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Antique black onyx brooch with micromosaic flower, 1900s
Located in New York, NY
Antique black onyx brooch with micromosaic flower Made in Pietra Dura technique Counrty – Italy
Category

Early 20th Century French Art Nouveau Brooches

Vintage Victorian Estate Cameo Black Onyx Brooch & Earrings Set
Located in New York, NY
smooth matte feeling of the cameo sculpture hand-carved on a black onyx is the antique/vintage 1930s
Category

Vintage 1930s Brooches

Materials

Onyx, Gold, 18k Gold

Signed "Putti" Platinum Black Onyx Brooch or Pendant, circa 1920
Located in Palm Desert, CA
Signed "Putti" platinum Black Onyx, carved with figures of a man and a woman, Brooch / Pendant
Category

Early 20th Century Art Deco Brooches

Materials

Diamond, Onyx, Platinum

Art Deco 0.5 Carat Old European Cut Diamond with Black Onyx Brooch Pin
Located in Addison, TX
utilizes black onyx for an extremely cool geometric design of custom cut onyx bars. Item Details: Metal
Category

Early 20th Century Art Deco Brooches

Materials

Diamond, Onyx, Platinum

1930s Art Deco Diamond Black Onyx Gold Brooch
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive antique Art Deco style black onyx brooch in 15 karat yellow gold, platinum
Category

Vintage 1930s Unknown Brooches

Materials

Diamond, Onyx, White Diamond, 15k Gold, Yellow Gold, Platinum, Gold

1930s Art Deco Diamond Black Onyx Gold Brooch
1930s Art Deco Diamond Black Onyx Gold Brooch
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H 0.3 in W 0.85 in L 1.68 in
Art Deco Platinum Gold Diamond 0.30 Carat Black Onyx 2.1 Inch Brooch
Located in New York, NY
The Art Deco Platinum Gold Diamond and Black Onyx Brooch is a piece of jewelry that is designed in the
Category

Early 20th Century German Art Deco Brooches

Materials

Diamond, Onyx, Gold, 14k Gold, Rose Gold, Platinum

Vintage 1970s Onyx, Diamond and 14k Yellow Gold Pendant/Brooch
Located in Jesmond, Newcastle Upon Tyne
mark 585 and the maker's mark (EE). This stunning vintage black onyx brooch in gold is supplied with
Category

Vintage 1970s Unknown Art Deco Brooches

Materials

Diamond, Onyx, Yellow Gold

Vintage 1970s Onyx, Diamond and 14k Yellow Gold Pendant/Brooch
Vintage 1970s Onyx, Diamond and 14k Yellow Gold Pendant/Brooch
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H 0.14 in W 1.57 in L 1.71 in
Black Onyx Yellow Gold Bow Brooch
Located in Los Angeles, CA
Black onyx and yellow gold bow brooch circa 1970. SPECIFICATIONS: GEMSTONE: carved black onyx
Category

Vintage 1970s Contemporary Brooches

Materials

Onyx, 14k Gold, Yellow Gold

14KY Black Onyx and Diamond Crab Brooch/Pendant
Located in Cincinnati, OH
black onyx shell. 5 round diamonds adorn each claw. Approximately .01ct each. Hinged pin with safety
Category

21st Century and Contemporary Unknown Brooches

Materials

Diamond, Onyx, 14k Gold

Antique 18K Gold Black Enamel and Onyx Brooch
Located in Rotterdam, NL
This antique 18 karat gold and enamel round brooch is created with black onyx and set with a seed
Category

Antique Late 19th Century European Late Victorian Brooches

Materials

Onyx, 18k Gold, Enamel

Antique 18K Gold Black Enamel and Onyx Brooch
Antique 18K Gold Black Enamel and Onyx Brooch
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W 1.07 in L 1.07 in
Rock Crystal Black Onyx Diamond Brooch 18 KT
Located in Napoli, IT
Rock Crystal Black Onyx and Diamond brooches were very popular during the Art Deco period and had a
Category

Mid-20th Century European Retro Brooches

Materials

Diamond, Onyx, Rock Crystal, 18k Gold

Rock Crystal Black Onyx Diamond Brooch 18 KT
Rock Crystal Black Onyx Diamond Brooch 18 KT
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H 1.23 in W 1.5 in
Art Deco Malachite Bar Diamond Black Onyx Pin Brooch
Located in New York, NY
Art Deco Malachite Bar Diamond Black Onyx Pin Brooch Old miner cut diamonds of approximately 7
Category

Early 20th Century Art Deco Brooches

Materials

Diamond, Malachite, Onyx, White Gold

Georgian Memorial Onyx Hair Brooch
Located in Wheaton, IL
of shiny black onyx and delicate hair creates a unique and striking appearance, with twelve round
Category

Antique Early 19th Century Georgian Brooches

Materials

Onyx, 18k Gold, Yellow Gold

Georgian Memorial Onyx Hair Brooch
Georgian Memorial Onyx Hair Brooch
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H 0.875 in W 1 in
1950s Sterling Silver Black Onyx and Quartz Glass Sword Brooch
Located in Lexington, KY
This sterling silver brooch brings together an epic combination of carved rose quartz and onyx to
Category

Vintage 1950s Modernist Brooches

Materials

Onyx, Quartz, Sterling Silver

Sigi Pineda Mexican Sterling Silver Black Onyx Modernist Pin Brooch Mexico
Located in New York, NY
This is a very fine mid-century modern Black Onyx Sterling Silver brooch by Sigi Pineda of Mexico
Category

20th Century Mexican Modernist Brooches

Materials

Onyx, Sterling Silver

Stenzhorn 18KT WG, Black Onyx, 10.30Ct.Pink Sapphire & Diamond Butterfly Brooch
Located in New York, NY
Butterfly wings in pink sapphire pavé graduating in color are edged with black onyx; set in 18
Category

Early 2000s German Contemporary Brooches

Materials

Diamond, Onyx, Pink Sapphire, 18k Gold, White Gold

Art Deco Onyx and Diamond Brooch
Located in New York, NY
An Art Deco Diamond, Onyx and Enamel Brooch, France The oval-shaped brooch set throughout with old
Category

Vintage 1920s French Art Deco Brooches

Materials

Onyx, Diamond, Platinum

Stylish Brooch White & Black Diamonds Ruby Sapphires Onyx Carnelian Micromosaic
By Sicis Jewels
Located in London, GB
Micro Mosaic artists tiny handwoven Venetian enamel rods obtained from the high temperature melting of nine base colors with diamond dust, realizing endless combinations of tones and...
Category

21st Century and Contemporary Italian Contemporary Brooches

Materials

White Diamond, Onyx, Ruby, Sapphire, Carnelian, Black Diamond, 18k Gold,...

Antique Diamond Pearl and Black Onyx Yellow Gold Brooch, circa 1890
Located in Jesmond, Newcastle Upon Tyne
black onyx, which features a sloped chamfered edge that extends to the border of the antique brooch
Category

Antique 1890s Unknown Victorian Brooches

Materials

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

Sabbadini 18KT Yellow Gold Ladybug Brooch, 6.02Ct. Yellow Sapphires & Black Onyx
By Sabbadini
Located in New York, NY
wings art artfully set with square cut yellow sapphires and black onyx stones. The body is hi polished
Category

1990s Italian Modern Brooches

Materials

Onyx, Yellow Sapphire, 18k Gold, Yellow Gold

Victorian Onyx and Seed Pearl Buckle Brooch
Located in New York, NY
Timeless Victorian Onyx 14 kt Gold and Seed Pearl Buckle Brooch from the late 19th Century. 2.75" x
Category

Antique 1880s American Victorian Brooches

Materials

Onyx, Pearl, Gilt Metal, 14k Gold

Victorian Onyx and Seed Pearl Buckle Brooch
Victorian Onyx and Seed Pearl Buckle Brooch
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W 0.5 in L 2.75 in
1920s Greenleaf & Crosby Onyx Diamond Platinum Brooch
Located in New Orleans, LA
Seventy-one sparkling white diamonds and faceted black onyx make an elegant statement in this Art
Category

Vintage 1920s Unknown Art Deco Brooches

Materials

Diamond, Onyx, Platinum

Cartier Panther Panthere Emerald Black Onyx Tie Lapel Yellow Gold Pin Brooch
By Cartier
Located in Holland, PA
18k Yellow Gold Emerald Black Onyx nose Panther Panthere Tie Lapel Pin Brooch by Cartier. With 2 x
Category

1990s French Brooches

Materials

Emerald, Onyx, Yellow Gold

Vintage Goering Silver Onyx Marcasite Watch Brooch
Located in Mount Kisco, NY
Decorated with sparkling marcasite and emerald-cut black onyx accents, this elegant 1940's watch
Category

Vintage 1940s Swiss Victorian Brooches

Materials

Marcasite, Onyx, Silver

La Triomphe 14K Gold Inlaid Malachite Black Onyx & Diamond Brooch Pin Pendant
By La Triomphe
Located in Montclair, NJ
--Stone(s):-- (1) Natural Genuine Black Onyx - Custom Cut - Inlaid Set - Black Color (1) Natural
Category

21st Century and Contemporary Brooches

Materials

Diamond, Malachite, Onyx, 14k Gold

Antique Victorian 14k Gold Bezel Black Onyx & Mourning Hair Octagonal Pin Brooch
Located in Montclair, NJ
glass window. It is further framed by a large black onyx stone that is neatly bezel set, adding a truly
Category

Antique 1890s Victorian Brooches

Materials

Onyx, 14k Gold, Yellow Gold

Art Deco Diamond and Onyx Brooch Pendant
Located in New York, NY
, total weight of remaining stones approximately 11 cts) and black onyx.
Category

Vintage 1920s Art Deco Brooches

Materials

Diamond, Onyx, White Gold

Tiffany & Co. Onyx Pristine Gold Brooch Pendant
By Tiffany & Co.
Located in Stamford, CT
Tiffany & Co 18k yellow gold black Onyx white Pristine brooch pin pendant. Secure pristine and
Category

Late 20th Century Brooches

Materials

Onyx, Gold, 18k Gold, Yellow Gold

Antique Black Onyx Enamel and Seed Pearl 20 Karat Yellow Gold Mourning Brooch
Located in Jesmond, Newcastle Upon Tyne
An exceptional, fine and impressive Victorian black onyx, enamel and seed pearl, 20 karat yellow
Category

Antique 1880s Unknown Brooches

Materials

Onyx, Pearl, Yellow Gold, Enamel

Kai Yin Lo Onyx and Gemstone Brooch/Pendant
Located in New York, NY
Attractive deco inspired brooch by Kai Yin Lo in gilt sterling with onyx, garnet and citrine. She
Category

Vintage 1980s American Brooches

Materials

Onyx, Citrine, Garnet, Gold Plate

Erte' "A" from the Alphabet Collection Black Onyx & Diamond 14K Gold Brooch
By Erté
Located in Henderson, NV
Amazing Erte' black onyx and diamond brooch, featuring the letter "A" composed of two ballet
Category

Late 20th Century American Art Deco Brooches

Materials

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

Large Scale Gold and Onyx Modernist Brooch
Located in Palm Beach, FL
and black onyx. Measures 3 inches by 2 5/8 inches. Marked 585 (for 14k gold. Can be worn as a brooch
Category

Mid-20th Century Unknown Modernist Brooches

Materials

Onyx, 14k Gold, Gold

Large Scale Gold and Onyx Modernist Brooch
Large Scale Gold and Onyx Modernist Brooch
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W 2.63 in D 0.25 in L 3 in
Stenzhorn 18kt Gold, Blue Sapphire and Diamond Butterfly Brooch with Black Onyx
Located in New York, NY
Butterfly wings in blue sapphire pavé graduating in color are edged with black onyx; set in 18
Category

Early 2000s German Contemporary Brooches

Materials

Diamond, Onyx, Blue Sapphire, 18k Gold, White Gold

Vintage 18k TT Gold Black Onyx & Diamond Florentine Teardrop Brooch Pin Pendant
Located in Montclair, NJ
teardrop designs showing a beautiful Florentine finish which are adorned with black onyx stones neatly set
Category

Vintage 1970s Retro Brooches

Materials

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

Vintage 18k White Gold Polished Black Onyx .30ctw Diamonds Ribbon Bow Pin Brooch
Located in Montclair, NJ
design that is adorned with custom cut polished black onyx and accented with round brilliant cut diamonds
Category

21st Century and Contemporary Brooches

Materials

Diamond, Onyx, White Gold

Diamond Onyx Emerald Gold Ladybug Pendant Brooch
Located in Beverly Hills, CA
A fun, stylish, and unique piece designed into a lucky Ladybug! Its two wings are made with black
Category

21st Century and Contemporary American Brooches

Materials

Diamond, Emerald, Onyx, Gold, 18k Gold

Van Cleef & Arpels Onyx 18k Gold Dog Brooch
By Van Cleef & Arpels
Located in New York, NY
charming and whimsical. The eyes are made of black onyx, which provides a striking contrast against the
Category

Late 20th Century Brooches

Materials

Onyx, 18k Gold

Van Cleef & Arpels Onyx 18k Gold Dog Brooch
Van Cleef & Arpels Onyx 18k Gold Dog Brooch
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W 0.63 in L 0.75 in
Kai-Yin Lo, KYLO Mabe Pearl, Black Onyx & Pearl Abstract Brooch
By Kai-Yin Lo
Located in New York, NY
pearl is surrounded along the sides and bottom with carved and shaped mother of pearl and black onyx
Category

1990s Chinese Brooches

Materials

Gold Plate, Sterling Silver

Art Deco Diamond, Coral, Black Onyx And Platinum Brooch, Circa 1935, 1.02 Carats
Located in London, GB
A French Art Deco diamond, coral, black onyx and platinum brooch, with an open, circular centre
Category

Vintage 1930s French Art Deco Brooches

Materials

Coral, Diamond, Onyx, Platinum

Antique 6.29 Carat Diamond and Onyx Platinum Brooch
Located in Jesmond, Newcastle Upon Tyne
A stunning antique Art Deco 6.29 carat diamond and black onyx, platinum brooch; part of our diverse
Category

Vintage 1930s Unknown Brooches

Materials

Onyx, Diamond, Platinum

Antique 6.29 Carat Diamond and Onyx Platinum Brooch
Antique 6.29 Carat Diamond and Onyx Platinum Brooch
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H 0.16 in W 0.96 in L 2.01 in
Estate Ruby, Diamond, and Black Onyx in Yellow Gold Large Fish Brooch / Pin
Located in Miami, FL
Round Rubies 1 Cabochon Ruby ​​​​​​​ 2 Black Onyx Diamond Color: G
Category

21st Century and Contemporary Brooches

Materials

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

Antique 18k Gold Amethyst & Diamond Carved Camphor Glass Black Onyx Pin Brooch
Located in Montclair, NJ
carved and frosted camphor glass sitting on top of the black onyx stone. Authentic antique piece with
Category

Antique 1890s Victorian Brooches

Materials

Amethyst, Diamond, Onyx, 14k Gold, 18k Gold, Rose Gold, Yellow Gold

French Art Deco Parrot Bird Brooch Pin Rock Crystal Sterling Silver Black Onyx
Located in New York, NY
perch, two parrots in Sterling Silver with paste and Black Onyx adornment. The brooch is signed with
Category

Early 20th Century French Art Deco Brooches

Materials

Onyx, Rock Crystal, Silver, Sterling Silver

Vintage 14k Gold 0.60ctw Pave Diamond Pink Topaz & Black Onyx Large Brooch Pin
Located in Montclair, NJ
cut, polished, black onyx stones that are perfectly bezel set around the design and boldly frame this
Category

Vintage 1950s Brooches

Materials

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

Vintage 14k Gold Black Onyx Bar Pin Brooch Accented w/ 0.42ctw Diamond 2 Arrows
Located in Montclair, NJ
cut black onyx stone. The black onyx stone is accented with very fine quality diamonds that are pave
Category

21st Century and Contemporary Brooches

Materials

Diamond, Onyx, 14k Gold

Brooch Ruby, Onyx and diamond 18k yellow gold
Located in The Hague, ZH
18 kt yellow gold brooch set with ruby ​​tot. 0.80ct, onyx and single cut diamond to. 0.90 ct - F/G
Category

2010s Dutch Modern Brooches

Materials

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

Brooch Ruby, Onyx and diamond 18k yellow gold
Brooch Ruby, Onyx and diamond 18k yellow gold
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W 1.62 in L 0.48 in
Antique Fleur-de-Lis Diamond and Onyx Brooch
Located in Rotterdam, NL
Virgin Mary and the Holy Trinity. This antique gold and silver round brooch is made of black onyx and
Category

Antique Late 19th Century European Late Victorian Brooches

Materials

Diamond, Onyx, 14k Gold, Silver

Chanel Diamond Onyx Flower Brooches, set of two
By Chanel
Located in New York, NY
comprises two brooches adorned with round brilliant-cut white diamonds and hand-carved black onyx cabochons
Category

20th Century French Brooches

Materials

Diamond, Onyx, 18k Gold, White Gold

Diamond Onyx Multicolor Gemstone Gold Toucan Pendant Brooch
Located in Beverly Hills, CA
, and lovely reddish tourmalines which weigh a total of 5.54 carats. Black onyx is used for the toucan’s
Category

21st Century and Contemporary American Brooches

Materials

Diamond, Onyx, Gold, 18k Gold

Diamond Onyx Gold & Platinum Sea-Turtle Pendant Brooch
Located in Beverly Hills, CA
polished black onyx which is webbed with stands of 18k yellow gold making the shell's pattern. Adding to
Category

21st Century and Contemporary North American Brooches

Materials

Diamond, Onyx, Gold, 18k Gold, Platinum

Black Onyx Diamond Bow Brooch Mounted in 9 Carat White Gold Dated circa 1930s
Located in London, GB
Black Onyx Bow Brooch Mounted in 9ct White Gold dated circa 1930's Set with old cut diamonds in
Category

Vintage 1930s British Art Deco Brooches

Materials

Onyx, Diamond, 9k Gold

Vintage 14k Gold 1.14ctw Diamond Carved Black Onyx Fluer De Lis Bar Pin Brooch
Located in Montclair, NJ
polished, genuine black onyx stone that has been masterfully carved into with lovely and beveled fleur-de
Category

Vintage 1930s Retro Brooches

Materials

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

Mexican Inlaid Lapis Malachite and Onyx Sterling Silver Brooch
Located in Miami Beach, FL
Black onyx, malachite and lapis inlaid into an oval sterling silver brooch. The raised inlaid
Category

Vintage 1970s Mexican Brooches

Materials

Lapis Lazuli, Malachite, Onyx, Sterling Silver

Akoya Pearl Diamond Onyx 18k Yellow Gold Wreath Brooch
Located in Beverly Hills, CA
carved piece of black onyx which adds contrast to the brooch. Made in 18k yellow gold and ready to be
Category

21st Century and Contemporary American Brooches

Materials

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

Antique Onyx and Rose Cut Diamond Gold Pin Brooch
Located in Rotterdam, NL
An antique Victorian rose cut diamond and onyx oval pin brooch. The onyx gradually slopes towards
Category

Antique Late 19th Century European Victorian Brooches

Materials

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

Cartier Art Deco Platinum Seed Pearl Diamond Onyx Tassel Brooch
By Cartier
Located in New York, NY
( 1.5mm), approximately 1.00ctw G/Vs diamonds, black onyx and enamel. Brooch measures 3.75" in length and
Category

Vintage 1920s French Art Deco Brooches

Materials

Diamond, Onyx, Pearl, Platinum

Art Deco Diamond and Onyx Stylised Floral Brooch Circa 1925
Located in London, GB
An Art Deco monochrome stylised floral brooch, circa 1925. The brooch is designed with a floral
Category

Early 20th Century English Brooches

Materials

White Diamond, Onyx, Platinum

Van Cleef & Arpels Onyx 18k Gold Dog with Newspaper Brooch
By Van Cleef & Arpels
Located in Bellmore, NY
Embrace the whimsical charm of this rare Van Cleef & Arpels Onyx 18k Gold Dog Brooch, of French
Category

Late 20th Century Brooches

Materials

Onyx, Gold, 18k Gold, Yellow Gold

Beautiful Unique Sterling Silver With Onyx Crystal Drop Brooch Pin
Located in Jacksonville, FL
Onyx Crystal Drop. With a length of 3.15 inches and a width of 1.45 inches, this brooch is a petite yet
Category

20th Century American Art Deco Brooches

Materials

Onyx, Sterling Silver

Enchanting Onyx "Cats Eye" Bee Brooch in 14K White Gold
Located in New York, NY
Unveil the unique charm of our Enchanting Onyx "Cats Eye" Bee Brooch, a masterfully crafted piece
Category

21st Century and Contemporary Modern Brooches

Materials

Onyx, Gold, 14k Gold, White Gold

Enchanting Onyx "Cats Eye" Bee Brooch in 14K White Gold
Enchanting Onyx "Cats Eye" Bee Brooch in 14K White Gold
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H 0.42 in W 0.95 in L 0.77 in
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Black Onyx Brooch For Sale on 1stDibs

Find the exact black onyx brooch you’re shopping for in the variety available on 1stDibs. Each design created in this style — which was crafted with great care and often made from Gold, 18k Gold and Platinum — can elevate any look. Our collection of these items for sale includes 109 vintage editions and 19 modern creations to choose from as well. Making the right choice when shopping for a black onyx brooch may mean carefully reviewing examples of this item dating from different eras — you can find an early iteration of this piece from the 19th Century and a newer version made as recently as the 21st Century, both of which have proven very popular over the years. Creating a black onyx brooch has been a part of the legacy of many jewelers, but those produced by Van Cleef & Arpels, Cartier and Jean Vitau are consistently popular. A black onyx brooch can make for a versatile accessory, but a selection from our variety of 78 Onyx versions can add an especially stylish touch. See these pages for a round cut iteration of this accessory, while there are also brilliant cut cut and old european cut cut versions available here, too. When shopping for a black onyx brooch, you’ll find that there are less available pieces for unisex or men today than there are for women.

How Much is a Black Onyx Brooch?

On average, a black onyx brooch at 1stDibs sells for $3,395, while they’re typically $225 on the low end and $135,000 for the highest priced versions of this item.

Finding the Right brooches for You

Antique and vintage brooches, which are decorative jewels traditionally pinned to garments and used to fasten pieces of clothing together where needed, have seen increasing popularity in recent years.

Given their long history, brooches have expectedly taken on a variety of different shapes and forms over time, with jewelers turning to assorted methods of ornamentation for these accessories, including enameling and the integration of pearls and gemstones.

Cameo brooches that originated during the Victorian age are characterized by a shell carved in raised relief that feature portraits of a woman’s profile, while 19th-century micromosaic brooches, comprising innumerable individually placed glass fragments, sometimes feature miniature depictions of a pastoral scene in daily Roman life.

At one time, brooches were symbols of wealth, made primarily from the finest metals and showcasing exquisite precious gemstones. Today, these jewels are inclusive and universal, and you don’t have to travel very far to find an admirer of brooches. They can be richly geometric in form, such as the ornate diamond pins dating from the Art Deco era, or designer-specific, such as the celebrated naturalistic works created by Tiffany & Co., the milk glass and gold confections crafted by Trifari or handmade vintage Chanel brooches of silk or laminated sheer fabric.

Brooches are versatile and adaptable. These decorative accessories can be worn in your hair, on hats, scarves and on the lower point of V-neck clothing. Pin a dazzling brooch to the lapel of your blazer-and-tee combo or add a cluster of smaller pins to your overcoat. And while brooches have their place in “mourning jewelry,” in that a mourning brooch is representative of your connection to a lost loved one, they’re widely seen as romantic and symbolic of love, so much so that a hardcore brooch enthusiast might advocate for brooches to be worn over the heart.

Today, find a wide variety of antique and vintage brooches on 1stDibs, including gold brooches, sapphire brooches and more.

Questions About Black Onyx Brooch
  • 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.
  • 1stDibs ExpertApril 5, 2022
    One way to tell if your black onyx is real or not is to use a scratch test. Because black onyx clocks in at 6.5 to 7 on the Mohs scale of mineral hardness, it can’t be scratched by softer materials. Use a copper penny or a steel knife and scratch the surface of your stone. If the object leaves a scratch on the stone, it isn’t real black onyx. On 1stDibs, you’ll find a collection of genuine black onyx jewelry from some of the world’s top sellers.
  • 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.