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1930s Antique 4.42 Carat Diamond and Emerald White Gold Engagement Ring
Located in Jesmond, Newcastle Upon Tyne
carat Old European round cut diamond eight claw set in subtle relief to the center of the design. The
Category

Vintage 1930s Unknown Solitaire Rings

Materials

Diamond, Emerald, 18k Gold, White Gold

Natural Diamonds Pendant 1.00ct 18KT White Gold Modern Pendant Necklace
Located in Antwerpen, BE
carat. The double cluster design of this pendant showcases the round-shape diamonds arranged in a halo
Category

2010s Belgian Modern Pendant Necklaces

Materials

Diamond, 18k Gold, White Gold

18k Yellow And White Gold Ring Diamonds Black Onyx
Located in New York, NY
. Surrounding each onyx square is a halo of shimmering white diamonds, totaling approximately 0.40 carats in
Category

2010s American Signet Rings

Materials

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

Sterling Silver 1/2 Ct White and Treated Blue Diamond Multi Level Cocktail Ring
Located in New York, NY
, this design features a square center cluster of round cut, color treated, blue diamonds. A halo of
Category

21st Century and Contemporary Indian Contemporary Fashion Rings

Materials

Blue Diamond, White Diamond, Diamond, Sterling Silver

10.65 Carat Pave Set 14K Gold Diamond Tennis Bracelet with Cluster Set Links
By Sebastian Bernard
Located in Los Angeles, CA
Pave Set Clusters within a halo. Each square size is equivalent to a 1.5 Ct diamond creating the look
Category

2010s American Tennis Bracelets

Materials

Diamond, 14k Gold

Natural diamond Ring 0.55 cts 18KT Yellow Gold Designer Statement Ring
Located in Antwerpen, BE
Indulge in the extraordinary allure of our Dazzling Baguette and Round-Cut Diamond Cluster Ring
Category

2010s Belgian Modern Cocktail Rings

Materials

Diamond, Yellow Gold, 18k Gold

Van Cleef Arpels Invisible-Set Ruby and Diamond Ring
By Van Cleef Arpels
Located in New York, NY
ring showcasing a bold square panel of invisibly-set rubies at its center, framed by a halo of princess
Category

20th Century French Retro Cocktail Rings

Materials

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

Two-Tone 10K Gold 1 1/2 Carat Diamond Bypass Cocktail Ring
Located in New York, NY
diamonds. A bypass halo of round diamonds and rows of diamonds along the band add extra sparkle to this
Category

21st Century and Contemporary Indian Contemporary Fashion Rings

Materials

White Diamond, Diamond, White Gold, Rose Gold, 10k Gold

Emerald Ring Vintage 14k Gold Diamond
Located in Beverly Hills, CA
An emerald ring crafted of 14k gold, features diamonds.
 At the center staged a square shape
Category

Mid-20th Century Solitaire Rings

Materials

Diamond, Emerald, 14k Gold

French Art Deco Three-Stone Diamond and Ruby Ring Platinum Yellow Gold
Located in London, GB
halo of 32 meticulously calibrated square-cut rubies, adding a radiant pink touch to the design. The
Category

Early 20th Century French Art Deco Three-Stone Rings

Materials

Diamond, Ruby, Yellow Gold, Platinum

Vintage 18kt Gold Ring with Diamonds and Blue Sapphires
Located in Aventura, FL
. Surrounding the diamonds is a striking halo of square cut Blue Sapphires, which enhance the ring's allure with
Category

20th Century Engagement Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Gold, Yellow Gold

1.00 Carat Diamond Sapphire Opal Yellow Gold Silver Dangle Earrings
Located in Stamford, CT
Vintage opal, diamond and sapphire dangle earrings. Pear shaped ovals with halo's of round diamonds
Category

Early 20th Century Dangle Earrings

Materials

Diamond, Opal, Sapphire, Gold, 14k Gold, Yellow Gold, Silver, Gold Plate

Natural Diamond 1.06 Carats 18KT White Gold Duo Cluster Statement Ring
Located in Antwerpen, BE
brilliance and artistry. Dazzling Baguette and round-cut diamonds form a spectacular cluster in this
Category

2010s Belgian Art Deco Cluster Rings

Materials

Diamond, White Gold, 18k Gold

Ruby Diamond Bangle Bracelet
Located in Sausalito, CA
. the bangle has a channel in the center with square cut rubies streaming down with round diamonds
Category

Late 20th Century Clamper Bracelets

1.37 Carat Diamond and Platinum Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
) 1.01 Ct Old European cut diamond bezel set to the center of a halo design. The square cut halo style
Category

Vintage 1920s Unknown Cocktail Rings

Materials

Diamond, Platinum

Fancy yellow diamond ring 18KT diamond ring engagement diamond ring
Located in Jupiter, FL
Cut:Round Brilliant NATURAL YELLOW DIAMOND(S) Carat:0.60ct Clarity/Color: VS-SI/FANCY YELLOW Cut: Square
Category

21st Century and Contemporary Engagement Rings

18k Yellow Gold Emerald and Diamond Ring
Located in Beverly Hills, CA
. Enhancing the emerald are 56 square and round brilliant cut diamonds totaling 3.60 carats, with F-G color
Category

Vintage 1970s Engagement Rings

Materials

Diamond, Emerald, Gold, 18k Gold, Yellow Gold

Robert Procop Platinum Tsavorite Garnet Diamond Ring
By Robert Procop
Located in Palm Beach, FL
Robert Procop. Tsavorite garnet surrounded by twenty-two round brilliant-cut diamonds in a halo design
Category

2010s American Cocktail Rings

Materials

Diamond, Garnet, Tsavorite, White Gold, Platinum

Artisan Tanzanite And Diamond Cocktail Ring 18K White Gold
By Artisan NYC
Located in New York, NY
Gold: 4.623g Gemstone Details Square Tanzanite: 5.94ct Pear and Round Diamonds: 1.90ct total Product
Category

21st Century and Contemporary Indian Artisan Engagement Rings

Materials

Diamond, Tanzanite, 18k Gold, White Gold

Emerald Diamond Gold Cocktail Ring
Located in Beverly Hills, CA
emerald with lovely green color. It is accented by 1.80 carats of round brilliant-cut diamonds which halo
Category

21st Century and Contemporary American Cocktail Rings

Materials

Diamond, Emerald, Gold, 18k Gold, Yellow Gold

Platinum Target Ring with 1.26 Cts Diamonds and Sapphires
Located in Aventura, FL
. The center stone is framed by a halo of square-cut blue sapphires totaling approximately 0.60 carats
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Diamond, Sapphire, Platinum

Ruby and Diamond Tennis Bracelet Statement 18K Yellow Gold
Located in Bangkok, TH
a seamless ribbon of vivid color. Surrounding the rubies, a delicate halo of brilliant-cut diamonds
Category

2010s Thai Modern Tennis Bracelets

Materials

White Diamond, Ruby, 18k Gold, Yellow Gold

18K Yellow Gold Sapphire, Diamond, Ruby Pearl Necklace
Located in Great Neck Plaza, NY
7.00-carat oval-cut sapphire framed by a halo of round brilliant diamonds. This luxurious piece
Category

Vintage 1980s Choker Necklaces

Materials

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

Pave Amethyst, Diamond and Multi-Gemstone Cocktail Ring 18 Karat White Gold
Located in Scottsdale, AZ
the side of the ring, surrounded by a pave halo of white diamonds (G-H in color, VS-SI in clarity
Category

21st Century and Contemporary Unknown Contemporary Cocktail Rings

Materials

Multi-gemstone, Diamond, Amethyst, White Gold, 18k Gold, Gold

Vintage 0.70ct Diamond and Sapphire Target Ring, c.1960s
Located in London, GB
square baguette cut sapphires, totalling 0.40 carats. A second halo of round brilliant cut diamonds
Category

Vintage 1960s European Art Deco Cluster Rings

Materials

Diamond, Sapphire, Platinum

Mid-Century 18K White Gold Emerald Diamond Daisy Cluster Ring
Located in MONTMORENCY, FR
‰) Center Gem: 1 × Square-cut Emerald, ~0.50 ct Accent Gems: 24 × Round Brilliant Diamonds, ~0.90 ct total
Category

Mid-20th Century French Post-War Cluster Rings

Materials

Diamond, Emerald, White Gold

Spectra Fine Jewelry Invisibly-set Diamond Necklace
By Spectra Fine Jewelry
Located in New York, NY
pear-shape pavé diamond halos. The pendants are suspended from seemingly square step-cut diamonds
Category

21st Century and Contemporary American Modern More Necklaces

Materials

Diamond, 18k Gold, White Gold

Princess Cut engagement diamond ring 18KT white gold
Located in Boca Raton, FL
Complex diamond ring with princess cut diamond in center and pave set diamonds in doubke halo, made
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, 18k Gold

AGL Cert. 4.45 Carat Vivid Green Colombian Emerald Ring in 18K Gold
Located in Miami, FL
with diamond pavé band and hidden halo in 18K yellow gold. The stone is loose and can be made in
Category

21st Century and Contemporary Modern Solitaire Rings

Materials

Diamond, Emerald, Gold, 18k Gold, Yellow Gold

Contemporary Art Deco Revival Diamond Lavalier Necklace
Located in New York, NY
. The yellow round diamonds are set with prongs in square yellow gold bezels, making the diamonds look
Category

21st Century and Contemporary American Drop Necklaces

Materials

Diamond, 18k Gold

GIA Certified 3.26 Carat Light Greenish Yellow VS2 Clarity Diamond
Located in บางรัก, TH
impressive diamond, measuring around 9.5-10 mm in diameter for a round cut. This carat weight signifies a
Category

2010s Asian Loose Gemstones

Materials

Diamond

【Crown Radiance】16.4mm South Sea Pearl Diamond 18K White Gold Pendant
Located in New York, NY
with an exquisite smooth surface and radiant glow. The pearl is embraced within a square diamond halo
Category

21st Century and Contemporary Japanese Pendant Necklaces

Materials

Diamond, South Sea Pearl, White Gold

【Sculpted Geometry】Diamond Frame South Sea Pearl Ring, 18k White Gold
Located in New York, NY
a square halo of diamonds. The contrast between the soft curves of the pearl and the crisp geometry
Category

21st Century and Contemporary Japanese Cocktail Rings

Materials

Diamond, South Sea Pearl, White Gold

GIA Certified 0.20 Carat Fancy Gray VS1 Clarity Diamond
Located in บางรัก, TH
unique and refined. Our cushion shaped diamond is a popular cut known for its rounded corners and soft
Category

2010s Asian Loose Gemstones

Materials

Diamond

0.87 Carat Diamond and Platinum Ring - Art Deco Style
Located in Jesmond, Newcastle Upon Tyne
diamond is encircled with sixteen Old European round cut diamonds, pavé set in a square frame. The tiered
Category

Vintage 1910s Unknown Art Deco Engagement Rings

Materials

Diamond, Platinum

GIA Certified 0.55 Carat Faint Pink SI2 Clarity Diamond
Located in บางรัก, TH
square or rectangular shape with rounded corners, resembling the soft, pillow like shape from which it
Category

2010s Asian Loose Gemstones

Materials

Diamond

GIA Certified 1.11 Carat Fancy Yellow Green SI2 Clarity Diamond
Located in บางรัก, TH
features of both round and emerald cuts. This hybrid cut features a rectangular or square shape with
Category

2010s Asian Loose Gemstones

Materials

Diamond

Leitão Irmão Mid-Century Emerald Diamond Cocktail Ring Platinum 1950s-1960s
Located in Lisbon, PT
design centres on a round brilliant-cut diamond with approximately 1.20 carats, framed by a pair of
Category

Mid-20th Century Portuguese Modern Cocktail Rings

Materials

Diamond, Emerald, Platinum

GIA Certified 1.33 Carat S - T Colour VVS2 Clarity Diamond
Located in บางรัก, TH
. Our cushion shape diamond is a blend of a square and round shape, featuring rounded corners and larger
Category

2010s Asian Loose Gemstones

Materials

Diamond

8.23 Carat Colombian Emerald Diamond 18K Gold Mens Ring GRS Certified
Located in Miami, FL
x 8.49mm with minor oil treatment, surrounded by round brilliant diamonds totaling 0.40 carats
Category

21st Century and Contemporary Art Deco Band Rings

Materials

Emerald, Diamond, Yellow Gold, White Gold, 18k Gold, Gold

GIA Certified 3.01 Carat I-VS1 Asscher Cut Diamond Ring
By Diana M. Jewels
Located in New York, NY
1.40 carats natural round brilliant cut diamonds. • Style-Double Halo Ring
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, Platinum

14K White Gold Diamond and Sapphire Engagement Ring Size 8.25 #22324
Located in Washington Depot, CT
features one square emerald cut natural blue sapphire with 80 sparkling diamonds (78 round cut & 2 trillion
Category

20th Century Contemporary Engagement Rings

Materials

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

GIA Certified 0.30 Carat Fancy Gray Green VS2 Clarity Diamond
Located in บางรัก, TH
that combines the elegance of a square or rectangular shape with rounded corners, resembling a pillow
Category

2010s Asian Loose Gemstones

Materials

Diamond

GIA Certified 0.36 Carat Fancy Pink Brown VS1 Clarity Diamond
Located in บางรัก, TH
brilliance and fire. The cut features a square or rectangular outline, with a rounded center, giving it a
Category

2010s Asian Loose Gemstones

Materials

Diamond

GIA Certified 0.70 Carat Fancy Green Yellow SI1 Clarity Diamond
Located in บางรัก, TH
diamond is a timeless and elegant cut that blends the classic round shape with the soft, rounded corners
Category

2010s Asian Loose Gemstones

Materials

Diamond

Antique Art Deco Platinum Old European Diamond and Sapphire Stud Dangle Earrings
Located in Houston, TX
900 Platinum with: Two (2) round brilliant cut natural diamonds: Measurements: 2.70mm - 2.80mm in
Category

21st Century and Contemporary Unknown Dangle Earrings

Materials

Diamond, Sapphire, Platinum

Diamond Engagement Ring with Matching Ring Jacket, 14k White Gold
Located in Honolulu, HI
square diamond center totaling approximately 0.40 carats and is surrounded by a 16 round diamond halo
Category

21st Century and Contemporary Unknown Modern Engagement Rings

Materials

Diamond, 14k Gold, White Gold

【Crown Radiance】Emerald Crown Aurora South Sea Pearl Diamonds Earrings
Located in New York, NY
green hue of the emeralds is perfectly complemented by a halo of sparkling diamonds, adding brilliance
Category

21st Century and Contemporary Japanese Drop Earrings

Materials

Diamond, South Sea Pearl, Emerald, White Gold

.60 Carat Diamond Sapphire White Gold Knot Ring
Located in Stamford, CT
and a halo 6 round sapphires in a 14k white gold top and 14k yellow gold shank. 1 square Ascher cut
Category

Late 20th Century Cluster Rings

Materials

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

Rectangle Emerald Cut Blue Aquamarine Diamond Art Deco Style White Gold Ring
By Unbranded
Located in Oakton, VA
radiates from within a sparkling halo of bright white round brilliant cut diamonds punctuated east and west
Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Aquamarine, Diamond, 14k Gold, White Gold

9.33 Carat Blue Topaz Diamond 14 Karat White Gold Engagement Ring
By Roshe Jewels
Located in Los Angeles, CA
Blue Topaz and its surrounded by a halo of 28 Round Cut Diamonds that weigh 0.39 Carats. The total
Category

21st Century and Contemporary American Contemporary Cocktail Rings

Materials

Topaz, Diamond, Blue Topaz, 14k Gold, White Gold

1.94 Carat Pear Pink Sapphire Diamond Pendant Necklace, 18K White Gold By Tamir
By Tamir
Located in Beverly Hills, CA
: Square cut pink sapphires, 0.58 carats total weight Accent stones: Round brilliant diamonds, 0.25 carats
Category

21st Century and Contemporary American Contemporary Pendant Necklaces

Materials

Diamond, White Diamond, Multi-gemstone, Pink Sapphire, 18k Gold, White Gold

Art Deco Emerald Pearl and Diamond Lavalier Necklace
Located in London, GB
round faceted old cut diamond which sits proud amidst a circulating halo of square calibrated emeralds
Category

20th Century Art Deco Pendant Necklaces

Materials

Diamond, Emerald, Pearl, Gold, 18k Gold, Yellow Gold, Platinum

Art Deco Platinum Drop Earrings Old European Cushion Cut Diamonds Estate Jewelry
Located in Beverly Hills, CA
top section accented with smaller round diamonds. Below it hangs an open tear-drop shaped halo with a
Category

Early 20th Century Unknown Art Deco Drop Earrings

Materials

Diamond, Platinum

Natural Diamond 0.53 cts 18KT Rose Gold Cluster Pendant
Located in Antwerpen, BE
elegance. The centerpiece of this stunning piece is its square cluster halo design, which is meticulously
Category

2010s Belgian Modern Pendant Necklaces

Materials

Diamond, 18k Gold, Rose Gold

GIA Certified 2.00 Carat Sapphire Diamond White Gold Bracelet
Located in Stamford, CT
sapphires and round diamonds. A staggering 330 stones adorn this Art Deco style 18k white gold bracelet. It
Category

21st Century and Contemporary Tennis Bracelets

Materials

Diamond, Sapphire, Gold, 18k Gold, White Gold

GIA Certified 2.00 Carat Fancy Brownish Purplish Pink SI1 Clarity Diamond
Located in บางรัก, TH
cushion shaped diamond is a stunning and classic diamond known for its soft, rounded corners and square or
Category

2010s Asian Loose Gemstones

Materials

Diamond

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Round Diamond In Square Halo For Sale on 1stDibs

You are likely to find exactly the round diamond in square halo you’re looking for on 1stDibs, as there is a broad range for sale. Frequently made of gold, white gold and 18k gold, this item was constructed with great care. You can easily find a 62 antique edition and 207 modern creations to choose from as well. Finding the perfect round diamond in square halo may mean sifting through those created during different time periods — you can find an early version that dates to the 20th 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. Finding an appealing round diamond in square halo — no matter the origin — is easy, but Sebastian Bernard, Diamond Stars Jewelry, Inc. and Peter Suchy each produced a popular version that is worth a look. 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 square cut and cushion cut alternatives. Most of our round diamond in square halo for sale are for women, but there are 74 pieces available to browse for men.

How Much is a Round Diamond In Square Halo?

On average, a round diamond in square halo at 1stDibs sells for $3,743, while they’re typically $180 on the low end and $260,365 for the highest priced versions of this item.

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.