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Chasm Ring v2 (Wide, PA)
Located in Paris, FR
Ring in polished sterling silver. Dimensions: Ring Band Width (at Narrowest Point): 12 mm Ring
Category

2010s Fashion Rings

Materials

Sterling Silver

Chasm Ring v2 (Wide, MA)
Located in Paris, FR
Ring in matte sterling silver. Dimensions: Ring Band Width (at Narrowest Point): 12 mm Ring Band
Category

2010s Fashion Rings

Materials

Sterling Silver

Olive Green Jade Bead Ring 18k Yellow Gold
Located in Honolulu, HI
Ring Specifications: Metal: 18k Yellow Gold Total Weight: 8.1 Grams Jade Diameter: 12 mm Ring
Category

Late 20th Century Unknown Modern Cocktail Rings

Materials

Jade, Yellow Gold, 18k Gold

David Yurman Stax Narrow Ring with Diamonds in 18K Gold
By David Yurman
Located in New York, NY
18-karat Yellow Gold Pavé Diamonds, 0.21 total carat weight Ring, 12mm Ring size: 7.5 Comes with
Category

2010s American Cocktail Rings

Materials

Diamond, 18k Gold

Crevice Ring v2 (Wide, MZA)
Located in Paris, FR
Width (at Narrowest Point): 12 mm Ring Band Width (at Widest Point): 20 mm Weight: 35 gr
Category

2010s Fashion Rings

Materials

Bronze, Sterling Silver

Chasm Ring v2 (Wide, AG+A)
Located in Paris, FR
Width (at Narrowest Point): 12 mm Ring Band Width (at Widest Point): 20 mm Weight: 28 gr
Category

2010s Fashion Rings

Materials

Sterling Silver

Bvlgari B.zero1 18 Karat Rose Gold and Green Marble 4-Band Ring
By Bulgari
Located in New York, NY
, boasting band thickness of 12 mm. Ring Size: 4
Category

21st Century and Contemporary American Band Rings

Crevice Ring v2 (Full Fuse, Wide, DA18K)
Located in Paris, FR
Width (at Narrowest Point): 12 mm Ring Band Width (at Widest Point): 20 mm Weight: 41 grams
Category

2010s Fashion Rings

Materials

18k Gold, Yellow Gold, Sterling Silver

Tiffany & co Sterling Silver Sparkler Amethyst Gemstone Ring Size 6.75
By Tiffany & Co.
Located in New York, NY
16 X 12mm Ring Size 6.75 Ring Weight 5gr Condition new, never worn Tiffany& Co Pouch included Retail
Category

21st Century and Contemporary Cocktail Rings

Materials

Amethyst, Sterling Silver

Crevice Ring v2 (Fuse, Wide, DA18K)
Located in Paris, FR
diamond. Dimensions: Ring Band Width (at Narrowest Point): 12 mm Ring Band Width (at Widest Point): 20 mm
Category

2010s Fashion Rings

Materials

Diamond, 18k Gold, Sterling Silver

Rock Crystal Ring Silver Raw Crystals Grey Lord of the Rings
Located in Berlin, DE
х 1.5 in / 25 х 38 mm stone weight - 68 carats ring weight - 37 grams ring height - 0.47 in / 12 mm
Category

2010s French Artisan Fashion Rings

Materials

Crystal, Rock Crystal, Silver, Sterling Silver

Tiffany & Co. Sterling Silver Sparklers Citrine Ring Size 7
By Tiffany & Co.
Located in New York, NY
Dimension 16 X 12mm Ring Size 7 Ring Weight 4.9gr Hallmarks: Tiffany & Co. AG925 Condition New, never worn
Category

21st Century and Contemporary Cocktail Rings

Materials

Citrine, Sterling Silver

Large Rock Crystal Ring Silver Raw Druse Crystals Grey Lord of the Rings
Located in Berlin, DE
х 1.5 in / 25 х 38 mm stone weight - 68 carats ring weight - 37 grams ring height - 0.47 in / 12 mm
Category

2010s French Artisan Fashion Rings

Materials

Crystal, Rock Crystal, Silver, Sterling Silver

Faceted 2.15 Carats Ethiopian Opal Cluster Ring Sterling Silver
Located in Laguna Niguel, CA
: Sterling Silver Rhodium Plated Height: 5.5 mm Width: 21.5 mm Length: 12 mm Ring Size: 10* US *It can be
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Opal, Rhodium, Silver, Sterling Silver

Faceted 2.15 Carats Ethiopian Opal Cluster Ring Sterling Silver
Located in Laguna Niguel, CA
: Sterling Silver Rhodium Plated Height: 5.5 mm Width: 21.5 mm Length: 12 mm Ring Size: 10* US *It can be
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Opal, Rhodium, Silver, Sterling Silver

Faceted 2.15 Carats Ethiopian Opal Cluster Ring Sterling Silver
Located in Laguna Niguel, CA
: Sterling Silver Rhodium Plated Height: 5.5 mm Width: 21.5 mm Length: 12 mm Ring Size: 10* US *It can be
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Opal, Rhodium, Silver, Sterling Silver

Faceted 2.15 Carats Ethiopian Opal Cluster Ring Sterling Silver
Located in Laguna Niguel, CA
: Sterling Silver Rhodium Plated Height: 5.5 mm Width: 21.5 mm Length: 12 mm Ring Size: 10* US *It can be
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Opal, Rhodium, Silver, Sterling Silver

TIFFANY & Co Sparklers Cocktail Green Quartz Ring Sterling Silver size 6.75
By Tiffany & Co.
Located in New York, NY
Quartz Dimension is 16 x 12 mm Ring Size 6.75 Ring Weight 7 gr Hallmarks: Tiffany & Co AG925 Condition
Category

21st Century and Contemporary Cocktail Rings

Materials

Quartz, Sterling Silver

Pear Shape Vivid Blue Sapphire & Diamond 14k Yellow Gold Ring
Located in Laguna Niguel, CA
( Color: H, Clarity: SI ) Metal: 14K Yellow Gold Height: 5 mm Width: 20 mm Length: 12 mm Ring Size: 7* US
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Diamond, White Diamond, Blue Sapphire, Gold, 14k Gold, Yellow Gold

Pear Shape Vivid Blue Sapphire & Diamond 14k Yellow Gold Ring
Located in Laguna Niguel, CA
( Color: H, Clarity: SI ) Metal: 14K Yellow Gold Height: 5 mm Width: 20 mm Length: 12 mm Ring Size: 7* US
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Diamond, White Diamond, Blue Sapphire, Gold, Yellow Gold, 14k Gold

Pear Shape Natural Blue Sapphire & Diamond 14k White Gold Ring
Located in Laguna Niguel, CA
Diamonds = 0.30 Carats ( Color: J, Clarity: SI ) Metal: 14K White Gold Height: 5 mm Width: 20 mm Length: 12
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Diamond, White Diamond, Blue Sapphire, Gold, 14k Gold, White Gold

Pear Shape Natural Blue Sapphire & Diamond 14k White Gold Ring
Located in Laguna Niguel, CA
Diamonds = 0.30 Carats ( Color: J, Clarity: SI ) Metal: 14K White Gold Height: 5 mm Width: 20 mm Length: 12
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Diamond, White Diamond, Blue Sapphire, Gold, 14k Gold, White Gold

Burmese Sapphire Diamond Cocktail Ring
By Jaipur Atelier
Located in Los Angeles, CA
30mm Width apprx 12mm. - Ring is currently size 8 and resizable.
Category

2010s Indian British Colonial Cocktail Rings

Materials

Diamond, Sapphire, 18k Gold

Aquamarine 18k Gold Silver Cocktail Ring
By Emma Chapman
Located in Frome, Somerset
engraved and is oxidized. Dimensions - 15mm x 12mm Ring size - UK P/USA 7 3/4 The ring can be resized on
Category

21st Century and Contemporary Indian Contemporary Cocktail Rings

Materials

Aquamarine, Silver, 18k Gold

Aquamarine Cabochon Hand Engraved Cocktail Ring
By Emma Chapman
Located in Frome, Somerset
patterns. Dimensions - 15mm x 12mm Ring size - UK - O / US - 7.25
Category

21st Century and Contemporary Indian Artisan Cocktail Rings

Materials

Aquamarine, 18k Gold, Sterling Silver

Dalben Homage to Mondrian Unisex Enamel Gold Ring
By Laura Dalben
Located in Como, IT
. Height 0,47 inch (12 mm), ring size 7 1/4 USA 55 EU . For other size the ring requires four week from
Category

21st Century and Contemporary Italian Contemporary Cocktail Rings

Materials

18k Gold, Gold, Yellow Gold, Enamel

Tanzanite Diamond 18k Gold Silver Engraved Ring
By Emma Chapman
Located in Frome, Somerset
. DImensions - 12mm x 12mm Ring size - UK O 1/2/USA - 7.5 The ring can be resized on request.
Category

21st Century and Contemporary Asian Artisan Band Rings

Materials

Diamond, Tanzanite, 18k Gold, Silver

Tourmaline Diamond 18 Karat Gold Silver Diamond Cocktail Ring
By Emma Chapman
Located in Frome, Somerset
engraving work on it. The shank has lovely flower motifs on it. Ring dimensions - 17mm x 12mm Ring size
Category

21st Century and Contemporary Indian Contemporary Cocktail Rings

Materials

Diamond, Tourmaline, 18k Gold, Sterling Silver, Gold, Silver

Handcraft Mouse Face 18 Karat White Gold Australian Pearl Diamonds Cocktail Ring
By SCALA GIOIELLI
Located in Marcianise, IT
size 12 mm Ring total weight 7.20 grams Ring size 7.75 US 16 Ita (all rings are can be resized)
Category

21st Century and Contemporary Italian Artisan Cocktail Rings

Materials

Diamond, Pearl, White Gold, 18k Gold

Colombian Emeralds and Diamonds Ring, 18 Karat Gold
Located in Bad Kissingen, DE
". - 15 Colombian emeralds of approx. 4.76 ct - 24 diamonds of approx. 0,32 cts - top width: approx. 12 mm
Category

Vintage 1980s Unknown Modern Band Rings

Materials

Diamond, Emerald, 18k Gold

Vintage Mabe Pearl Rope Ring in 14 Karat Yellow Gold
Located in Addison, TX
This Vintage pearl fashion ring is truly impressive. The center is a beautiful 12mm mabe white
Category

Late 20th Century Retro Fashion Rings

Materials

Pearl, 14k Gold, Yellow Gold

Fabulous Tahitian Pearl and Diamond Ring in White Gold
By Bucherer
Located in Lucerne, CH
Gorgeous ring manufactured in 18 karat white gold centering one Tahitian Cultured Pearl of 12.0 mm
Category

21st Century and Contemporary Swiss Modern Cocktail Rings

Materials

Diamond, Black Pearl, Cultured Pearl, Pearl, 18k Gold, White Gold

Boulder Opal Silver Ring Australian Opal Wedding Anniversary Statement Ring
Located in Berlin, DE
- Australia opal measurements - 0.31 x 0.47 in / 8 х 12 mm ring weight - 7.6 grams ring size - 8 1/4 US ref
Category

2010s German Art Deco Cocktail Rings

Materials

Opal, Gold Plate, Silver

Australian Crystal Opal Ring Silver 18K Gold neon wedding anniversary
Located in Berlin, DE
opal measurements - 0.39 x 0.47 in / 10 х 12 mm ring weight - 7.2 grams ring size - 7 1/4 US ref No
Category

2010s German Artisan Cocktail Rings

Materials

Opal, Crystal, 18k Gold, Silver

GIA Certified 3.10 F VVS2 Emerald Cut Diamond Solitaire Engagement Ring
Located in Santa Barbara, CA
Finger: 12mm Ring Face: 8mm x 12mm Band Width: 1.4mm Weight: 4.1 grams Includes: GIA Report #5212685537
Category

21st Century and Contemporary Contemporary Solitaire Rings

Materials

Diamond, Platinum

GIA Certified 17.15 Carat Unheated Ruby Ring
Located in Santa Barbara, CA
Finger: 12mm Ring Face: 19mm x 15.5mm Band Width: 2mm Weight: 10.4 grams Includes: Certified Appraisal
Category

2010s Art Deco Cocktail Rings

Materials

Ruby, Diamond, 18k Gold, Yellow Gold, Platinum

Retro Deep Blue 20 Carat Cushion Aquamarine Cocktail Ring
Located in Santa Barbara, CA
Above Finger: 12mm Ring Face: 18mm x 20.5mm Band Width: 3mm - 5.5mm Weight: 18.5 grams Graded by GIA
Category

Vintage 1940s Retro Cocktail Rings

Materials

Aquamarine, Diamond, Platinum

Signed Wesley Emmons Modernist Sterling Silver & Grey Baroque Pearl Ring
By Wesley Emmons
Located in Philadelphia, PA
Gemstone Measurements: Grey baroque pearl: ca. 9 mm x 12 mm Ring Size: ca. 6 1/2 Items purchased from
Category

Mid-20th Century American Modernist Solitaire Rings

Materials

Pearl, Sterling Silver

Emilio Jewelry Certified 3.98 Carat Ceylon Sapphire Diamond Ring
By Emilio!
Located in New York, NY
is 7.50mm frontage width with center and side stones about 12mm Ring is currently US size 7 and is
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, White Diamond, Blue Sapphire, Platinum

Nephrite Jade Gold Ring Green Cats Eye Effect Chatoyancy Engagement Ring
By Alexey Gabilo
Located in Berlin, DE
- 0.31 х 0.43 х 0.47 in / 8 х 11 х 12 mm ring size - 6.5 US (we can resize) ring weight - 5.39 grams We
Category

2010s French Art Nouveau Engagement Rings

Materials

Jade, Gold, 14k Gold, Yellow Gold

Elongated Mid Century Carnelian Diamond Citrine Cocktail Ring
Located in Santa Barbara, CA
Size: 7 3/4, sizing available Rise Above Finger: 12mm Ring Face: 16mm x 30 mm Band Width: 3mm Weight: 9
Category

Vintage 1960s Retro Cocktail Rings

Materials

Carnelian, Citrine, Diamond, 14k Gold

GIA Certified 5.01 Carat Emerald Cut Diamond Engagement Ring
By Bella Rosa Estate Jewelers
Located in Santa Barbara, CA
Rise Above Finger: 12mm Ring Face: 12mm L x 15mm W Band Width: 3.5mm Weight: 9.6 grams Graded by GIA
Category

21st Century and Contemporary American Contemporary Engagement Rings

Materials

Diamond, Platinum

Nephrite Jade Gold Ring Green Cats Eye Effect Chatoyancy Art Nouveau style
Located in Berlin, DE
- 0.31 х 0.43 х 0.47 in / 8 х 11 х 12 mm ring size - 6.5 US (we can resize) ring weight - 5.39 grams We
Category

2010s French Art Nouveau Fashion Rings

Materials

Jade, 14k Gold, Yellow Gold, Gold

Pear Shape Orange Imperial Topaz and Diamond Cocktail Ring 14 Karat Yellow Gold
Located in Scottsdale, AZ
: 25 mm Height: 12 mm Ring outer diameter: 22 mm Topaz dimensions: 24.26 mm long x 11.11 mm wide
Category

Late 20th Century Contemporary Cocktail Rings

Materials

Diamond, Imperial Topaz, Topaz, Gold, 14k Gold, Yellow Gold

Ella Gafter 12mm Pearl Diamond Ring
By Ella Gafter
Located in New York, NY
This pearl and diamond ring features two pearls of 12mm diameter each. The pearls are untreated
Category

21st Century and Contemporary Italian Artist Cocktail Rings

Materials

White Diamond, Black Pearl, South Sea Pearl, Diamond, Pearl, 18k Gold, W...

Contemporary 12mm Tahitian Pearl Gold Band Ring
Located in Narberth, PA
An absolutely fabulous Estate gold and pearl ring! This beautiful piece is made of vibrant 18kt
Category

21st Century and Contemporary Unknown Contemporary Cocktail Rings

Materials

Oriental Pearl, 18k Gold, Yellow Gold

Estate DAVID YURMAN Sterling Silver Amethyst Ring With Diamonds size 7
Located in New York, NY
: sterling silver Weight: 9.8 grams Pave diamonds, 0.22 total carat weight stone 11 X 12 mm Ring size 7
Category

2010s Engagement Rings

Materials

Diamond, Amethyst, Sterling Silver

Onyx 12mm And Antique Rose Cut Diamond Cocktail Ring.
Located in Hong Kong, HK
ring is set in 18k white gold. The Onyx is 12mm in size and round. There are 14 authentic antique rose
Category

2010s Hong Kong Cocktail Rings

Materials

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

Oscar Heyman Platinum 12mm Tahitian Pearl & Diamond Flower Ring
By Oscar Heyman
Located in New York City, NY
Oscar Heyman platinum ring contains a stunning 12mm Tahitian Pearl at the center of a flower
Category

2010s American Contemporary Cocktail Rings

Materials

Diamond, Pearl, Platinum

12mm Golden South Sea Pearl and Natural Diamonds ring
Located in Singapore, SG
This stunning AAA-quality 12mm Golden South Sea Pearls boast a brilliant 18-karat gold shade, an
Category

21st Century and Contemporary Singaporean Art Deco Cocktail Rings

Materials

Gold, 18k Gold

Sistema Ring (0.4 CT, Diamond Slab, 12mm, PA+DIA)
Located in Paris, FR
Ring in polished sterling and a slab of rough diamond. The Sistema series is first family within
Category

2010s Fashion Rings

Materials

Diamond, Sterling Silver

Sistema Ring (0.4 CT, Diamond Slab, 12mm, DA+DIA)
Located in Paris, FR
Ring in acid treated sterling silver and a slab of rough diamond. The Sistema series is first
Category

2010s Fashion Rings

Materials

Diamond, Sterling Silver

Sistema Ring (Terrestrial Surfaced, 3 Tanzanites, 12mm, KA+TAN)
Located in Paris, FR
Ring in oxidized sterling silver and slabs of tanzanites. The Sistema series is first family within
Category

2010s Fashion Rings

Materials

Tanzanite, Sterling Silver

12mm Round Yellow Quartz Gemstone Ring in Sterling Silver
By Stephen Dweck
Located in Lyndhurst, NJ
Stephen’s heart and passion go into each Dweck design, as the placement of each stone and its connection to nature has meaning. While bold and opulent, his jewelry has a weightless e...
Category

21st Century and Contemporary American Artisan Cocktail Rings

Materials

Quartz, Sterling Silver

Cartier Vintage Gold and Steel Suite
Located in London, GB
Width: 12mm Ring Size: L (52) Earring Dimensions: 15mm x 13mm (not including posts) Marked: 'Cartier
Category

20th Century Bangles

Materials

18k Gold

Edwardian 12 MM. Natural Split Pearl 1.60 Ct Diamond Engagement Ring
Located in Napoli, IT
and exalt the beauty of the colossal 12 mm. in size Natural Salt water Sea 3/4 split Pearl set as
Category

Antique Early 1900s European Edwardian Engagement Rings

Materials

Diamond, Pearl, Platinum, 18k Gold

Sistema Ring (Terrestrial Surfaced, 3 Rainbow Moonstones, 12mm, DA+RMS)
Located in Paris, FR
Ring in acid treated sterling silver and slabs of rainbow moonstone. The Sistema series is first
Category

2010s Fashion Rings

Materials

Rainbow Moonstone, Sterling Silver

Roberto Coin Nabucco Diamond & Gemstone 18K Suite Set of 4
By Roberto Coin
Located in Miami, FL
Earrings Measurement: 21mm x 12mm Ring Measurement: 13mm wide X 5mm high Ring Size 8 (Sizable) Marked
Category

21st Century and Contemporary Italian Choker Necklaces

Materials

Diamond, 18k Gold

12mm Sleeping Beauty Turquoise & 0.48ct Diamond Cocktail Ring in 18K White Gold
Located in MELBOURNE, AU
, rare & highly sought after diamond's size & top quality materials make this ring very special
Category

Early 2000s Australian Modern Cocktail Rings

Materials

Diamond, Turquoise, White Gold, 18k Gold

Vintage 12mm White South Sea Pearl and Multi Diamond Gold Cocktail Ring
Located in Montreal, QC
Simply Beautiful! Finely detailed White South Sea Pearl and Diamond Cocktail Ring. Center securely
Category

21st Century and Contemporary Modern Cocktail Rings

Materials

Diamond, South Sea Pearl, Gold, 18k Gold, White Gold

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12mm Ring For Sale on 1stDibs

Surely you’ll find the exact 12mm ring you’re seeking on 1stDibs — we’ve got a vast assortment for sale. Frequently made of gold, 18k gold and yellow gold, this item was constructed with great care. In our selection of items, you can find a vintage example as well as a contemporary version. Finding the perfect 12mm ring may mean sifting through those created during different time periods — you can find an early version that dates to the 18th Century and a newer variation that were made as recently as the 21st Century. A 12mm ring from LB Exclusive, Cartier and Bulgari — each of whom created a beautiful version of this treasured accessory — is worth considering. While most can agree that any 12mm ring from our collection can easily elevate most outfits, but the choice of a diamond version from the 4132 available is guaranteed to add a special touch to your ensemble. A round cut version of this piece has appeal, but there are also oval cut and emerald cut versions for sale. When shopping for a 12mm ring, you’ll find that there are less available pieces for unisex or men today than there are for women.

How Much is a 12mm Ring?

On average, a 12mm ring at 1stDibs sells for $2,297, while they’re typically $0 on the low end and $1,575,000 for the highest priced versions of this item.

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 12mm Ring
  • 1stDibs ExpertFebruary 22, 2021
    A size 7 ring is 17.3 millimeters (mm). You can shop a variety of size 7 rings on 1stDibs.com.