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0.56 Carat "Square Hole Round Peg" Pavé Diamond Ring in Yellow Gold
By Eytan Brandes
Located in Sherman Oaks, CA
new ring in 14 karat yellow gold. Thirty-five bright white diamonds (all high quality, natural and
Category

2010s American Contemporary Cluster Rings

Materials

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

22.32 Carat Aquamarine 7.62 Carat Diamond and Yellow Gold Pendant
Located in Jesmond, Newcastle Upon Tyne
modern brilliant round cut diamonds; the central stone of each array is larger and paralleled by the
Category

Vintage 1950s Unknown Pendant Necklaces

Materials

Aquamarine, Diamond, 18k Gold, Yellow Gold

Edwardian1.30 Ct Sapphire 1.25 Ct Diamond Platinum Bar Brooch
Located in Napoli, IT
untreated unheated approx 1.30 Ct for the Five cushion cut stone alternated by five old mine cut Diamonds
Category

Antique Early 1900s European Edwardian Brooches

Materials

Diamond, Sapphire, 18k Gold, Platinum

Antique 5.12Ct Blue Pink and Yellow Sapphire Diamond Platinum Pendant
Located in Jesmond, Newcastle Upon Tyne
/Cushion Content 5.12 Carats Diamond Quality Color (average grades) H Clarity (average grades) VS2 Cut Old
Category

Vintage 1920s Pendant Necklaces

Materials

Diamond, Sapphire, Blue Sapphire, Pink Sapphire, Yellow Sapphire, Platinum

Natural 3.99 cts blue sapphire 0.43 cts diamond ring in 18k gold
Located in New York, NY
Blue sapphire cushion cut half eternity band ring Natural ceylon blue sapphire diamond ring gold
Category

2010s Indian Band Rings

Materials

Diamond, Blue Sapphire, 18k Gold

Antique Victorian 18K Yellow Gold 1.58tgw Sapphire, Diamond and Ruby Ring
Located in Staines-Upon-Thames, GB
mine cut diamonds and five cushion shaped rubies, set in 18 karat yellow gold, to a band of 18 karat
Category

Antique 1890s Victorian Cocktail Rings

Materials

Diamond, Ruby, Sapphire, 18k Gold, Yellow Gold

Victorian 1.63 Carats Diamond Sapphire Platinum 14 Karat Yellow Gold Band Ring
Located in Philadelphia, PA
Featuring old mine cut diamonds and cushion cut sapphires - bezel set to front and alternating in
Category

Antique 1890s Victorian Band Rings

Materials

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

Antique 1.60ct Sapphire, 1.05ct Diamond, Ruby and 15k Yellow Gold Insect Brooch
Located in Jesmond, Newcastle Upon Tyne
abdomen is embellished with five cushion cut Basaltic sapphires, encompassed with nineteen Dutch cut
Category

Antique 1890s Unknown Victorian Brooches

Materials

Diamond, Ruby, Sapphire, 15k Gold, Yellow Gold

Antique Giardinetti Ring 1ct Emerald Diamond Ruby 14K Gold SilverØ 2.5US/4gr
Located in SE
each. Five old cushion and mixed rose cut Diamonds ca. 3x 2.5mm /ca. 0.2ct each. Total weight of stones
Category

Antique 1780s European Romantic Cluster Rings

Materials

Diamond, Emerald, Ruby, 14k Gold, Silver

C1910 Multi Gemstone set Harem Ring
Located in Baltimore, MD
This 14k gold Edwardian harem ring contains an array of cushion cut diamonds, pearls, sapphires
Category

Antique Early 1900s British Edwardian Fashion Rings

Materials

Diamond, Garnet, Multi-gemstone, Freshwater Pearl, Ruby, Sapphire, Gold,...

Antique 18th Century Minas Novas Earrings Pendant/Brooch Girandole Portuguese
Located in Lisbon, PT
with circular, oval pear, antique cushion, marquise and calibré cut colorless rock crystal quartz
Category

Antique 1770s Portuguese Georgian Dangle Earrings

Materials

Quartz, Rock Crystal, Silver

1950s 6.05 Carat Aquamarine and Yellow Gold Pendant / Brooch
Located in Jesmond, Newcastle Upon Tyne
claw set cushion cut aquamarines. The upper incurve displays a further five pavé set cushion cut
Category

Vintage 1950s Unknown Drop Necklaces

Materials

Aquamarine, 18k Gold, Yellow Gold

6 Tourmaline Set Cts 11.07
Located in Hong Kong, HK
This 11.07-carat tourmaline set, sourced from Brazil, features five oval-cut and one cushion-cut
Category

2010s Hong Kong Contemporary Loose Gemstones

Materials

Tourmaline

Victorian Pearl Emerald Amethyst Yellow Gold Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
individually four claw set. Five graduated four claw set cushion cut emeralds embellish the space between the
Category

Antique 1870s English Victorian Cocktail Rings

Materials

Pearl, Emerald, Amethyst, 15k Gold, Yellow Gold

Victorian Five Stone Sapphire Diamond Gold Ring
Located in London, GB
A Victorian five stone carved half hoop sapphire and diamond ring, set alternately with five
Category

Antique Late 19th Century British Victorian Cocktail Rings

Materials

Diamond, Sapphire, Yellow Gold, Gold, 18k Gold

A Victorian five stone Burmese ruby ring
Located in London, GB
A Victorian five stone Burmese ruby ring, the three cushion-cut faceted rubies graduating from the
Category

Antique 1890s British Victorian Engagement Rings

Materials

Diamond, Ruby, 18k Gold

GIA Certified 9.35 Carat Ceylon Sapphire Diamond 3 Stone Ring
Located in Rehoboth Beach, DE
Contains (1) Cushion Cut Ceylon Sapphire Weighing Approximately 9.35cts, This Stone Measures 13.20mm x
Category

21st Century and Contemporary Sri Lankan Contemporary Three-Stone Rings

Materials

Diamond, Blue Sapphire, Platinum

Art Deco 2.00 Carat Old Cut and Rose Cut Diamond Trilogy Ring
Located in Theydon Bois, Essex
Wonderfully bold and wholly individual. The trio of cushion shaped old cut diamonds in the centre
Category

Early 20th Century Three-Stone Rings

Materials

Diamond, 18k Gold, Platinum

Victorian Five-Stone Old Cut Diamond Ring
Located in Stratford upon Avon, GB
cushion shaped diamond. Set around the central diamond are four smaller old cushion cut diamonds. The ring
Category

Antique Late 19th Century Victorian Cocktail Rings

Materials

Diamond, Yellow Gold

Victorian 1.65 Carat Old Cut Diamond Five-Stone Ring
Located in Theydon Bois, Essex
To find one old cut diamond this white it rare; to find five is neigh on miraculous! The line of
Category

Early 20th Century British Late Victorian Cluster Rings

Materials

Diamond, 18k Gold

Edwardian Ruby and Old Cut Diamond Five-Stone Ring
Located in Essex, GB
cut diamonds are inter-spaced with two bright bright pinkish red rubies. Beautiful heart-shaped
Category

Early 20th Century British Cluster Rings

Materials

Diamond, White Diamond, Ruby, Gold, 18k Gold, Yellow Gold

English 18k Gold Diamond Five Stone Ring, Mid-20th Century
Located in St. Catharines, ON
Beautiful English 18k gold ring, the half hoop set with five graduated antique-cut diamonds, in an
Category

Mid-20th Century British Victorian Wedding Rings

Materials

Diamond, 18k Gold, Gold, Yellow Gold

Art Deco Natural Sapphire and Old Cut Diamond Five-Stone Ring, circa 1920
Located in Theydon Bois, Essex
alternating with a pair of bright and lively cushion shaped old cut diamonds. Each stone is rubover set and
Category

Early 20th Century Cocktail Rings

Materials

Diamond, Sapphire, Blue Sapphire

Certified Burma Rubies English Victorian Five-Stone Rare Ring
Located in Napoli, IT
Spectacular and rare Victorian five stone English ring set with Natural, untreated, unheated Burma
Category

Antique 1880s Victorian More Rings

Materials

Diamond, Ruby, 18k Gold

Antique Victorian Five Stone Emerald Diamond Gold Ring
Located in Edinburgh, GB
An antique late Victorian five stone emerald and diamond ring, comprising three graduated old
Category

Antique Late 19th Century Unknown Victorian Fashion Rings

Materials

Diamond, Emerald, 18k Gold

Sapphire Diamonds Ring 18 Carat Five-Stone Ring
Located in Lancaster, Lancashire
central cushion cut Diamond is approx. 0.65ct with two Sapphires that are approx. 1ct. The outer Diamonds
Category

Antique 1880s Unknown Victorian Engagement Rings

Materials

Diamond, Sapphire, 18k Gold

Art Deco 2.15 Ct No Heat Blue Sapphire and Old Mine Cut Diamond Five-Stone Ring
Located in Napoli, IT
Velvety Royal Blue Antique five stone ring from the Art Deco period, beautifully designed by the
Category

Vintage 1920s Art Deco Cluster Rings

Materials

Diamond, Blue Sapphire, 18k Gold, Platinum

Victorian 1.0 Carat Old Mine Diamond 1.0 Carat Sapphire Five-Stone Ring
Located in Napoli, IT
An absolutely stunning, genuine Victorian period, five stone ring. 1870 ca. The very fine in
Category

Antique 1870s Victorian Engagement Rings

Materials

Diamond, Sapphire, 18k Gold

Victorian Five Stone No Heat Sapphire 1.6 ctw, Diamond Ring 18k rose gold.
Located in Joelton, TN
Handmade 18K rose gold, 5-stone vivid deep blue violet sapphire and rose cut diamond band. The band
Category

Antique 1890s European Victorian Wedding Rings

Materials

Diamond, Sapphire, Rose Gold

3.00 ct cushion diamond in 18ct rose gold with black rhodium accents
Located in Brasschaat, BE
This 3.00 ct cushion-cut diamond, set in 18ct rose gold, showcases a perfect blend of modern
Category

2010s Belgian Modern Engagement Rings

Materials

Diamond, Rose Gold, Rhodium

6 Carat Tanzanite and Diamond 5-Stone Cocktail Ring
By carpenter and sons
Located in Aliso Viejo, CA
blue undertones. The center stone is complimented by two matched fancy cut diamonds that have a color
Category

Early 2000s American Modern Cocktail Rings

Materials

Diamond, White Diamond, Tanzanite, 18k Gold, Yellow Gold, Platinum

3.03 Carat GIA Cert Antique Cushion Diamond Platinum Engagement Ring
Located in San Francisco, CA
A gorgeous, bright white and beautiful 3.03 carat antique cushion-cut diamond, of early twentieth
Category

21st Century and Contemporary Art Deco Solitaire Rings

Materials

Diamond, White Diamond, Platinum

Art Deco 1.23 Carat Old Cut Diamond Engagement Ring
Located in Essex, GB
old mine cut diamond in the centre is white, bright and full of life. The stone is secured in a four
Category

Mid-20th Century Engagement Rings

Materials

Diamond, White Diamond, 18k Gold, White Gold

White Diamond 5, 80ct 18K White Gold Ring
By Ara Vartanian
Located in London, London
cushion faceted cut, weighing 5.02ct (five carats and two points), along with two brilliant White Diamonds
Category

2010s Brazilian Modernist Solitaire Rings

Materials

White Diamond

6.93 Carat Emerald Diamond Fashion Ring
Located in Encino, CA
rectangular cushion mixed cut natural emerald, measuring 12.70 x 11.30 x 7.35mm, approximate weight of 6.93ct
Category

2010s American Contemporary Fashion Rings

Materials

Diamond, Emerald, 18k Gold

26, 44ct Emerald 29, 31ct Diamonds 18K White Gold Necklace
By Ara Vartanian
Located in London, London
round brilliant cut, besides 17,5ct (seventeen carats and five points) worth of Black Diamonds, in a
Category

2010s Brazilian Contemporary More Necklaces

Materials

Black Diamond, White Diamond, Emerald, White Gold

Debra Navarro Diamond and 18 Karat Yellow Gold Open Oval Large Dangle Earrings
By Debra Navarro
Located in Wichita, KS
feature 12 bezel set, colored diamonds (four pear shape, three oval, two cushion, one marquise, one round
Category

21st Century and Contemporary American Artisan Dangle Earrings

Materials

Diamond, Pink Diamond, Brown Diamond, Gold, 18k Gold, Yellow Gold

1.56 Carat Sapphire and 1.41 Carat Diamond Brooch, circa 1960
By Buccellati
Located in Essex, GB
silver leaves – each holding five stones – surrounds the central sapphire, which are interspaced by
Category

Mid-20th Century Italian Brooches

Materials

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

Edwardian Old Cushion Cut Diamond Five-Stone Ring
Located in London, GB
cushion cut diamonds in a single line formation across the face. Each stone is wonderfully matched in
Category

Antique Early 1900s Edwardian Engagement Rings

Materials

Diamond, Platinum

Late Victorian 3.50 Carat Old Cushion Cut Diamond Five-Stone Ring, circa 1900s
Located in London, GB
A stunning late Victorian era five stone ring showcasing 3.50 carats of old cushion cut diamonds
Category

Antique Early 1900s Unknown Victorian Engagement Rings

Materials

Diamond, Platinum

Vintage 18 Carat Gold Cushion Diamond Five-Stone Ring
Located in Chipping Campden, GB
A stunning vintage five-stone ring. The five beautiful cushion cut diamonds are wonderfully bright
Category

Vintage 1980s Unknown Three-Stone Rings

Materials

Diamond, Brown Diamond, 18k Gold, Yellow Gold

Edwardian Ruby Diamond 18 Karat Yellow Gold Five Stone Ring
Located in Beverly Hills, CA
One Edwardian Ruby Diamond 18 Karat Yellow Gold Five Stone Ring. Featuring three cushion mixed cut
Category

Antique Early 1900s Edwardian Three-Stone Rings

Materials

Diamond, Ruby, Gold, Yellow Gold

Henri Daussi Cushion Cut Five Stone 1.77ctw Diamond Ring
Located in New York, NY
Five Stone Cushion Cut Halo Ring Metal: 18K White Gold Diamond Shape: Cushion-Cut Diamond Details
Category

21st Century and Contemporary Belgian Modern Engagement Rings

Materials

Diamond, 18k Gold

HM 1895 Chester 18K Five Stone cushion cut diamond Ring
Located in Baltimore, MD
Because this 18K Five Stone cushion cut diamond ring is hallmarked, 1895 Chester, you are
Category

Antique 1890s British Victorian Bridal Rings

Materials

Diamond, 18k Gold

2.31 Carats Total Cushion Cut Diamond Halo Five-Stone Band
By Roman Malakov
Located in New York, NY
An elegant and stunning wedding band, showcasing five cushion cut diamonds weighing 2.31 carats
Category

21st Century and Contemporary American Contemporary Wedding Rings

Materials

Diamond, 18k Gold, White Gold, Yellow Gold

Henri Daussi Cushion Cut Five Stone 3.02ct tw Anniversary Diamond Ring
Located in New York, NY
suitable as a gift for another celebration. Five Stone Cushion Cut Halo Ring Metal: 18K White Gold Diamond
Category

2010s North American Modern Engagement Rings

Materials

Diamond, 18k Gold

Henri Daussi Cushion Cut Five Stone 1.50ct TW Anniversary Diamond Ring
Located in New York, NY
suitable as a gift for another celebration. Five Stone Cushion Cut Halo Ring Metal: 18K White Gold Diamond
Category

2010s American Modern Engagement Rings

Materials

Diamond, 18k Gold

Henri Daussi Cushion Cut Five Stone 1.50ct tw Anniversary Diamond Ring
Located in New York, NY
suitable as a gift for another celebration. Five Stone Cushion Cut Halo Ring Metal: 18K White Gold Diamond
Category

2010s American Modern Engagement Rings

Materials

Diamond, 18k Gold

Victorian Five Stone Old Cushion Cut Diamond Ring, circa 1880s
Located in London, GB
This original Victorian era ring showcases five old cushion cut diamonds in graduated sizes, set
Category

Antique 1880s Unknown Victorian Engagement Rings

Materials

Diamond, 18k Gold

Roman Malakov 2.08 Carat Five-Stone Cushion Cut Diamond Halo Wedding Band
By Roman Malakov
Located in New York, NY
A gorgeous and unique take to the traditional wedding band. Features 5 Cushion Diamonds that weighs
Category

21st Century and Contemporary American Contemporary Wedding Rings

Materials

Diamond, Rose Gold, 18k Gold

Edwardian Five Stone Diamond Ring, c.1910s
Located in London, GB
A stunning five stone diamond ring, dating back to 1910. The Edwardian style is evident in the
Category

Vintage 1910s Unknown Edwardian Engagement Rings

Materials

Diamond, 18k Gold, Yellow Gold, Platinum

Antique Sapphire Diamond Gold Five-Stone Ring
Located in Baltimore, MD
Sparkling Victorian five stone ring with three sapphires and two diamonds interspersed with eight
Category

Antique Late 19th Century British Victorian Band Rings

Materials

Diamond, Sapphire, 18k Gold, Gold

Victorian 0.80ct Diamond Five Stone Ring, c.1880s
Located in London, GB
Five old cushion cut diamond glisten in this gorgeous ring from the 1880s. The central diamond is
Category

Antique 1880s Unknown Victorian Cluster Rings

Materials

Diamond, 18k Gold

Victorian 2.90ct Five Stone Diamond Ring, c.1880s
Located in London, GB
An exceptional Victorian diamond ring, featuring five old cushion cut diamonds. Starting in the
Category

Antique 1880s Unknown Victorian Engagement Rings

Materials

Diamond, 18k Gold

Victorian 1.50ct Diamond Five Stone Ring, c.1880s
Located in London, GB
would have been made entirely by hand in the 1880s. Gemstone: Diamond Stone Shape: Old Cushion Cut Carat
Category

Antique 1880s Unknown Victorian Cluster Rings

Materials

Diamond, 18k Gold

Victorian diamond five stone ring, circa 1880
Located in London, GB
Victorian diamond five stone ring. Set to centre with one cushion shape old mine diamond in an open
Category

Antique 1880s British Victorian Engagement Rings

Materials

Diamond, Gold, Yellow Gold, Silver

Edwardian Diamond Five-Stone 18 Carat Gold Ring
Located in Chipping Campden, GB
Classic five stone 18ct gold ring holding shimmering cushion cut diamonds. Total diamond weight
Category

Antique Early 1900s Unknown Edwardian More Rings

Materials

Diamond, 18k Gold

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Cushion Cut Diamond Five Stone For Sale on 1stDibs

On 1stDibs, you can find the most appropriate cushion cut diamond five stone for your needs in our varied inventory. Every item for sale was constructed with extraordinary care, often using Gold, 18k Gold and Platinum. In our selection of items, you can find a vintage example as well as a contemporary version. You’re likely to find the perfect cushion cut diamond five stone among the distinctive items we have available, which includes versions made as long ago as the 19th Century as well as those produced as recently as the 21st Century. Creating a cushion cut diamond five stone has been a part of the legacy of many jewelers, but those produced by Roman Malakov are consistently popular. Today, if you’re looking for an antique cushion cut version of this piece and are unable to find the perfect match, our selection also includes cushion cut alternatives. When shopping for a cushion cut diamond five stone, you’ll find that there are less available pieces for unisex or men today than there are for women.

How Much is a Cushion Cut Diamond Five Stone?

The price for a cushion cut diamond five stone starts at $650 and tops out at $18,238 with these rings, on average, selling for $5,460.

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 Diamond in Jewelry Design

Antique diamond rings, diamond tiaras and dazzling vintage diamond earrings are on the wish lists of every lover of fine jewelry. And diamonds and diamond jewelry are primarily associated with storybook engagements and red-carpet grand entrances — indeed, this ultra-cherished gemstone has a dramatic history on its hands.

From “A Diamond Is Forever” to “Diamonds Are a Girl’s Best Friend,” pop culture has ingrained in our minds that diamonds are the most desired, the most lasting and the most valuable gemstone. But what makes the diamond so special? Each stone — whether it’s rubies, sapphires or another stone — is unique and important in its own right. April babies might claim diamonds for themselves, but just about everyone wants this kind of sparkle in their lives!

There are several factors that set diamonds apart from other stones, and these points are important to our gem education.

Diamonds are minerals. They are made up of almost entirely of carbon (carbon comprises 99.95 percent; the remainder consists of various trace elements). Diamonds are the hardest gemstones, ranking number 10 on the Mohs Hardness Scale. Even its name, diamond, is rooted in the Greek adamas, or unconquerable. The only object that can scratch a diamond is another diamond. Diamonds are formed deep within the earth at very high temperatures (1,652–2,372 degrees Fahrenheit at depths between 90 and 120 miles beneath the earth’s surface) and are carried up by volcanic activity. Diamonds are quite rare, according to the Gemological Institute of America, and only 30 percent of all the diamonds mined in the world are gem quality.

In the 1950s, the Gemological Institute of America developed the 4Cs grading system to classify diamonds: clarity, color, cut and carat weight. Not all diamonds are created equal (there are diamonds, and then there are diamonds). The value of the diamond depends on the clarity (flawless diamonds are very rare but a diamond's value decreases if there are many blemishes or inclusions), color (the less color the higher the grade), cut (how the diamond’s facets catch the light, certain cuts of diamonds show off the stone better than others) and carat weight (the bigger, the better).

When you start shopping for a diamond engagement ring, always prioritize the cut, which plays the largest role in the diamond's beauty (taking the time to clean your diamond ring at least every six months or so plays a role in maintaining said beauty). And 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

Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.