Skip to main content

Spread Diamond

to
21
245
170
61
50
49
285
33
30
25
16
15
42
80
153
6
3
4
5
5
5
3
1
1
3
15
212
77
2
56
45
20
19
19
to
29
6
5
5
4
64
43
38
24
24
8
5
4
2
2
1
1
291
154
92
Sort By
18 Karat Rose Gold 4.00 Carat Oval-Cut Ruby and Diamond Eternity Band Ring
By Gems Paradise
Located in Jaipur, IN
rubies accentuated by the alternating leveled down round diamonds. The flow is evenly spread with the
Category

2010s Indian Contemporary Band Rings

Materials

Diamond, Ruby, Gold, 18k Gold, Rose Gold

18 Karat Rose Gold 4.00 Carat Oval-Cut Ruby and Diamond Eternity Band Ring
By Gems Paradise
Located in Jaipur, IN
rubies accentuated by the alternating leveled down round diamonds. The flow is evenly spread with the
Category

2010s Indian Contemporary Band Rings

Materials

Diamond, Ruby, Gold, 18k Gold, Rose Gold

18 Karat White Gold 7.02 Carat Oval-Cut Ruby and Diamond Eternity Band Ring
By Gems Paradise
Located in Jaipur, IN
is evenly spread with the rubies and diamonds making it visible from all angles. The band design is
Category

2010s Indian Contemporary Band Rings

Materials

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

18 Karat White Gold 7.02 Carat Oval-Cut Ruby and Diamond Eternity Band Ring
By Gems Paradise
Located in Jaipur, IN
is evenly spread with the rubies and diamonds making it visible from all angles. The band design is
Category

2010s Indian Contemporary Band Rings

Materials

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

3.50 Carat Round Brilliant Cut Studs
By Antinori Fine Jewels
Located in Chicago, IL
when worn, and very well cut! Measuring 7.80-7.86mm in diameter, the diamonds have fantastic spreads
Category

2010s Italian Modern Stud Earrings

Materials

Diamond, White Diamond, 14k Gold

1950s Impressive Diamond Gold Ring
Located in New York, NY
serpentine rows set with round and baguette diamonds spreading long and wide over the finger, gracefully
Category

Vintage 1950s American Cocktail Rings

Materials

Diamond, 14k Gold

Georgian 2 Carat Diamond Spread 15 Carat Gold Flower Forget Me Not Brooch
Located in St Helens, GB
forget me not flower set with many rose and old cut diamonds. Spread of diamonds total over 2 carats
Category

Antique 19th Century British George III Brooches

Materials

Diamond, Gold

4 Ct H VS1 Oval Natural GIA Diamond Spreads Larger than 5 cts GIA # 1176133151
Located in New York, NY
4 ct H VS1 Oval Natural GIA Diamond (Spreads Larger than 5 cts) GIA # 1176133151
Category

2010s Loose Gemstones

Materials

Diamond

Round Aquamarine and Diamond Halo Stud Earrings
Located in Toorak, Victoria
Stunning 18kt white gold 'Halo' medium-blue aquamarine and diamond earrings. Approx. Spread
Category

2010s Etruscan Revival Stud Earrings

Materials

Aquamarine, White Diamond, 18k Gold

Antique Victorian Diamond Gold Solitaire Engagement Ring
Located in Lancaster, Lancashire
This beautiful 18ct yellow gold ring is set with a 0.45ct Old Cut Diamond  Circa 1900 The Diamond
Category

Antique Early 1900s British Victorian Solitaire Rings

Materials

Diamond, 18k Gold, Yellow Gold

French Art Deco Platinum Diamond Ring 2.04 Carat
Located in Lancaster, Lancashire
adorned with a beautiful central Diamond and a trilogy of Diamonds tapering down each shoulder. The
Category

Vintage 1920s French Art Deco Wedding Rings

Materials

Diamond, Platinum

French Art Deco Diamond Onyx Platinum Cocktail Ring
Located in Sale, Cheshire
cut Diamond - 2 carat spread, 8.2mm diameter Onyx Panel - 1.5 x 1.5cm Eight-cut Diamond shoulder
Category

Vintage 1930s English Art Deco Cocktail Rings

Materials

White Diamond, Onyx, Platinum

6.02-Carat Antique Style Cushion Cut Diamond Ring
Located in New York, NY
drama of this piece. An absolutely stunning diamond that spreads like a 10 carat stone in a sleek
Category

2010s American Engagement Rings

Materials

Diamond, 18k Gold

Georgian 3.90 Carat Dutch Rose Cut Diamond Gold Drop Earrings
Located in Napoli, IT
) approx. 90 Ct. for the six top Diamonds estimated by the spread as close back Fine Georgian artful
Category

Antique Early 1800s Georgian Drop Earrings

Materials

Diamond, 18k Gold

Georgian 8.20 Carat Diamond Sentimental Hand Museum Drop Earrings
Located in Napoli, IT
cut diamonds totalling approx 2.0 Ct (by spread) – 96 rose cut diamonds totalling approx 6,20 Ct (by
Category

Antique Early 1800s Georgian Dangle Earrings

Materials

Diamond, Gold

3.40 Carat Rose Cut Diamonds Rare Early Victorian Drop Earrings
Located in Napoli, IT
with opulence of rose cut Diamonds of fine quality considering the age. The two main Diamonds spread as
Category

Antique Mid-19th Century Victorian Dangle Earrings

Materials

Diamond, 18k Gold, Silver

18 Carat Gold Emerald Diamond Half Eternity Stack Ring
Located in St Helens, GB
white gold claw settings. ​Set with seven natural alternating emeralds and diamonds. ​18mm spread of
Category

20th Century British Contemporary Band Rings

Materials

Diamond, Emerald, Gold

Remarkable Georgian 1.80 Carat Diamond Rare Panel Ring, circa 1790
Located in Napoli, IT
total – all diamond are calculated by the spread and not by weight as close back set – TCW 1.80 Ct fair
Category

Antique 1790s Georgian Three-Stone Rings

Materials

Diamond, 18k Gold, Silver

1.50 Carat Diamond 18 Carat White Gold Trilogy Ring
Located in St Helens, GB
A superb quality three natural diamond ring. Solid 18 carat white gold example. Set with three
Category

20th Century British Art Deco Three-Stone Rings

Materials

Diamond, White Gold

Unusual 2.30 Carat Flat Cut Diamond Memento Mori Skull Earrings
Located in Napoli, IT
cut Diamonds spreading as much as 2.30 Ct - measured by the size and not by weight being
Category

Antique 1850s Victorian Dangle Earrings

Materials

Diamond, 18k Gold, Silver

18 Carat Gold Blue Sapphire and Diamond Cluster Ring
Located in St Helens, GB
A superb Sapphire and Diamond cluster ring. Of Victorian design but a modern piece. 18 carat yellow
Category

20th Century British Victorian Cluster Rings

Materials

Diamond, Blue Sapphire, Gold

Victorian Turquoise Rose Cut Diamond 14 Carat Gold Trilogy Ring
Located in St Helens, GB
turquoise to centre with bezel setting. To each side are natural rose cut diamonds, each to spread approx
Category

Antique 19th Century British Victorian Three-Stone Rings

Materials

Diamond, Turquoise, Gold

Beautiful 1.75 Carat Diamond Five-Stone Platinum Bezel Set Stack Ring
Located in St Helens, GB
total approx 1.75 carats. Very bright, clean and sparkly diamonds. 20mm spread of stones, 6mm wide
Category

21st Century and Contemporary British Edwardian Band Rings

Materials

Diamond, Platinum

Ruby and Diamond 18 Carat Gold Cluster Ring on Twist
Located in St Helens, GB
ruby stones, 3.6mm diameter. Each surrounded by multiple round cut natural diamonds. 14mm spread of
Category

20th Century British Contemporary Cluster Rings

Materials

Diamond, Ruby, Gold

18 Carat Gold Sapphire and Diamond Half Eternity Stack Ring
Located in St Helens, GB
A superb 18 carat gold, sapphire and diamond ring. Solid 18 carat yellow gold example with white
Category

20th Century British Art Deco Band Rings

Materials

Diamond, Sapphire, Gold

Diamond Three Strand Bubble Ring in 18ct Yellow Gold
Located in Yorkshire, West Yorkshire
A beautifully and bubbly ring. This bubble ring has six equal sized Diamonds spread evenly along
Category

21st Century and Contemporary British Modern Cocktail Rings

Materials

Diamond, 18k Gold, Yellow Gold

Heavy 18 Carat Gold Sapphire Cabochon and Diamond Cluster Ring
Located in St Helens, GB
. To each side are four princess cut blue sapphires with 32 natural round cut diamonds too. 22mm spread
Category

21st Century and Contemporary British Contemporary Cluster Rings

Materials

Diamond, Blue Sapphire, 18k Gold

Stunning Boodles Designer 18 Carat Gold and Five Diamond Stack Ring
By Boodle Dunthorne
Located in St Helens, GB
Modelled in 18 carat yellow gold with five tension channel set diamonds. The diamonds spread 13mm and
Category

20th Century British Contemporary Band Rings

Materials

Diamond, 18k Gold

Gem Bleu Fancy Light Yellow Cushion Diamond 2.27 Carat Ring GIA Certified
Located in New York, NY
with the glimmer that the surrounding round diamonds spread. Crafted in 18K two tone gold, wear this
Category

2010s American Contemporary Cocktail Rings

Materials

Diamond, Yellow Diamond, 18k Gold, 22k Gold, White Gold, Yellow Gold

Antique Victorian Era 18K Gold 3 Carats Diamond Flower Brooch
Located in Versailles, FR
Timeless and chic in equal measures, this ultra-sparkling diamond brooch not only has a very
Category

Antique 19th Century French Victorian Brooches

Materials

Diamond, 18k Gold

Quality Antique 1.55ct Old Cut Diamond and Platinum Trilogy Ring
Located in St Helens, GB
diamonds. 15mm spread of stones. Protruding 5.8mm off the finger. Condition; Excellent. Crisp design
Category

20th Century British Art Deco Engagement Rings

Materials

Diamond, Platinum

Nine Rose Cut Diamond 18 Carat Gold Stack Half Eternity Ring
Located in St Helens, GB
diamonds spread 23mm wide and protrude 4.5mm off the finger. The diamonds date to the mid Victorian period
Category

20th Century British Victorian Fashion Rings

Materials

Diamond, 18k Gold, Yellow Gold

VS 2.00 Carat Diamond 18 Carat White Gold Five-Stone Stack Ring
Located in St Helens, GB
carats. ​VS clarity, clean, clear and sparkly diamonds. ​21mm spread of stones. Protruding 5mm off the
Category

20th Century British Contemporary Fashion Rings

Materials

Diamond, 18k Gold

Gorgeous 18 Carat Gold Ruby and Diamond Wave Stack Half Eternity Ring
Located in St Helens, GB
A beautiful Ruby and Diamond ring. SIZE ; N UK, 6 3/4 US Solid 18 carat yellow gold example. Great
Category

20th Century British Contemporary Band Rings

Materials

Diamond, Ruby, 18k Gold

Art Deco 1.75 Carat Emerald Cut Burmese Ruby and Diamond Platinum Ring
Located in Essex, GB
pass through the stone, as well as giving it a generous “spread.” Forty-two eight-cut diamonds are set
Category

Mid-20th Century Solitaire Rings

Materials

Diamond, Ruby, Platinum

Antique Georgian Garnet Diamond Ring 18 Carat Gold Fleur-de-Lis
Located in Lancaster, Lancashire
Diamonds. The top Diamond spreads 0.65ct approx. A beautiful ornate 18ct gold shank is set with lovely
Category

Antique 1710s British Georgian Engagement Rings

Materials

Diamond, Garnet, 18k Gold, Yellow Gold

Old Cushion Cut Diamond Ring, 4.14 Carat, circa 1930s, French Platinum Mark
Located in Yorkshire, West Yorkshire
/Australia); 51/8 (US/Canada) With over 4.0ct of diamonds spread over three old cushion cut diamonds this
Category

Vintage 1930s French Art Deco Three-Stone Rings

Materials

Diamond, Platinum

0.95 Carat Old Cut Diamond and Sapphire 18 Carat Gold Trilogy Ring
Located in St Helens, GB
dark blue sapphire, 5.8mm in diameter. Stylish example. i2 clarity diamond. 17.5mm spread ot stones
Category

20th Century British Victorian Three-Stone Rings

Materials

Diamond, Sapphire, 18k Gold

18 Carat Yellow Gold and VS 0.5 Carat Diamond Half Eternity Stack Ring
Located in St Helens, GB
carat weight 0.50cts as confirmed to the shank. 20mm spread of diamonds. 3.6mm wide band to front
Category

20th Century British Contemporary Engagement Rings

Materials

Diamond, Yellow Gold

Amazing 2.5 Carat VS Rose Cut Diamond and 18 Carat Gold Snake Ring
Located in St Helens, GB
carat yellow gold shank. Set with 20 natural round and pear shaped rose cut diamonds. Total diamond
Category

20th Century British Victorian Cluster Rings

Materials

Diamond, 18k Gold

18 Karat White Gold Band Style Ring Set with 1.88 Diamonds Made in Italy
Located in MIlan, IT
elegant open work style ring, diamonds are spread and it gives to the ring a very light look, very good as
Category

21st Century and Contemporary Italian Contemporary Band Rings

Materials

Diamond, White Gold

2.00 Carat Old Cut Diamond 18 Carat White Gold Antique Engagement Ring
Located in St Helens, GB
spread 2.00 carats. The split shoulders are each set with seven small natural diamonds. The central
Category

Early 20th Century British Art Deco Engagement Rings

Materials

Brown Diamond, 18k Gold

18 Carat White Gold 0.30 Carat Diamond Curved Wishbone Half Eternity Ring
Located in Yorkshire, West Yorkshire
15 Diamonds that spread across the whole head of the ring allowing it to sparkle form all angle with
Category

21st Century and Contemporary British Modern Wedding Rings

Materials

Diamond, 18k Gold, White Gold

Art Deco 1.54 Ctw. Old Mine Diamond Cocktail Ring H I VS2 in Platinum
Located in New York, NY
spread across this statement ring. Diamond Details: Primary Stone: 0.72 ct. Old Mine Color/Clarity: H-I
Category

Mid-20th Century Unknown Cocktail Rings

Materials

Diamond, Platinum

Art Deco Ceylon Sapphire 0.4 Carat Diamond 18 Carat Gold Trilogy Ring circa 1930
Located in St Helens, GB
old cut diamond to each side, 0.4ct diamond. 11.3mm spread of stones. Protruding 3.9mm off the finger
Category

20th Century British Art Deco Three-Stone Rings

Materials

Diamond, Blue Sapphire, 18k Gold

Modern 0.90ct Diamond Bubble Style Ring in White and Yellow Two Tone Gold
Located in Yorkshire, West Yorkshire
A beautifully and bubbly ring. This bubble ring has nine different sized Diamonds spread evenly
Category

21st Century and Contemporary British Modern Cocktail Rings

Materials

Diamond, Gold, 18k Gold, White Gold

VS 0.70 Carat Old Cut Diamond 18 Carat Gold Toi Et Moi Twist Two-Stone Ring
Located in St Helens, GB
toi et moi design on twist. 9mm x 8mm spread. ​ CONDITION ; Excellent. Well set diamonds, issue
Category

20th Century British Edwardian Engagement Rings

Materials

Diamond, 18k Gold

Cropp and Farr VS 0.90 Carat Diamond and Ruby 18 Carat Gold Half Eternity Ring
Located in St Helens, GB
carat yellow gold shank. Set with alternating princess cut natural rubies and diamonds. 20mm spread of
Category

20th Century British Modern Band Rings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

TIFFANY CO. Gold Free Form Earrings with Diamonds
By Tiffany Co.
Located in New York, NY
Jumbo heavy 18KT gold earrings with beautiful full cut diamonds sporadically spread around earrings.
Category

American Clip-on Earrings

Old European Cut Diamond and Square Red Ruby Sundial Ring in 14 Carat Rose Gold
Located in Hamilton, AU
additional glittering old cut diamonds spreading across the ring. We have named this vintage adornment The
Category

20th Century Unknown Modern Cocktail Rings

Materials

Diamond, Ruby, 14k Gold, Rose Gold

A Delightful Victorian Pearl Ruby Diamond Gold Spread Winged Owl Brooch
Located in London, GB
Pave set with Natural Half Pearls and with Cabochon Ruby Eyes and Rose Diamond "Eyebrows". Unmarked
Category

Antique 1860s British Victorian Brooches

Materials

Diamond, Natural Pearl, Ruby, 18k Gold

5.00 Carat Diamond Vintage Spray Earrings
Located in Napoli, IT
during 1950 ca of solid 18 KT white gold- Italian origin Diamond Sparkle spreading all over the whole
Category

Vintage 1950s Italian Contemporary Clip-on Earrings

Materials

Diamond, 18k Gold

Victorian 3.80 Carat Diamond Rare Drop Earrings
Located in Napoli, IT
spread by a diamond gauge, not by weight as flat back- large Diamond content – top white and very good in
Category

Antique 1860s Victorian Dangle Earrings

Materials

Diamond, 18k Gold

Extremely Rare Antique 9.50 Carat Diamond Ring
Located in Napoli, IT
2.30 Ct the eiight more Diamonds in surround have a total content of 6.80 Ct measured by the spread
Category

Antique 1790s Georgian Cluster Rings

Materials

Diamond, 18k Gold, Silver

Vintage 5.20 Carat Rose Cut Diamond Rare Ring
Located in Napoli, IT
– spreads as for a 3.0 Carat Diamond, being unconventional cut we give the size by the diameter not by the
Category

Antique Early 1900s Edwardian Cluster Rings

Materials

Diamond, 18k Gold

Victorian Rose Cut Diamond Floret Cluster Pendant Plus Chain
Located in Napoli, IT
quality and full of glistening sparkle – the figure out as 1.90 Ct if measured by spread using a Diamond
Category

Antique 1880s Victorian Pendant Necklaces

Materials

Diamond, 18k Gold

Georgian 2.95 Carat Rose Cut Diamond Rare Cluster Ring
Located in Napoli, IT
diamonds totalling approx 2.45 Ct (by spread) – 12 rose cut diamonds totalling approx .50 Ct (by spread) UK
Category

Antique 1790s Georgian More Rings

Materials

Diamond, 18k Gold

  • 1
Get Updated with New Arrivals
Save "Spread Diamond", and we’ll notify you when there are new listings in this category.

Spread Diamond For Sale on 1stDibs

Surely you’ll find the exact spread diamond 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, 18k gold and white gold. Our collection of these items for sale includes 241 vintage editions and 264 modern creations to choose from as well. Finding the perfect spread diamond 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. For this particular piece, .5 carat and 1 carat are consistently popular carat weights. There have been many well-made iterations of the classic spread diamond over the years, but those made by Gems Paradise, Antinori Fine Jewels and Tzuri are often thought to be among the most beautiful. Today, if you’re looking for a round cut version of this piece and are unable to find the perfect match, our selection also includes oval cut and old european cut alternatives. If you’re browsing our inventory for a spread diamond, 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 Spread Diamond?

Prices for a spread diamond can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $167 and can go as high as $776,250, while this accessory, on average, fetches $4,599.

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.