ring 14K

Located in New York, NY

A 20-carat natural aquamarine ring is a large, statement cocktail piece featuring a substantial, transparent, icy-blue beryl gemstone. * Cut: Often an emerald cut (step cut) to empha...

Category

Mid-20th Century Retro Cocktail Rings

Materials

14k Gold

Vintage 18K Gold 20ct Pale Aquamarine Emerald-Cut Cocktail Ring
Vintage 18K Gold 20ct Pale Aquamarine Emerald-Cut Cocktail Ring

Vintage 18K Gold 20ct Pale Aquamarine Emerald-Cut Cocktail Ring

Located in Miami, FL

A striking vintage statement ring starring an impressive approximately 20-carat pale aquamarine, precision cut in an elongated emerald silhouette.

Category

Vintage 1950s Cocktail Rings

Materials

Aquamarine, 18k Gold

Estate Platinum Diamond Briolette Aquamarine Fish On Hook Pendant Necklace 15”
Estate Platinum Diamond Briolette Aquamarine Fish On Hook Pendant Necklace 15”

Estate Platinum Diamond Briolette Aquamarine Fish On Hook Pendant Necklace 15”

Located in Winter Springs, FL

Details: • Metal: Platinum • Center Stone: Natural aquamarine, approximately 20 carats, briolette cut • Diamonds: Approximately 2.10 carats total weight • Diamond Color: F–G • D...

Category

Mid-20th Century Contemporary Pendant Necklaces

Materials

Aquamarine, Diamond, Platinum

Recent Sales

20 Carat Aquamarine  Diamond Shoulders Ring

20 Carat Aquamarine Diamond Shoulders Ring

Located in Stratford upon Avon, GB

Large aquamarine ring approximately 20cts with triangular diamond shoulders in yellow and white gold

Category

Mid-20th Century Retro Cocktail Rings

Materials

Aquamarine, Diamond, 18k Gold, Platinum

Retro 20 Carat Aquamarine and Diamond Ring
Retro 20 Carat Aquamarine and Diamond Ring

Retro 20 Carat Aquamarine and Diamond Ring

Located in Aliso Viejo, CA

The center estimated carat weigh mounted in apprx. 20 carats. The center stone is flanked by eight round diamonds that haave both transitional and modern cuts.

Category

Vintage 1950s British Retro Cocktail Rings

Materials

Aquamarine, Diamond, 18k Gold

Ico & the Bird Fine Jewelry 20 carat Aquamarine Diamond Gold Earrings
Ico & the Bird Fine Jewelry 20 carat Aquamarine Diamond Gold Earrings

Ico & the Bird Fine Jewelry 20 carat Aquamarine Diamond Gold Earrings

By Ico & the Bird Fine Jewelry

Located in Los Angeles, CA

This one of a kind piece features 20 carat of Sparkling Aquamarines and .018 carats of diamonds set in 18k yellow gold.

Category

2010s North American Artisan Drop Earrings

Materials

Aquamarine, Diamond, 18k Gold

20 Carat Bright Aquamarine and Diamond Cocktail Ring
20 Carat Bright Aquamarine and Diamond Cocktail Ring

20 Carat Bright Aquamarine and Diamond Cocktail Ring

Located in New York, NY

This original Ben Moses Jewelry Design ring is made with a remarkably bright 20 Carat Aquamarine center stone and 26 round-cut diamonds, totaling 2 carats, surrounding it.

Category

Vintage 1980s Unknown Contemporary Cocktail Rings

Materials

Aquamarine, Diamond, 14k Gold

Solitaire Aquamarine 20 Carat Cocktail Ring 18 Karat White Gold
Solitaire Aquamarine 20 Carat Cocktail Ring 18 Karat White Gold

Solitaire Aquamarine 20 Carat Cocktail Ring 18 Karat White Gold

Located in Geneva, CH

At its heart lies a mesmerizing 20-carat light blue emerald-cut aquamarine, capturing the essence of the ocean's depth and allure.

Category

21st Century and Contemporary French Art Deco Cocktail Rings

Materials

Aquamarine, White Gold

20 Carat Sri Lankan Blue Aquamarine Diamonds 18 Karat White Gold Cocktail Ring
20 Carat Sri Lankan Blue Aquamarine Diamonds 18 Karat White Gold Cocktail Ring

20 Carat Sri Lankan Blue Aquamarine Diamonds 18 Karat White Gold Cocktail Ring

By D and A Style

Located in Singapore, SG

Cocktail ring - about 20 carat aquamarine, white gold and diamonds. This ring is one of a kind.

Category

21st Century and Contemporary Armenian Modern Cocktail Rings

Materials

Diamond, Aquamarine, Gold, 14k Gold, 18k Gold, Rose Gold, White Gold, Ye...

Romantic 20 Carat Heart Shape Aquamarine and Diamond Ring
Romantic 20 Carat Heart Shape Aquamarine and Diamond Ring

Romantic 20 Carat Heart Shape Aquamarine and Diamond Ring

Located in Lambertville, NJ

Gleaming 14kt. yellow gold handmade aquamarine and diamond ring. The center is set with a fine color faceted natural aquamarine weighing approx 20.0cts. Each shoulder is bead set in ...

Category

Late 20th Century Cocktail Rings

Materials

Aquamarine, Diamond, 14k Gold

Kanjimull 20 ct Aquamarine, Pink Sapphires and Diamond Cocktail Ring
Kanjimull 20 ct Aquamarine, Pink Sapphires and Diamond Cocktail Ring

Kanjimull 20 ct Aquamarine, Pink Sapphires and Diamond Cocktail Ring

Located in New Delhi, DL

Handmade in our workshop by expert craftsmen. The 20 carat flawless aquamarine gem is flanked by 2 deep colored pink sapphires, with 3 round diamonds on each side of the band.

Category

21st Century and Contemporary Indian Contemporary Cocktail Rings

Materials

Aquamarine, Diamond, Pink Sapphire, 18k Gold

1-1/20 ct. Aquamarine and Diamond Accent Dangle Earrings in 14K Yellow Gold
1-1/20 ct. Aquamarine and Diamond Accent Dangle Earrings in 14K Yellow Gold

1-1/20 ct. Aquamarine and Diamond Accent Dangle Earrings in 14K Yellow Gold

By Affinity Designs LLC

Located in New York, NY

Crafted with exquisite detail, each of these earrings features a stunning oval aquamarine accompanied by sparkling round single cut white diamonds. The 14K yellow gold setting adds t...

Category

2010s Asian Contemporary Dangle Earrings

Materials

Aquamarine, Diamond, Yellow Gold

Aquamarine Dangle Earrings With Diamonds 23.80 Carats Silver
Aquamarine Dangle Earrings With Diamonds 23.80 Carats Silver

Aquamarine Dangle Earrings With Diamonds 23.80 Carats Silver

Located in Las Vegas, NV

Aquamarine = 20 Carats (Cut: Baguette , Color: Blue, Origin: Natural) Diamond = 3.80 Carats (Cut: Round, Color: F, Clarity: VS) Metal = Silver Dimensions: 67 x 30 mm

Category

21st Century and Contemporary Contemporary Dangle Earrings

Materials

Aquamarine, Diamond, White Diamond, Silver

Intini Jewels Gold Plate Chain Aquamarine Rondelles Handmade Bracelet
Intini Jewels Gold Plate Chain Aquamarine Rondelles Handmade Bracelet

Intini Jewels Gold Plate Chain Aquamarine Rondelles Handmade Bracelet

By Intini Jewels

Located in Milano, IT

• Gold Plate • Total length 20 cm • Aquamarine rondelles 11 carats • Total Weight 3.5 g  Please be aware as per terms and conditions all customs and duties expenses must be paid b...

Category

21st Century and Contemporary Italian Art Nouveau Chain Bracelets

Materials

Aquamarine, Gold, Yellow Gold, Gold Plate

Intini Jewels 9 Karat Yellow Gold Chain Aquamarine Rondelles Handmade Bracelet
Intini Jewels 9 Karat Yellow Gold Chain Aquamarine Rondelles Handmade Bracelet

Intini Jewels 9 Karat Yellow Gold Chain Aquamarine Rondelles Handmade Bracelet

By Intini Jewels

Located in Milano, IT

• 9 karat yellow gold 1.3 g • Total length 20 cm • Aquamarine rondelles 11 carats • Total Weight 3.5 g  Please be aware as per terms and conditions all customs and duties expenses...

Category

21st Century and Contemporary Italian Art Nouveau Chain Bracelets

Materials

Aquamarine, Gold, Yellow Gold, 9k Gold

Intini Jewels 18 Karat Yellow Gold Chain Aquamarine Rondelles Handmade Bracelet
Intini Jewels 18 Karat Yellow Gold Chain Aquamarine Rondelles Handmade Bracelet

Intini Jewels 18 Karat Yellow Gold Chain Aquamarine Rondelles Handmade Bracelet

By Intini Jewels

Located in Milano, IT

• 18 karat yellow gold 1.3 g • Total length 20 cm • Aquamarine rondelles 11 carats • Total Weight 3.5 g  Please be aware as per terms and conditions all customs and duties expense...

Category

21st Century and Contemporary Italian Art Nouveau Chain Bracelets

Materials

Aquamarine, Gold, 18k Gold, Yellow Gold

Intini Jewels Aquamarine Rondelle Gold Plate Earrings Necklace Bracelet Set
Intini Jewels Aquamarine Rondelle Gold Plate Earrings Necklace Bracelet Set

Intini Jewels Aquamarine Rondelle Gold Plate Earrings Necklace Bracelet Set

By Intini Jewels

Located in Milano, IT

Necklace • Gold Plate • Total length 40 cm • Aquamarine rondelles27.5 carats • Total Weight  8.2g  Bracelet • Gold Plate • Total length 20  cm • Aquamarine rondelles  11 carats • T...

Category

21st Century and Contemporary Italian Art Nouveau Chain Necklaces

Materials

Aquamarine, Gold, Yellow Gold, Gold Plate

18K Checkerboard Faceted 20ct Aquamarines and Diamonds One of a Kind Earrings
18K Checkerboard Faceted 20ct Aquamarines and Diamonds One of a Kind Earrings

18K Checkerboard Faceted 20ct Aquamarines and Diamonds One of a Kind Earrings

Located in Palm Beach, FL

This spectacular oval, checkerboard faceted 20 carats total weight, aquamarines are the focal point!

Category

2010s American Artisan Clip-on Earrings

Materials

Aquamarine, Diamond, 18k Gold

Intini Jewels Aquamarine Rondelle 9 Karat Gold Earrings Necklace Bracelet Set
Intini Jewels Aquamarine Rondelle 9 Karat Gold Earrings Necklace Bracelet Set

Intini Jewels Aquamarine Rondelle 9 Karat Gold Earrings Necklace Bracelet Set

By Intini Jewels

Located in Milano, IT

Necklace • 9 karat yellow gold 2.7 g • Total length 40 cm • Aquamarine rondelles27.5 carats • Total Weight  8.2g  Bracelet • 9 karat yellow gold 1.3 g • Total length 20  cm • Aquam...

Category

21st Century and Contemporary Italian Art Nouveau Chain Necklaces

Materials

Aquamarine, Gold, Yellow Gold, 9k Gold

Intini Jewels Aquamarine Rondelle 18 Karat Gold Earrings Necklace Bracelet Set
Intini Jewels Aquamarine Rondelle 18 Karat Gold Earrings Necklace Bracelet Set

Intini Jewels Aquamarine Rondelle 18 Karat Gold Earrings Necklace Bracelet Set

By Intini Jewels

Located in Milano, IT

Necklace • 18 karat yellow gold 2.7 g • Total length 40 cm • Aquamarine rondelles27.5 carats • Total Weight  8.2g  Bracelet • 18 karat yellow gold 1.3 g • Total length 20  cm • Aqu...

Category

21st Century and Contemporary Italian Art Nouveau Chain Necklaces

Materials

Aquamarine, Gold, 18k Gold, Yellow Gold

Julia Boss One of a Kind 18K Checkerboard Faceted 20CT Aquamarine & Diamond Ring
Julia Boss One of a Kind 18K Checkerboard Faceted 20CT Aquamarine & Diamond Ring

Julia Boss One of a Kind 18K Checkerboard Faceted 20CT Aquamarine & Diamond Ring

Located in Palm Beach, FL

We are thrilled to offer her pieces! This amazing 20 carat checkerboard faceted aquamarine the focal point of her signature design ring!

Category

21st Century and Contemporary American Artisan Cocktail Rings

Materials

Aquamarine, Diamond, 18k Gold

Retro 20 Carat Aquamarine Diamond Gold Ring
Retro 20 Carat Aquamarine Diamond Gold Ring

Retro 20 Carat Aquamarine Diamond Gold Ring

Located in Napoli, NA

The ring is set with a stunning 20 carat Aquamarine of perfect cut and great quality.

Category

Vintage 1940s Retro Cocktail Rings

Materials

Aquamarine, Diamond, 18k Gold, Gold

20 Carat Aquamarine Diamonds Two Color Gold Brooch
20 Carat Aquamarine Diamonds Two Color Gold Brooch

20 Carat Aquamarine Diamonds Two Color Gold Brooch

Located in Miami, FL

14k yellow and rose gold vintage brooch featuring a shield cut aquamarine weighing approximately 20cts accented by 4 round brilliant cut diamonds weighing approximately .30cts total,...

Category

21st Century and Contemporary American Brooches

Materials

Aquamarine, Diamond, White Diamond, 14k Gold

1960s GIA 20 carats Aquamarine Diamond Platinum Cocktail Ring
1960s GIA 20 carats Aquamarine Diamond Platinum Cocktail Ring

1960s GIA 20 carats Aquamarine Diamond Platinum Cocktail Ring

Located in Miami, FL

Aquamarine is reported to be approx. 20 carats. From Natural Beryl species in Octagonal Step cut transparent Greenish Blue color.

Category

Vintage 1960s Retro Cocktail Rings

Materials

Aquamarine, Diamond, Platinum

Art Nouveau Antique 20 Carat Aquamarine Diamond Gold Pendant
Art Nouveau Antique 20 Carat Aquamarine Diamond Gold Pendant

Art Nouveau Antique 20 Carat Aquamarine Diamond Gold Pendant

Located in Chicago, IL

Circa 1910s An antique 14K greenish-yellow pendant features a large oval natural aquamarine. The aquamarine is set in an openwork scrolling foliage motif frame embellished with old ...

Category

Early 20th Century Art Nouveau Drop Necklaces

Materials

Aquamarine

Art Deco 20 Carat Aquamarine and Diamond Dangle Earrings
Art Deco 20 Carat Aquamarine and Diamond Dangle Earrings

Art Deco 20 Carat Aquamarine and Diamond Dangle Earrings

Located in Beverly Hills, CA

Art Deco aquamarine and diamond dangle earrings showcasing 20 carats of vivid, clean aquamarine gemstones radiating a stunning blue hue.

Category

Early 20th Century Unknown Art Deco Dangle Earrings

Materials

Aquamarine, Diamond, White Diamond, Gold, 14k Gold, White Gold

Stambolian 20-Carat Aquamarine and Diamond Ring in 18 Karat Gold
Stambolian 20-Carat Aquamarine and Diamond Ring in 18 Karat Gold

Stambolian 20-Carat Aquamarine and Diamond Ring in 18 Karat Gold

By Stambolian

Located in Towson, MD

One 18 karat white gold (stamped 18K) ring by Stambolian, set with one 20. carat oval aquamarine measuring 21mm x 16mm, surrounded by a halo of one hundred fourteen round brilliant c...

Category

21st Century and Contemporary Modern Cocktail Rings

Materials

Aquamarine, Diamond, Gold, 18k Gold, White Gold, Yellow Gold

Art Deco Style 18 Karat Gold 20 Carat Aquamarine Diamond Cocktail Ring
Art Deco Style 18 Karat Gold 20 Carat Aquamarine Diamond Cocktail Ring

Art Deco Style 18 Karat Gold 20 Carat Aquamarine Diamond Cocktail Ring

Located in Vilnius, Vilniaus apskr.

This is a vintage Art Deco style rectangle cocktail ring made in 1990s. The piece is crafted in 18K white gold. It features amazing 20ct (19x15x9 mm) emerald cut aquamarine. The gem ...

Category

Late 20th Century Swedish Art Deco Cocktail Rings

Materials

Aquamarine, Diamond, 18k Gold, Gold

Aquamarine and Diamond Ring
Aquamarine and Diamond Ring

Aquamarine and Diamond Ring

Located in Carmel-by-the-Sea, CA

A beautiful 20 carat Aquamarine is highlighted by 34 diamonds totaling .50 carats.

Category

20th Century Fashion Rings

Materials

Aquamarine, 18k Gold

Rossella Ugolini 18k Yellow Gold Flower Aquamarine Handcrafted Necklaces
Rossella Ugolini 18k Yellow Gold Flower Aquamarine Handcrafted Necklaces

Rossella Ugolini 18k Yellow Gold Flower Aquamarine Handcrafted Necklaces

By Rossella Ugolini

Located in Rome, IT

One of a Kind Rossella Ugolini 18 Karat Yellow Gold 20 Carats Aquamarine Mandala Flower Handcrafted Necklaces Made in Italy.

Category

2010s Italian Romantic Beaded Necklaces

Materials

Aquamarine, Yellow Gold, Gold, 18k Gold

20.0 Carat Aquamarine and Diamond Ring
20.0 Carat Aquamarine and Diamond Ring

20.0 Carat Aquamarine and Diamond Ring

Located in Litchfield, CT

WEIGHT: 9.0 grams STONES: 20-carat aquamarine and .14 carats total weight of G color, VS clarity diamonds HALLMARKS: 14k STOCK NUMBER: Jewelry acquired from this dealer mus...

Category

Vintage 1950s American Cocktail Rings

Materials

Aquamarine, Diamond, 14k Gold, White Gold

Fabulous Aquamarine & Diamond White Gold Necklace
Fabulous Aquamarine & Diamond White Gold Necklace

Fabulous Aquamarine & Diamond White Gold Necklace

Located in Carmel-by-the-Sea, CA

Show Stopping Aquamarine & Diamond 18K White Gold Necklace featuring a dramatic 20 Carat Aquamarine Drop at the bottom of the necklace.

Category

21st Century and Contemporary Drop Necklaces

Materials

Aquamarine, Diamond, 18k Gold, White Gold

Sixties Opal, Diamond and Aquamarine Ring
Sixties Opal, Diamond and Aquamarine Ring

Sixties Opal, Diamond and Aquamarine Ring

Located in Litchfield, CT

WEIGHT: 11.5 grams STONES: 20 carat aquamarine, 0.16 carats total weight of H color, SI1 clarity diamonds, and opals.

Category

Vintage 1960s Fashion Rings

Materials

Aquamarine, Diamond, Opal, 14k Gold

20ct Aquamarine Diamond Ring Vintage Large Oval Cocktail Jewelry 18k White Gold
20ct Aquamarine Diamond Ring Vintage Large Oval Cocktail Jewelry 18k White Gold

20ct Aquamarine Diamond Ring Vintage Large Oval Cocktail Jewelry 18k White Gold

Located in Torrance, CA

Oval faceted aquamarine measures 24mm x 15mm (estimated at 20 carats).

Category

Mid-20th Century Unknown Modern Cocktail Rings

Materials

Aquamarine, Diamond, White Diamond, Gold, 18k Gold, White Gold

Aquamarine 20 carats and Diamond Ring
Aquamarine 20 carats and Diamond Ring

Aquamarine 20 carats and Diamond Ring

Located in Firenze, IT

PLEASE NOTE: OUR PRICE IS FULLY INCLUSIVE OF SHIPPING, IMPORTATION TAXES & DUTIES Claw-set with a step-cut aquamarine weighing 21.7 cts, within a brilliant-cut diamond shoulder, m...

Category

21st Century and Contemporary Italian Fashion Rings

Materials

Aquamarine, Diamond, Platinum

Retro Deep Blue 20 Carat Cushion Aquamarine Cocktail Ring
Retro Deep Blue 20 Carat Cushion Aquamarine Cocktail Ring

Retro Deep Blue 20 Carat Cushion Aquamarine Cocktail Ring

Located in Santa Barbara, CA

This cocktail ring features the most amazing aquamarine you've ever seen. The large, 20.75 carat gemstone portrays exemplary color found exclusively in Brazil's Santa Maria mines. Th...

Category

Vintage 1940s Retro Cocktail Rings

Materials

Aquamarine, Diamond, Platinum

Cocktail Ring in 18K Gold with a 20-Carat Natural Aquamarine.
Cocktail Ring in 18K Gold with a 20-Carat Natural Aquamarine.

Cocktail Ring in 18K Gold with a 20-Carat Natural Aquamarine.

Located in Nicosia, Cyprus

It is set with a beautiful emerald-cut aquamarine weighing approximately 20 carats (16 x 13 x 8 mm).

Category

20th Century Cocktail Rings

Materials

Aquamarine, Gold, 18k Gold, White Gold

20 Carat Emerald Cut Aquamarine & Diamond 14 Karat White Gold Cocktail Ring
20 Carat Emerald Cut Aquamarine & Diamond 14 Karat White Gold Cocktail Ring

20 Carat Emerald Cut Aquamarine & Diamond 14 Karat White Gold Cocktail Ring

Located in Boca Raton, FL

The emerald cut aquamarine weighs approximately 20 carats and the 6 round brilliant cut diamond accents weigh approximately .18 carat total weight.

Category

Late 20th Century American Modern Cocktail Rings

Materials

Aquamarine, Diamond, 14k Gold, White Gold

13.53 Carat Modernist Aquamarine Diamond and Gold Ring
13.53 Carat Modernist Aquamarine Diamond and Gold Ring

13.53 Carat Modernist Aquamarine Diamond and Gold Ring

Located in Litchfield, CT

This brilliantly chic fifties ring is set with a gorgeous 13.53 carat aquamarine framed by four brilliant white diamonds (.20 carats total weight, G-H color, SI1 clarity).

Category

Vintage 1950s American Fashion Rings

Materials

Aquamarine, Diamond, 14k Gold

33 Carat Total Aquamarine Sapphire Diamond Necklace 1970 in 18 Karat Yellow Gold
33 Carat Total Aquamarine Sapphire Diamond Necklace 1970 in 18 Karat Yellow Gold

33 Carat Total Aquamarine Sapphire Diamond Necklace 1970 in 18 Karat Yellow Gold

Located in London, GB

The gemological characteristics of the sapphires have been determined to be in line with those of sapphires of Burma (Myanmar) origin. Aquamarine: 20 Carat Sapphire: 8 Carat Diamond...

Category

Vintage 1970s British Retro Link Necklaces

Materials

Aquamarine, Diamond, Sapphire, Blue Sapphire, Gold, 18k Gold, Yellow Gold

1960s Aquamarine-Set Gold Ring
1960s Aquamarine-Set Gold Ring

1960s Aquamarine-Set Gold Ring

Located in Litchfield, CT

Everyday chic sixties style, this ring features a 20 carat bright blue aquamarine in a completely handmade cable twist setting.

Category

Vintage 1960s American Cocktail Rings

Materials

Aquamarine, 14k Gold, Yellow Gold

Aquamarine and Diamond Set Gold Earrings
Aquamarine and Diamond Set Gold Earrings

Aquamarine and Diamond Set Gold Earrings

Located in Litchfield, CT

Classically elegant, these 14k white gold earrings feature 2.25 carats of vibrant aquamarine, perfectly balanced with .20 carats of brilliant diamonds (I color, SI1 clarity).

Category

Vintage 1980s American Stud Earrings

Materials

Aquamarine, Diamond, 14k Gold

Vintage Rectangular Cut Natural Aquamarine White Gold Cocktail Ring
Vintage Rectangular Cut Natural Aquamarine White Gold Cocktail Ring

Vintage Rectangular Cut Natural Aquamarine White Gold Cocktail Ring

Located in London, GB

This beautiful ring is fully made in 18kt white gold and features an incredible 20 carat rectangular step cut aquamarine. It is held securely by four prongs on each corner.

Category

Vintage 1960s French Cocktail Rings

Materials

Aquamarine, 18k Gold, White Gold

Retro Forties Aquamarine-Set Gold Earrings
Retro Forties Aquamarine-Set Gold Earrings

Retro Forties Aquamarine-Set Gold Earrings

Located in Litchfield, CT

SIZE: 5/8ths of an inch high by 1/2 inch wide WEIGHT: 8.6 grams total STONES: 20 carats total weight of fine aquamarine HALLMARKS: 14k STOCK NUMBER: 23647 Jewelry ...

Category

Vintage 1940s American Clip-on Earrings

Materials

Aquamarine, Gold, 14k Gold

Aquamarine and Diamond Set Gold Ring
Aquamarine and Diamond Set Gold Ring

Aquamarine and Diamond Set Gold Ring

Located in Litchfield, CT

SIZE: Ring Size 7 WEIGHT: 8.0 grams STONES: 4.15 carat aquamarine and .20 carat total weight diamonds HALLMARKS: 18k and 750 for 18k STOCK NUMBER: 19903 Jewelry acqu...

Category

Vintage 1980s American Cocktail Rings

Materials

Aquamarine, White Diamond, 18k Gold, Yellow Gold

LB Exclusive 14K White Gold 1.40ct Diamond and Aquamarine Ring
LB Exclusive 14K White Gold 1.40ct Diamond and Aquamarine Ring

LB Exclusive 14K White Gold 1.40ct Diamond and Aquamarine Ring

By LB Exclusive

Located in Southampton, PA

This statement piece starts big with its remarkably bright 20-carat( approximately) aquamarine center stone on a cage setting.

Category

21st Century and Contemporary Cocktail Rings

Materials

Aquamarine, Diamond, 18k Gold, White Gold

LeVian 1ctw Aquamarine and Diamond Pendant, 14k Rose Gold, Length .5 Inches
LeVian 1ctw Aquamarine and Diamond Pendant, 14k Rose Gold, Length .5 Inches

LeVian 1ctw Aquamarine and Diamond Pendant, 14k Rose Gold, Length .5 Inches

By Suzy Levian

Located in McLeansville, NC

Stones: - diamonds, 21 stones - round brilliant cut - 1.2 mm - approximately .20 total carats -Brn, SI2-I1 - aquamarine, 1 stone - european cut - 6.5 x 5 mm - approximately ...

Category

21st Century and Contemporary Pendant Necklaces

Materials

Aquamarine, Diamond, 14k Gold, Rose Gold

Retro 20ct Aquamarine Ring Vintage 14k Rose Gold Cocktail Jewelry Sz 5
Retro 20ct Aquamarine Ring Vintage 14k Rose Gold Cocktail Jewelry Sz 5

Retro 20ct Aquamarine Ring Vintage 14k Rose Gold Cocktail Jewelry Sz 5

Located in Torrance, CA

Emerald cut aquamarine measures 20mm x 15mm (estimated at 20 carats).

Category

Mid-20th Century American Retro Cocktail Rings

Materials

Aquamarine, Gold, 14k Gold, Rose Gold

20 Carat Aquamarine, Diamond and 14K Gold Ring
20 Carat Aquamarine, Diamond and 14K Gold Ring

20 Carat Aquamarine, Diamond and 14K Gold Ring

Located in Hicksville, NY

This dazzling 1964 14K White Gold, Diamond and Aquamarine Ring features a 20 carat emerald cut Aquamarine held securely in place by 4 cut corner square prongs.

Category

Mid-20th Century Unknown Modern Cocktail Rings

Materials

Aquamarine, Diamond, 14k Gold, White Gold

Tiffany & Co. Retro 1940s 20 Carat Aquamarine gold cocktail Ring
Tiffany & Co. Retro 1940s 20 Carat Aquamarine gold cocktail Ring

Tiffany & Co. Retro 1940s 20 Carat Aquamarine gold cocktail Ring

By Tiffany & Co.

Located in Litchfield, CT

Circa 1940s, 14k, Tiffany & Co., New York City. Redolent with Retro style, this timeless American jewel features a dazzling 20.15 carat aquamarine. Large gemstone rings were the rag...

Category

Vintage 1940s American Retro Cocktail Rings

Materials

Aquamarine, 14k Gold

1940s 20 Carat Aquamarine and Diamond Ring, 14 Karat Gold
1940s 20 Carat Aquamarine and Diamond Ring, 14 Karat Gold

1940s 20 Carat Aquamarine and Diamond Ring, 14 Karat Gold

Located in Hicksville, NY

Ring Details: Metal type: 14 Karat white gold Weight: 13.26 grams Size: 6 (resizable) Aquamarine Details: Cut: Step Emerald Cut Color: Santa Maria Carat: 20 carats Type: Aquamarine...

Category

Vintage 1940s American Retro Cocktail Rings

Materials

Aquamarine, Diamond, Gold, 14k Gold

20ct Aquamarine Ring Vintage 14k Yellow Gold Cocktail Jewelry
20ct Aquamarine Ring Vintage 14k Yellow Gold Cocktail Jewelry

20ct Aquamarine Ring Vintage 14k Yellow Gold Cocktail Jewelry

Located in Torrance, CA

Emerald cut aquamarine measures 17.4mm x 14.4mm (estimated at 20 carats).

Category

Mid-20th Century Unknown Modern Cocktail Rings

Materials

Aquamarine, 14k Gold, Yellow Gold

20 Carat Natural Emerald Cut Aquamarine Cocktail Ring 14 Karat Gold, Estate
20 Carat Natural Emerald Cut Aquamarine Cocktail Ring 14 Karat Gold, Estate

20 Carat Natural Emerald Cut Aquamarine Cocktail Ring 14 Karat Gold, Estate

Located in New York, NY

20 Carat Natural Emerald Cut Aquamarine Cocktail Ring 14 Karat Gold, Estate Size of the ring 6.5 A classic, Cocktail ring Huge 20 Carat of very clean no inclusion Emerald cut Aqu...

Category

Early 2000s Cocktail Rings

Materials

Aquamarine, Diamond, Gold, 14k Gold

Art Deco Certified 20 Carat Santa Maria Aquamarine Diamond Sapphire Gold Ring
Art Deco Certified 20 Carat Santa Maria Aquamarine Diamond Sapphire Gold Ring

Art Deco Certified 20 Carat Santa Maria Aquamarine Diamond Sapphire Gold Ring

Located in Napoli, NA

Art Deco ring set in the center with a stunning Aquamarine, Santa Maria origin, weighing 19,50 carats graded AAAA, and surrounded by approx. 0.30 carat of custom cut Sapphires and 0....

Category

Mid-20th Century Art Deco Cocktail Rings

Materials

Aquamarine, Diamond, Sapphire, 18k Gold, Gold

20 Carat Heart Cut Aquamarine Tennis Bracelet for Birthday Gift in 925 Silver
20 Carat Heart Cut Aquamarine Tennis Bracelet for Birthday Gift in 925 Silver

20 Carat Heart Cut Aquamarine Tennis Bracelet for Birthday Gift in 925 Silver

Located in New York, NY

20 Carat Heart Cut Aquamarine Bracelet in sterling silver showcases endlessly sparkling natural aquamarine, weighing 20 carat.

Category

21st Century and Contemporary American Modern Tennis Bracelets

Materials

Aquamarine, Silver, Sterling Silver

Aquamarine Earrings With Opals and Diamonds 11.82 Carats Sterling Silver
Aquamarine Earrings With Opals and Diamonds 11.82 Carats Sterling Silver

Aquamarine Earrings With Opals and Diamonds 11.82 Carats Sterling Silver

Located in Bonita Springs, FL

It comes with the appraisal by GIA GG/AJP All Gemstones are Natural 20 Round Aquamarines = 8.60 Carats 2 Cabochon Opals = 1.60 Carats 234 Round Diamonds = 1.62 Carats Metal: Sterling...

Category

21st Century and Contemporary Contemporary Dangle Earrings

Materials

Aquamarine, Diamond, White Diamond, Opal, Silver, Sterling Silver

Verdura “Six Blades” Aquamarine and Diamond Ring
Verdura “Six Blades” Aquamarine and Diamond Ring

Verdura “Six Blades” Aquamarine and Diamond Ring

By Verdura

Located in Weston, MA

This ring is a “Blades” ring set with a cushion-cut aquamarine of approximately 20 carats held within the sculptural six-blade mounting, the blade-form shoulders pave-set with diamon...

Category

Late 20th Century Cocktail Rings

Materials

Aquamarine, Diamond, 18k Gold, Platinum

Modernist 1950s Aquamarine and Diamond-Set Platinum Ring
Modernist 1950s Aquamarine and Diamond-Set Platinum Ring

Modernist 1950s Aquamarine and Diamond-Set Platinum Ring

Located in Litchfield, CT

WEIGHT: 9.5 grams STONES: 7.10 carat aquamarine and .20 carats total weight of H color, SI1 clarity diamonds HALLMARKS: Pt900 for platinum, 7.10 for aquamarine weight and .20 fo...

Category

Vintage 1950s American Modernist Cocktail Rings

Materials

Aquamarine, Diamond, Platinum

H. Stern Aquamarine and Diamond-Set Gold Ring
H. Stern Aquamarine and Diamond-Set Gold Ring

H. Stern Aquamarine and Diamond-Set Gold Ring

By H. Stern

Located in Litchfield, CT

SIZE: 7 WEIGHT: 3.6 grams STONES: 2.0 carat aquamarine and .20 carats G color, and VS1 clarity diamonds HALLMARKS: 750 for 18k and S in a diamond cartouche for H.

Category

Vintage 1980s Brazilian Fashion Rings

Materials

Aquamarine, Diamond, Gold, 18k Gold, White Gold

Bochic “Capri” Aquamarine & Sapphire, Pearl Earrings Set In 18K Gold & Silver
Bochic “Capri” Aquamarine & Sapphire, Pearl Earrings Set In 18K Gold & Silver

Bochic “Capri” Aquamarine & Sapphire, Pearl Earrings Set In 18K Gold & Silver

By Bochic

Located in New York, NY

Bochic “Capri” Aquamarine & Sapphire, Pearl Earrings Set In 18K Gold & Silver Natural Aquamarine - 20 Carat Natural Multi Color Sapphire - 1 Carat South Sea White Pearls The ea...

Category

21st Century and Contemporary Thai Baroque Drop Earrings

Materials

Aquamarine, Pearl, Sapphire, 18k Gold, Gold Plate, Silver

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Located in New York, NY

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Located in Beverly Hills, CA

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By Gianmaria Buccellati

Located in New York, NY

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Located in New York, NY

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Located in New York, NY

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Located in New York, NY

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Located in New York, NY

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20 Carat Aquamarine For Sale on 1stDibs

Find the exact 20 carat aquamarine you’re shopping for in the variety available on 1stDibs. Frequently made of Gold, 18k Gold and Platinum, this item was constructed with great care. Our collection of these items for sale includes 363 vintage editions and 51 modern creations to choose from as well. Making the right choice when shopping for a 20 carat aquamarine may mean carefully reviewing examples of this item dating from different eras — you can find an early iteration of this piece from the 18th Century and a newer version made as recently as the 21st Century, both of which have proven very popular over the years. For this particular piece, 1 Carat and 1.5 Carat are consistently popular carat weights. Finding an appealing 20 carat aquamarine — no matter the origin — is easy, but Luigi Ferrara, Tiffany & Co. and H. Stern each produced a popular version that is worth a look. Today, if you’re looking for an emerald cut version of this piece and are unable to find the perfect match, our selection also includes oval cut and round cut alternatives. When shopping for a 20 carat aquamarine, you’ll find that there are less available pieces for unisex or men today than there are for women.

How Much is a 20 Carat Aquamarine?

The price for a 20 carat aquamarine starts at $296 and tops out at $105,000 with these rings, on average, selling for $4,952.

Why Gold Shines in Jewelry Craftsmanship

Gold is the feel-good metal, the serotonin of jewelry. Wear vintage and antique gold necklaces, watches, gold bracelets or gold rings and you feel happy, you feel dressed, you feel, well, yourself. 

Gold, especially yellow gold, with its rich patina and ancient pedigree going back thousands of years, is the steady standby, the well-mannered metal of choice. Any discussion of this lustrous metal comes down to a basic truth: Gold is elementary, my dear. Gold jewelry that couples the mystique of the metal with superb design and craftsmanship achieves the status of an enduring classic. Many luxury houses have given us some of our most treasured and lasting examples of gold jewelry over the years.

Since its founding, in 1837, Tiffany & Co. has built its reputation on its company jewelry as well as its coterie of boutique designers, which has included Jean Schlumberger, Donald Claflin, Angela Cummings and Elsa Peretti. There are numerous gold Tiffany classics worth citing. Some are accented with gemstones, but all stand out for their design and the workmanship displayed.

For the woman who prefers a minimalist look, the Tiffany & Co. twist bangle (thin, slightly ovoid) is stylishly simple. For Cummings devotees, signature pieces feature hard stone inlay, such as her pairs of gold ear clips inlaid with black jade (a play on the classic Chanel black and tan), or bangles whose design recalls ocean waves, with undulating lines of lapis lazuli and mother-of-pearl. And just about any design by the great Jean Schlumberger is by definition a classic.

Even had he eschewed stones and diamonds, Southern-born David Webb would be hailed for the vast arsenal of heavy gold jewelry he designed. Gold, usually hammered or textured in some manner, defines great David Webb jewelry. The self-taught jeweler made very au courant pieces while drawing inspiration from ancient and out-of-the-way sources — East meets West in the commanding gold necklaces made by Webb in the early 1970s. The same could be said for his endlessly varied gold cuffs.

In Europe, many houses have given us gold jewelry that sets the highest standard for excellence, pieces that were highly sought after when they were made and continue to be so. 

Numerous designs from Cartier are homages to gold. There are the classic Trinity rings, necklaces and bracelets — trifectas of yellow, white and rose gold. As a testament to the power of love, consider the endurance of the Cartier Love bracelet.

Aldo Cipullo, Cartier’s top in-house designer from the late 1960s into the early ’70s, made history in 1969 with the Love bracelet. Cipullo frequently said that the Love bracelet was born of a sleepless night contemplating a love affair gone wrong and his realization that “the only remnants he possessed of the romance were memories.” He distilled the urge to keep a loved one close into a slim 18-karat gold bangle. 

BVLGARI and its coin jewelry, gemme nummarie, hit the jackpot when the line launched in the 1960s. The line has been perennially popular. BVLGARI coin jewelry features ancient Greek and Roman coins embedded in striking gold mounts, usually hung on thick link necklaces of varying lengths. In the 1970s, BVLGARI introduced the Tubogas line, most often made in yellow gold. The Tubogas watches are classics, and then there is the Serpenti, the house's outstanding snake-themed watches and bracelets.

A collection called Monete that incorporated the gold coins is one of several iconic BVLGARI lines that debuted in the 1970s and ’80s, catering to a new generation of empowered women. Just as designers like Halston and Yves Saint Laurent were popularizing fuss-free ready-to-wear fashion for women on the go, BVLGARI offered jewels to be lived in

Since Van Cleef & Arpels opened its Place Vendôme doors in 1906, collection after collection of jewelry classics have enchanted the public. As predominantly expressed in a honeycomb of gold, there is the Ludo watch and accessories, circa the 1920s, and the golden Zip necklace, 1951, whose ingenious transformation of the traditional zipper was originally proposed by the Duchess of Windsor. Van Cleef's Alhambra, with its Moroccan motif, was introduced in 1968 and from the start its popularity pivoted on royalty and celebrity status. It remains one of VCA’s most popular and collected styles.

Mention must be made of Buccellati, whose name is synonymous with gold so finely spun that it suggests tapestry. The house’s many gold bracelets, typically embellished with a few or many diamonds, signified taste and distinction and are always in favor on the secondary market. Other important mid-20th-century houses known for their gold-themed jewelry include Hermès and Ilias Lalaounis.

Find a stunning collection of vintage and antique gold jewelry on 1stDibs.

The Legacy of Aquamarine in Jewelry Design

Perhaps the one gemstone that best embodies the glimmering blue of the ocean is aquamarine, not just in name but also in color. Aqua marina (Latin for water and sea), March’s birthstone, is often crystal clear and blue. Often affordable in price, vintage and antique aquamarine jewelry belongs in everyone’s jewelry box.

Aquamarine is a precious gemstone from the mineral beryl family. Its cousin is the emerald. Like other beryl varieties, aquamarines are rated 7.5 to 8 on the Mohs Hardness Scale. This means that they are soft enough for jewelers to cut to their client’s specs but also durable enough for daily wear.

On land or sea, aquamarines feature prominently in many folk tales, including one about mermaids gifting aquamarine to sailors to protect them during sea voyages. Worn around sailors’ necks as an amulet, it kept them from getting seasick and, most importantly, from shipwrecks. Considered a symbol of courage by some, aquamarine amulets were also favored by Egyptian and Hebrew warriors during battle.

Aquamarine has also made appearances on some of the grandest of great dames. The Brazilian government gifted Eleanor Roosevelt with a 1,847-carat aquamarine in 1935 and Queen Elizabeth II received a sizable aquamarine upon her 1953 coronation; this stone is now the focal point of her aquamarine tiara. And renowned Tiffany & Co. designer Jean Schlumberger made a diamond Bow setting for a 148.5-carat aquamarine, which was originally exhibited at the 1893 World’s Columbian Exhibition, now in the collection of the Field Museum of Natural History in Chicago.

On 1stDibs, find a range of vintage and antique aquamarine jewelry that includes unique aquamarine rings, necklaces and other accessories.

Questions About 20 Carat Aquamarine
  • 1stDibs ExpertApril 5, 2022
    The term “20 carat gold” does not have a meaning. “Carat” is a unit of measurement used to describe the size of gemstones. “Karat” is the unit used to describe gold precious metal. Gold stamped as 20 karat or 20K is 83.3 percent pure gold and 16.7 percent metal alloy. You'll find a wide variety of gemstone jewelry on 1stDibs.