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Black Onyx Ring
Located in Darnestown, MD
An oval black onyx stone is set in a 14 karat gold bezel in this stylish black ring. The ring is a
Category

Vintage 1980s Modern Dome Rings

Materials

Onyx, 14k Gold

Oval Black Onyx Nugget Yellow Gold Estate Men's Ring
Located in New York, NY
This classic estate men's ring features a large oval black onyx stone set in nugget-textured 14k
Category

Vintage 1970s American More Rings

Materials

Onyx, Yellow Gold

Oval Black Onyx Diamond Filigree Gold Flower Cocktail Ring
Located in Stamford, CT
Classic filigree 14k white gold ring with pink and yellow gold flowers and jet black Onyx with a
Category

Vintage 1930s Cocktail Rings

Materials

Diamond, Onyx, Yellow Gold, White Gold, Rose Gold, 14k Gold

Diamond and Black Onyx Oval Ring, 10K Yellow Gold, Ring Size 5.5
Located in McLeansville, NC
Crafted in 10K yellow gold, this ring features a stunning oval-shaped black onyx stone. The deep
Category

1990s Fashion Rings

Materials

Diamond, Onyx, 10k Gold, Yellow Gold

Diamond and Black Onyx Oval Ring, 10k Yellow Gold, Ring Size 5.5, Fancy Ring
Located in McLeansville, NC
Crafted in 10K yellow gold, this ring features a stunning oval-shaped black onyx stone. The deep
Category

Early 2000s Fashion Rings

Materials

Diamond, Onyx, 10k Gold, Yellow Gold

Goshwara Oval Onyx Cabochon And Diamond Ring
By Goshwara
Located in New York, NY
The Onyx Oval Cabochon Ring with Diamonds in 18k Yellow Gold is a striking piece of jewelry from
Category

21st Century and Contemporary Indian Contemporary Cocktail Rings

Materials

Diamond, Onyx, 18k Gold

Black Oval Onyx Cabochon Ring in 14k Yellow Gold
Located in Honolulu, HI
Ring Specifications: Metal: 14k Yellow Gold Total Weight: 11.8 Grams Onyx Measurements: 16.5 mm
Category

Late 20th Century Unknown Modern Cocktail Rings

Materials

Onyx, 14k Gold, Yellow Gold

18K Gold Oval Cabochon Black Onyx Diamond & Tsavorite Dual Halo Cocktail Ring
Located in Montclair, NJ
This beautiful statement ring is crafted in solid 18k white gold and features a large black onyx
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Onyx, Tsavorite, 18k Gold, White Gold

Black Onyx and Diamond Men's Ring 14 Karat Gold Satin Finish, Man's Oval Ring
By Five Star Jewelry
Located in Austin, TX
ring has a classic look that could be worn everyday. There is an oval black onyx with diamonds going
Category

21st Century and Contemporary Unknown Modern Dome Rings

Materials

Diamond, Onyx, 14k Gold, Yellow Gold

Yellow Gold Onyx & Diamond Bypass Ring - 14k Oval
Located in Greensboro, NC
Stone Information Natural Onyx Cut: Oval Color: Black Natural Diamond Cut: Round Brilliant Stone Note
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Onyx, 14k Gold, Yellow Gold

Modern Black Onyx Diamond Gold Ring
Located in Beverly Hills, CA
A quirky and fun cocktail ring featuring a 44.50 carat smooth and chic piece of black onyx. The
Category

20th Century American Cocktail Rings

Materials

Diamond, Black Diamond, Onyx, 18k Gold, Rose Gold

Emerald, Diamond and Black Onyx Ring
Located in Nantucket, MA
An oval, faceted emerald surrounded by round, brilliant cut diamonds and a ring of black onyx
Category

21st Century and Contemporary Solitaire Rings

Materials

Diamond, Emerald, Onyx, Sterling Silver

Vintage 18K Yellow Gold Large Oval Black Onyx Carved Intaglio Trojan Heavy Ring
By Vahe Naltchayan
Located in Montclair, NJ
--Stone(s):-- (1) Natural Genuine Black Onyx - Oval Cut w/ Carved Intaglio Cameo - Bezel Set
Category

21st Century and Contemporary American Cocktail Rings

Materials

Onyx, 18k Gold, Yellow Gold

Egyptian Revival Black Onyx Pharaoh Ring
Located in North Hollywood, CA
This Egyptian Revival Black Onyx Pharaoh Ring is set in tri-color gold with alot of detail. The
Category

Vintage 1960s Italian Egyptian Revival Cocktail Rings

Materials

Onyx, 14k Gold

Diamond Oval Ruby Black Onyx 14 Karat White Gold Cocktail Ring
Located in Boca Raton, FL
Beautiful diamond, ruby, and onyx cocktail ring handcrafted in 14 karat white gold. The center oval
Category

Late 20th Century American Modern Cocktail Rings

Materials

Diamond, Onyx, Ruby, White Gold

Oval Onyx Vintage Style Cocktail Ring in 9k Yellow Gold
Located in Bangkok, TH
, oval cut, onyx gem. Adorn yourself with this stylish black gemstone jewelry. Ring Information Style
Category

21st Century and Contemporary Thai Cocktail Rings

Materials

Onyx, 9k Gold, Yellow Gold

Oval Black Onyx and Diamond Ribbed Ring in 10k Gold, Leo Birthstone LV Band
By Five Star Jewelry
Located in Austin, TX
This ring could be perfect for your lover of sleek sophistication! The black onyx gemstone speaks
Category

21st Century and Contemporary American Regency Fashion Rings

Materials

Diamond, Onyx, White Gold, Yellow Gold, 10k Gold

14k Rose Gold Vintage Oval Black Onyx Bearded Cameo, Left Facing
Located in Southport, CT
14k rose gold ring. This striking vintage oval black onyx cameo ring has a handsome bearded profile
Category

Early 20th Century Unknown Victorian Fashion Rings

Materials

Onyx, 14k Gold, Rose Gold

Black Cabochon Oval Onyx Ring in 18 Karat Yellow Gold Bold Wide Design
Located in Scottsdale, AZ
Ring size: 5.25 Chic black onyx ring will make a great addition to your jewelry wardrobe. The
Category

Late 20th Century Unknown Contemporary Cocktail Rings

Materials

Onyx, Gold, 18k Gold, Yellow Gold

Mens Black Onyx Design Gold Ring 14K Yellow Gold
Located in Honolulu, HI
Mens Black Onyx Design Gold Ring 14K Yellow Gold ​ ​Beautiful ageless onyx ring with onyx design on
Category

21st Century and Contemporary Modern Cocktail Rings

Materials

Onyx, 14k Gold, Yellow Gold

10k Gold Vintage Signet Style Black Onyx Intaglio Ring
Located in Southport, CT
10k gold ring. This handsome vintage signet style class ring features a center, oval black onyx
Category

Mid-20th Century Unknown Retro Signet Rings

Materials

Onyx, 10k Gold

Certified 7.76 Aquamarine And Black Onyx Cocktail Ring Set I8K Black Gold
By Royaal Stones Ltd
Located in Bangkok, Thailand
complemented by a piece of hand carved black onyx around it to give it a contrasting look . Hand-fabricated in
Category

2010s Art Deco Cocktail Rings

Materials

Aquamarine, Onyx, Gold

Chushev Hercules Black Onyx Intaglio Sterling Silver Signet Ring
By Chushev
Located in Canoga Park, CA
This exquisite intaglio is masterfully engraved onto a black onyx gemstone. The gem is set in a
Category

2010s Classical Greek Signet Rings

Materials

Onyx, Sterling Silver

Vintage 1950s Black Onyx and Yellow Gold Signet Ring
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive vintage black onyx and 14 karat yellow gold Army Air Corps signet ring with a
Category

Vintage 1950s British Signet Rings

Materials

Onyx, 14k Gold, Yellow Gold

Certified 8.30 Carat Kunzite and Black Onyx Engagement Ring
By Royaal Stones Ltd
Located in Bangkok, Thailand
Beautifully crafted natural 8.30 carat Kunzite and Black Onyx ring, set in 18K Rose Gold.The
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Kunzite, Onyx, 18k Gold, Rose Gold

Black Onyx Horseshoe Horse Head Ring 14k Yellow Gold
Located in Sugar Land, TX
♥ Product Summary ♥ Stone: Onyx Band Material: 14k Yellow Gold (stamped) Weight: 9 grams
Category

21st Century and Contemporary American Signet Rings

Materials

Onyx, 14k Gold, Yellow Gold

Modernist Black Onyx Diamond Ring 14 Karat
Located in Wallkill, NY
Another stunning Modernist 14k Gold Ring. Featuring an Oval Onyx Stone with small diamond accents
Category

Vintage 1960s Modernist Fashion Rings

Materials

Diamond, Onyx, 14k Gold, Yellow Gold

14k Yellow Gold Black Onyx Men's Ring
Located in Portland, OR
* Design Concept--- This ring features a cabochon genuine AA black onyx. The design is simplistic
Category

21st Century and Contemporary American Artist Fashion Rings

Materials

Onyx, Gold, 14k Gold, Yellow Gold

David Yurman Black Onyx Signet Men's Ring in 18 Karat Gold
By David Yurman
Located in New York, NY
-Material: 18k Yellow Gold -Ring size: 9 -Black Onyx: 11x14mm -Ring weight: 18.3gr -Ring width: 4.8
Category

21st Century and Contemporary More Rings

Materials

Onyx, Gold, 18k Gold

David Yurman Black Onyx Signet Men's Ring in 18 Karat Gold
By David Yurman
Located in New York, NY
-Material: 18k Yellow Gold -Ring size: 7 3/4 -Black Onyx: 11x14mm -Ring weight: 18.3gr -Ring width
Category

21st Century and Contemporary More Rings

Materials

Onyx, Gold, 18k Gold

Oval Onyx Intaglio Cocktail Ring with Diamond Accents in 18 Karat Yellow Gold
Located in Scottsdale, AZ
Metal: 18K Yellow Gold Weight: 18.63 grams Natural Onyx count: 1 Onyx cut: Oval Tablet Onyx color: Black
Category

20th Century Unknown Contemporary Cocktail Rings

Materials

Onyx, Diamond, Yellow Gold, 18k Gold, Gold

Black Onyx Diamond Enamel Yellow Gold Ring Estate
Located in Miami, FL
Gracefully crafted from 18 karat yellow gold, this oval black onyx estate ring emanates opulence
Category

Vintage 1960s Cocktail Rings

Materials

Diamond, Onyx, Gold, 18k Gold, Yellow Gold, Enamel

Gucci Estate Black Onyx Ring Size 6.75 Sterling Silver 6 mm
By Gucci
Located in Brooklyn, NY
Authentic Gucci Estate Black Onyx Ring Size 6.75 Sterling Silver 6 mm G22 This elegant Authentic
Category

1990s American Dome Rings

Materials

Onyx, Sterling Silver

Unisex 14k Solid Yellow Gold Black Onyx Promise Everyday Ring
By VR Jewels
Located in Houston, TX
Unisex Black Onyx Promise Ring in 14K Gold featuring natural onyx of 0.3 carats. The gorgeous
Category

21st Century and Contemporary American Art Deco Solitaire Rings

Materials

Onyx, Gold, 14k Gold, Yellow Gold

Charles Krypell Onyx & Diamond Halo Ring Sterling 925 Yellow Gold 18k Oval.35ctw
By Charles Krypell
Located in Greensboro, NC
: Oval Checkerboard Cabochon & Round Color: Black Natural Diamonds Carat(s): .35ctw Cut: Round Brilliant
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, Onyx, 18k Gold, Yellow Gold, Sterling Silver

Art Deco 900 Platinum 0.84 Carat Diamond Onyx Oval Cocktail Ring
Located in Vilnius, LT
, VS-SI) - 1 onyx (oval cut, faceted, black) Weight: 5.16g Size: 16.75 (US 6.25) IMPORTANT: please
Category

Early 20th Century Art Deco Cocktail Rings

Materials

Diamond, Onyx, Platinum

Yellow Gold Jadeite & Onyx Cluster Cocktail Ring 14k Oval Cabochon Rope Sz 6 3/4
Located in Greensboro, NC
Enhanced Cut: Oval Cabochon Colors: Orange, Green, White, Pale Purple, & Pale Yellow Genuine Onyx Cut
Category

21st Century and Contemporary Cocktail Rings

Materials

Onyx, 14k Gold, Yellow Gold

Lucea New York Amethyst, Black Onyx & Diamond Ring
By Lucea New York
Located in New York, NY
Palm beach Collection This beautiful and alluring cocktail ring features an oval Amethyst, Black
Category

2010s Hong Kong Contemporary Cocktail Rings

Materials

Amethyst, Diamond, Onyx, Gold, 18k Gold, White Gold

Vintage Men's Black Onyx Ring in 14k Yellow Gold
Located in Honolulu, HI
available for a fee) Total Weight: 10.3 Grams Gemstone Specifications: Center Gemstone: Onyx Shape: Oval
Category

21st Century and Contemporary Cocktail Rings

Materials

Onyx, Gold, 14k Gold, Yellow Gold

Striking Gold and Onyx Statement Ring
Located in Palm Beach, FL
, black onyx oval measuring 1 3/16 inches by 1 1/16 inches. The stylish ring shoulders embrace the onyx
Category

21st Century and Contemporary American Cocktail Rings

Materials

Onyx, Gold, 18k Gold

Pasquale Bruni 'Ghirlanda' Onyx, Black Spinel and Diamond 18K White Gold Ring
By Pasquale Bruni
Located in London, GB
is masterfully handcrafted from 18 carat white gold. Taking center-stage is an impressive oval onyx
Category

21st Century and Contemporary Italian Modern Fashion Rings

Materials

Black Spinel, Spinel, Onyx, Diamond, White Gold, 18k Gold, Gold

10 Karat Yellow Gold Black Onyx and Diamond Ring
Located in Wallkill, NY
This beautiful ring contains a center oval black onyx that contains a white gold plaque in a
Category

Vintage 1950s American Fashion Rings

Materials

Diamond, Onyx, 10k Gold, White Gold, Yellow Gold

Tiffany & Co. Elsa Peretti Oval Cut Onyx Cabochon 18 Karat Yellow Gold Ring
By Elsa Peretti for Tiffany & Co.
Located in Houston, TX
A beautiful and unique ring from Elsa Peretti for Tiffany & Co., this ring features an oval cut
Category

1990s Hong Kong Fashion Rings

Materials

Onyx, Gold, 18k Gold, Yellow Gold

Black Onyx and Diamond Dome Yellow Gold Ring, circa 1970s
Located in Beverly Hills, CA
One black onyx and diamond dome 14K yellow gold ring with a tiered / raised design centering one
Category

20th Century Dome Rings

Materials

Diamond, Onyx, Gold, 14k Gold, Yellow Gold

Band Ring in Sterling Silver and Enamel with Black Onyx
By Cristina Cipolli Jewellery
Located in London, Richmond
Gemstone: black onyx cabochon (oval 8x6mm) Ring Dimensions: 10 mm wide, 2 mm thick Silver Weight: 8 grams
Category

21st Century and Contemporary British Contemporary Band Rings

Materials

Onyx, Enamel, Sterling Silver

Set in 18K Gold, Art deco style, Morganite, Black Onyx & Diamonds Cocktail Ring
By JEWEL HUB
Located in Hong Kong, HK
A very beautiful and gorgeous, art deco style, Morganite & Black Onyx Cocktail Ring set in 18K Rose
Category

21st Century and Contemporary Indian Art Deco Cocktail Rings

Materials

Diamond, Morganite, Onyx, 18k Gold

0.59 cts Clear Zambian Emerald, Black onyx & Diamond Cluster Ring in 18k Gold
By GEM PLAZA
Located in Jaipur, Rajasthan
This is an elegant emerald, Black & diamond ring studded in 18k gold with 1 piece of Oval Cut
Category

21st Century and Contemporary Indian Contemporary Cluster Rings

Materials

Diamond, Emerald, Onyx, 18k Gold, White Gold

Vintage Rare Van Cleef & Arpels Onyx & Diamond 18k Gold Oval Cabochon Dome Ring
By Van Cleef & Arpels
Located in Birmingham, GB
Very Rare Vintage Van Cleef & Arpels Onyx And Diamond 18 Karat Gold Dome Ring. A stunning vintage
Category

20th Century French Dome Rings

Materials

White Diamond, Diamond, Onyx, White Gold, Yellow Gold, 18k Gold, Gold

Lagos 18 Karat Gold Vintage Pink Tourmaline Ring with Diamonds and Black Onyx
By Lagos
Located in New York, NY
20 round brilliant diamonds surrounding the center tourmaline, and a ring of black onyx surrounding
Category

Vintage 1980s American Contemporary Cocktail Rings

Materials

Onyx, Tourmaline, Diamond, Gold, 18k Gold, Yellow Gold

14 Karat Gold Black Onyx and Pink Opal Round Beads Rubies Black Diamonds Ring
By Tutti Frutti Jewellery
Located in Bangkok, TH
Unique and elegant Art Deco Style ring composed of a flat oval ring in solid 14 Kt yellow gold
Category

2010s Thai Art Deco Cocktail Rings

Materials

Black Diamond, Onyx, Opal, Ruby, 14k Gold, Yellow Gold

14K Yellow Gold Onyx Ring Size 6.25 #16163
Located in Washington Depot, CT
Vintage 14K Yellow Gold Onyx Ring Size 6.25 This gorgeous 14K gold ring features a beautiful oval
Category

20th Century Engagement Rings

Materials

Onyx, Gold, 14k Gold, Yellow Gold

Onyx Ring In yellow Gold
Located in Bloomington, MN
Onyx Ring In yellow Gold This sophisticated men's gemstone fashion ring is skillfully crafted in
Category

Late 20th Century Modern Fashion Rings

Materials

Onyx, 14k Gold, Yellow Gold

Yellow Gold Onyx Men's Ring - 10k Solitaire Brushed
Located in Greensboro, NC
Gold Stone Information Natural Onyx Color: Black Size: 15.6mm x 11.6mm Style: Solitaire Features
Category

21st Century and Contemporary Solitaire Rings

Materials

Onyx, 10k Gold, Yellow Gold

Yellow Gold Onyx Vintage Cocktail Solitaire Ring - 10k
Located in Greensboro, NC
Yellow Gold Stone Information Natural Onyx Color: Black Style: Cocktail Solitaire Measurements Face
Category

21st Century and Contemporary Solitaire Rings

Materials

Onyx, 10k Gold, Yellow Gold

Ella Gafter Onyx Ruby Diamond Cocktail Ring
By Ella Gafter
Located in New York, NY
This ruby and diamond cocktail ring features a faceted oval-cut ruby (2.20 carats) in a design set
Category

21st Century and Contemporary Italian Artist Cocktail Rings

Materials

Diamond, Ruby, Onyx, White Diamond, 18k Gold, White Gold

Yellow Gold Onyx Men's Ring - 14K Solitaire Brushed
Located in Greensboro, NC
: Smooth & brushed finishes Stone Information Natural Onyx Color: Black Measurements Face Height (north
Category

21st Century and Contemporary Solitaire Rings

Materials

Onyx, 14k Gold, Yellow Gold

Asch Grossbardt Black Onyx, Coral, Diamond and Mother of Pearl Ring
By Asch Grossbardt
Located in Darnestown, MD
Wonderful Modernist design ring by Asch Grossbardt. Inset in the black onyx ground are coral
Category

Late 20th Century American Modernist Dome Rings

Materials

Pearl, Onyx, Diamond, Coral, 18k Gold

18 Karat White Gold 1.70 Carat Diamond and Black Onyx Engagement Ring
By Gems Paradise
Located in Jaipur, IN
18 Karat White Gold 1.70 Carat Diamond and Black Onyx Engagement Ring Radiance originates from the
Category

2010s Indian Contemporary Engagement Rings

Materials

Onyx, Diamond, White Gold, 18k Gold

Dramatic Large and Impressive Circa 1930 Black Onyx Diamond Yellow Gold Ring
Located in Wheaton, IL
ring boasts an impressive size of 1 1/2" length x 1" at its widest part. It features an oval black onyx
Category

Vintage 1930s Cocktail Rings

Materials

Diamond, Onyx, 14k Gold, Yellow Gold

Pierre Cardin Paris 1970 By Dinh Van Geometric Oval Ring In 14Kt Gold And Onyx
By Jean Dinh Van for Pierre Cardin
Located in Miami, FL
way. Onyx: Mounted in a bezel, with 1 round flat disk of 10 mm, carved from natural black onyx of
Category

Vintage 1970s French Modern Cocktail Rings

Materials

Onyx, Yellow Gold, 14k Gold, Gold

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Black Onyx Rings Oval For Sale on 1stDibs

Surely you’ll find the exact black onyx rings oval you’re seeking on 1stDibs — we’ve got a vast assortment for sale. Every item for sale was constructed with extraordinary care, often using Gold, Yellow Gold and 14k Gold. In our selection of items, you can find a vintage example as well as a contemporary version. If you’re looking for a black onyx rings oval from a specific time period, our collection is diverse and broad-ranging, and you’ll find at least one that dates back to the 19th Century while another version may have been produced as recently as the 21st Century. A black onyx rings oval from David Yurman, Andreoli and BOON — each of whom created a beautiful version of this treasured accessory — is worth considering. Today, if you’re looking for an oval cut version of this piece and are unable to find the perfect match, our selection also includes cabochon alternatives. If you’re browsing our inventory for a black onyx rings oval, you’ll find that many are available today for women, but there are still pieces to choose from for unisex and men.

How Much is a Black Onyx Rings Oval?

The price for a black onyx rings oval starts at $175 and tops out at $13,500 with these rings, on average, selling for $1,150.

Finding the Right rings for You

Antique and vintage rings have long held a special place in the hearts of fine jewelry lovers all over the world.

No matter their origin or specific characteristics, rings are timeless, versatile accessories. They’ve carried deep meaning since at least the Middle Ages, when diamond rings symbolized strength and other kinds of rings were worn to signify romantic feelings or to denote an affiliation with a religious order. Rings have also forever been emblematic of eternity.

Over time, rings have frequently taken the form of serpents, which have long been associated with eternal life, health and renewal. Italian luxury jewelry house Bulgari has become famous for its widely loved Serpenti motif, for example, and its Serpenti ring, like the other accessories in the collection, began as an homage to jewelry of the Roman and Hellenistic eras. The serpent is now a popular motif in fine jewelry. Jewelry devotees have long pined for rings adorned with reptiles, thanks to antique Victorian rings — well, specifically, Queen Victoria’s illustrious engagement ring, which took the form of a gold snake set with rubies, diamonds and an emerald (her birthstone). Designs for Victorian-era engagement rings often featured repoussé work and chasing, in which patterns are hammered into the metal.

Engagement rings, which are reliably intimidating to shop for, are still widely recognized as symbols of love and commitment. On 1stDibs, a range of buying guides can be found for those in the market for antique engagement ringsvintage engagement rings or Art Deco engagement rings

The most collectible antique engagement rings and vintage engagement rings are those from the Victorian, Edwardian and Art Deco eras. Named for the monarchies of the four King Georges, who in succession ruled England starting in 1714 (plus King William’s reign), antique Georgian rings, be they engagement rings or otherwise, are also coveted by collectors. Pearls, along with colored gemstones like garnets, rubies and sapphires, were widely used in Georgian jewelry. The late-1700s paste jewelry was a predecessor to what we now call fashion or costume jewelry

The Art Nouveau movement (1880–1910) brought with it rings inspired by the natural world. Antique Art Nouveau rings might feature depictions of winged insects and fauna as well as women, who were simultaneously eroticized and romanticized, frequently with long flowing hair. Art Deco jewelry, on the other hand, which originated during the 1920s and ’30s, is by and large “white jewelry.” White metals, primarily platinum, were favored over yellow gold in the design of antique Art Deco rings and other accessories as well as geometric motifs, with women drawn to the era’s dazzling cocktail rings in particular.

Whether you’re hunting down a chunky classic for a Prohibition-themed cocktail party or seeking a clean contemporary design to complement your casual ensemble, find an exquisite collection of antique, new and vintage rings on 1stDibs.

Questions About Black Onyx Rings Oval
  • 1stDibs ExpertOctober 12, 2021
    The material of the ring setting is a driving factor in what a black onyx ring is worth. An onyx ring with a sterling silver ring setting can be purchased at under $30 as well. Black onyx is a semi-precious gemstone, with prices ranging from $1 to $500 per carat. Find a collection of vintage and designer black onyx rings on 1stDibs today.
  • A black onyx ring is a ring set with an onyx gemstone. Onyx is a semi-precious gemstone that typically comes in the color black.