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1 Carat Old Mine Diamond

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Vintage 1 Carat F Color Engagement Ring. GIA Old Mine Diamond Cluster Platinum
Vintage 1 Carat F Color Engagement Ring. GIA Old Mine Diamond Cluster Platinum

Vintage 1 Carat F Color Engagement Ring. GIA Old Mine Diamond Cluster Platinum

Located in New York, NY

Stone: Diamond Secondary Stone Carat: Approx. 0.70-Carats Secondary Stone Cut: Old Mine Cut Jewelry Type

Category

21st Century and Contemporary Art Deco Engagement Rings

Materials

Diamond, Platinum

Emilio Jewelry Gia Certified 38.85 Carat Old Mine Diamond Necklace
Emilio Jewelry Gia Certified 38.85 Carat Old Mine Diamond Necklace

Emilio Jewelry Gia Certified 38.85 Carat Old Mine Diamond Necklace

By Emilio!

Located in New York, NY

mine cut Gia certified diamond in this necklace layout. Each diamond is Gia Certified. Allow Emilio

Category

21st Century and Contemporary Choker Necklaces

Materials

Diamond

Peter Suchy 1.82 Carat Old Mine Diamond Platinum Engagement Ring
Peter Suchy 1.82 Carat Old Mine Diamond Platinum Engagement Ring

Peter Suchy 1.82 Carat Old Mine Diamond Platinum Engagement Ring

By Peter Suchy

Located in Stamford, CT

Peter Suchy 1.82 Carat Old Mine Diamond Platinum Engagement Ring is a timeless symbol of love and

Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

6 Carat Old Mine Platinum Solitaire Diamond Drop Earrings
6 Carat Old Mine Platinum Solitaire Diamond Drop Earrings

6 Carat Old Mine Platinum Solitaire Diamond Drop Earrings

Located in Chicago, IL

-cut diamond weighing 2.97 carats, color Top (F), clarity VSI 1 brilliant-cut diamond weighing 3.03

Category

Vintage 1940s British Art Deco Drop Earrings

Materials

Diamond, White Diamond, Platinum

Antique Victorian 2.50 Carat Old Mine Cut Diamond Dangle Earrings
Antique Victorian 2.50 Carat Old Mine Cut Diamond Dangle Earrings

Antique Victorian 2.50 Carat Old Mine Cut Diamond Dangle Earrings

Located in New York, NY

Finely crafted in platinum and silver over gold with 2 Old Mine cut Diamonds weighing approximately

Category

Antique Late 19th Century Victorian Dangle Earrings

Materials

Diamond, Gold, Platinum, Silver

Old Mine Diamond & Sapphire Ring
Old Mine Diamond & Sapphire Ring

Old Mine Diamond & Sapphire Ring

Located in New York, NY

Old Mine Diamond & Sapphire Target Ring 1 central approximately 2.16 carats old mind diamond

Category

Vintage 1980s Cocktail Rings

Materials

Diamond, Sapphire, Platinum

3.00 Carats Old Mine Cut Diamond Drop Hoop Earrings
3.00 Carats Old Mine Cut Diamond Drop Hoop Earrings

3.00 Carats Old Mine Cut Diamond Drop Hoop Earrings

Located in Chicago, IL

Elevate your collection with these Old Mine Cut Diamond Drop Hoop Earrings, showcasing 3.01 carats

Category

21st Century and Contemporary Contemporary Drop Earrings

Materials

Diamond, Gold, 14k Gold, Yellow Gold

.75 Carat Old Mine Diamond White Gold Unisex Gypsy Ring
.75 Carat Old Mine Diamond White Gold Unisex Gypsy Ring

.75 Carat Old Mine Diamond White Gold Unisex Gypsy Ring

Located in Stamford, CT

two old mine cut side diamonds that have a total carat weight of .16cts. This ring serves as a

Category

21st Century and Contemporary Three-Stone Rings

Materials

Diamond, Gold, 14k Gold, White Gold

.47 Carat Old Mine Diamond 18k White Gold Engagement Ring
.47 Carat Old Mine Diamond 18k White Gold Engagement Ring

.47 Carat Old Mine Diamond 18k White Gold Engagement Ring

Located in Stamford, CT

features a captivating approximately 0.47 carat Old Mine cut diamond, celebrated for its hand-cut charm

Category

Early 20th Century Engagement Rings

Materials

Diamond, Gold, 18k Gold, White Gold

Antique Edwardian 1910s 3.20 Carat Old Mine Cut Diamonds Ring
Antique Edwardian 1910s 3.20 Carat Old Mine Cut Diamonds Ring

Antique Edwardian 1910s 3.20 Carat Old Mine Cut Diamonds Ring

Located in New York, NY

approximately 1.90 carats, accented by 6 smaller Old Mine cut Diamonds weighing a total of approximately 1.30

Category

Vintage 1910s Edwardian Band Rings

Materials

Diamond, Platinum

0.55 Carat Old Mine Cut Diamond Gypsy Engagement Ring
0.55 Carat Old Mine Cut Diamond Gypsy Engagement Ring

0.55 Carat Old Mine Cut Diamond Gypsy Engagement Ring

By Bracken Jewelers

Located in Santa Monica, CA

Old mine cut diamond gypsy engagement ring by Bracken Jewelers. The 0.55 carat antique cut diamond

Category

2010s American Modern Engagement Rings

Materials

Diamond, 22k Gold, Yellow Gold

Antique Edwardian 1910s 2.80 Carat Old Mine Cut Diamond Brooch
Antique Edwardian 1910s 2.80 Carat Old Mine Cut Diamond Brooch

Antique Edwardian 1910s 2.80 Carat Old Mine Cut Diamond Brooch

Located in New York, NY

Finely crafted in platinum and 18k yellow gold with Old Mine cut Diamonds weighing a total of

Category

Vintage 1910s Edwardian Brooches

Materials

Diamond, 18k Gold, Platinum

Vintage GIA 1.28 Carat Old Mine Brilliant Diamond Engagement Ring
Vintage GIA 1.28 Carat Old Mine Brilliant Diamond Engagement Ring

Vintage GIA 1.28 Carat Old Mine Brilliant Diamond Engagement Ring

Located in New York, NY

old mine brilliant cut diamond that weighs 1.28ct. graded G color with VS2 clarity. The center diamond

Category

Early 20th Century Engagement Rings

Materials

Diamond, Platinum

Old Mine-cut Diamond Pendant Earrings
Old Mine-cut Diamond Pendant Earrings

Old Mine-cut Diamond Pendant Earrings

Located in New York, NY

-topped 18K gold. Set with 96 old mine-cut diamonds, with an approximate total weight of 13.00 carats

Category

Antique Late 19th Century Drop Earrings

Materials

Diamond, Gold, 18k Gold, Yellow Gold, Silver

Antique Victorian 1.20 Carat Old Mine Cut Diamond Engagement Ring
Antique Victorian 1.20 Carat Old Mine Cut Diamond Engagement Ring

Antique Victorian 1.20 Carat Old Mine Cut Diamond Engagement Ring

Located in New York, NY

Finely crafted in 14k yellow gold and platinum with an Old Mine cut Diamond weighing approximately

Category

Antique Late 19th Century Victorian Engagement Rings

Materials

Diamond, 14k Gold, Platinum

Peter Suchy EGL 1.35 Carat Old Mine Round Diamond Platinum Engagement Ring
Peter Suchy EGL 1.35 Carat Old Mine Round Diamond Platinum Engagement Ring

Peter Suchy EGL 1.35 Carat Old Mine Round Diamond Platinum Engagement Ring

By Peter Suchy

Located in Stamford, CT

hand engraved in the Peter Suchy workshop for these diamonds. 1 round old mine cut diamond total

Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Old Mine-cut Diamond Cross Brooch
Old Mine-cut Diamond Cross Brooch

Old Mine-cut Diamond Cross Brooch

Located in New York, NY

(weighing approximately 1.60 carats); 218 old mine-cut diamonds (approximate total weight 12.70 carats

Category

Antique Late 19th Century Victorian Brooches

Materials

Diamond, Gold, Silver

Antique Art Deco 1920s 1.75 Carat Old Mine Cut Diamond Engagement Ring
Antique Art Deco 1920s 1.75 Carat Old Mine Cut Diamond Engagement Ring

Antique Art Deco 1920s 1.75 Carat Old Mine Cut Diamond Engagement Ring

Located in New York, NY

Finely crafted in platinum with an Old Mine cut Diamond at the center weighing approximately 1.75

Category

Vintage 1920s Art Deco Engagement Rings

Materials

Diamond, Platinum

Antique Art Deco 1930s 1.47 Carat Old Mine Cut Diamond Engagement Ring
Antique Art Deco 1930s 1.47 Carat Old Mine Cut Diamond Engagement Ring

Antique Art Deco 1930s 1.47 Carat Old Mine Cut Diamond Engagement Ring

Located in New York, NY

Finely crafted in platinum with an Old Mine cut center Diamond weighing 1.47 carat, J color, VS

Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, Platinum

Antique Art Deco 1930s 1.03 Carat Old Mine Cut Diamond Engagement Ring
Antique Art Deco 1930s 1.03 Carat Old Mine Cut Diamond Engagement Ring

Antique Art Deco 1930s 1.03 Carat Old Mine Cut Diamond Engagement Ring

Located in New York, NY

Finely crafted in platinum with a GIA certified Old Mine cut Diamond weighing 1.03 carats, F color

Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, Platinum

Antique Art Deco 1930s 2.50 Carat Old Mine Cut Diamond Engagement Ring
Antique Art Deco 1930s 2.50 Carat Old Mine Cut Diamond Engagement Ring

Antique Art Deco 1930s 2.50 Carat Old Mine Cut Diamond Engagement Ring

Located in New York, NY

Finely crafted in platinum with a GIA certified Old Mine cut Diamond weighing 2.50 carats, I color

Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, Platinum

Antique Art Deco 1930s 4.01 Carat Old Mine Cut Diamond Engagement Ring
Antique Art Deco 1930s 4.01 Carat Old Mine Cut Diamond Engagement Ring

Antique Art Deco 1930s 4.01 Carat Old Mine Cut Diamond Engagement Ring

Located in New York, NY

Finely crafted in platinum with a GIA certified Old Mine cut Diamond weighing 4.01 carats, L color

Category

Vintage 1930s Art Deco Engagement Rings

Materials

Diamond, Platinum

Antique Enamel 1 carat Old Mine Cut Diamond Gold Pendant
Antique Enamel 1 carat Old Mine Cut Diamond Gold Pendant

Antique Enamel 1 carat Old Mine Cut Diamond Gold Pendant

Located in Cairo, EG

floral centeted with old mine cut diamond estimate 1 carat flanked with old mine diamonds H color white

Category

Antique Early 1900s Pendant Necklaces

.50 Carat Old Mine Cut Diamond Art Deco Gold Engagement Ring
.50 Carat Old Mine Cut Diamond Art Deco Gold Engagement Ring

.50 Carat Old Mine Cut Diamond Art Deco Gold Engagement Ring

Located in Stamford, CT

18k white gold engraved setting. 1 old mine cut diamond, approx. total weight .50cts, H, SI2 Size

Category

Early 20th Century Engagement Rings

Materials

Diamond, 18k Gold, White Gold, Gold

Vintage 1960s 1.50 Carat Old Mine Cut Diamond Three-Stone X ring
Vintage 1960s 1.50 Carat Old Mine Cut Diamond Three-Stone X ring

Vintage 1960s 1.50 Carat Old Mine Cut Diamond Three-Stone X ring

Located in New York, NY

Finely crafted in 18k yellow gold and platinum with 3 Old Mine cut Diamonds weighing approximately

Category

Vintage 1960s Band Rings

Materials

Diamond, 18k Gold

Edwardian Old Mine Diamond Navette Pendant Necklace
Edwardian Old Mine Diamond Navette Pendant Necklace

Edwardian Old Mine Diamond Navette Pendant Necklace

Located in beverly hills, CA

seven near-colorless old mine cut diamonds weigh approximately 1.05 carats in total, adding timeless

Category

Antique Early 19th Century Edwardian Pendant Necklaces

Materials

Diamond, White Gold

Antique Art Deco 1920s 0.80 Carat Old Mine Cut Diamond Engagement Ring
Antique Art Deco 1920s 0.80 Carat Old Mine Cut Diamond Engagement Ring

Antique Art Deco 1920s 0.80 Carat Old Mine Cut Diamond Engagement Ring

Located in New York, NY

Finely crafted in platinum with an Old Mine cut Diamond at the center weighing approximately 0.80

Category

Vintage 1920s Art Deco Engagement Rings

Materials

Diamond, Platinum

HRD Certified 9.56 Carat Old Mine Cut Diamond Necklace In 18K White Gold.
HRD Certified 9.56 Carat Old Mine Cut Diamond Necklace In 18K White Gold.

HRD Certified 9.56 Carat Old Mine Cut Diamond Necklace In 18K White Gold.

By MOGULDIAM INC

Located in New York, NY

elegance and precision to honor the unique beauty of the center 9.56 carat old mine cut diamond

Category

2010s American Pendant Necklaces

Materials

Diamond, White Gold

.82 Carat Old Mine Brilliant Cut Diamond Gold Art Deco Engagement Ring
.82 Carat Old Mine Brilliant Cut Diamond Gold Art Deco Engagement Ring

.82 Carat Old Mine Brilliant Cut Diamond Gold Art Deco Engagement Ring

Located in Stamford, CT

, echoing the grandiosity of the 1930s. 1 old mine brilliant cut diamond, approx. total weight .82cts, I

Category

Early 20th Century Engagement Rings

Materials

Diamond, 18k Gold, White Gold, Gold

Antique Art Deco 1920s 2.50 Carat Old Mine Cut Diamond Dinner Ring
Antique Art Deco 1920s 2.50 Carat Old Mine Cut Diamond Dinner Ring

Antique Art Deco 1920s 2.50 Carat Old Mine Cut Diamond Dinner Ring

Located in New York, NY

Finely crafted in platinum with an Old Mine cut center Diamond weighing approximately 2.50 carat, O

Category

Vintage 1920s Art Deco Cocktail Rings

Materials

Diamond, Sapphire, Platinum

EGL Certified 2.61 Carat Old Mine Diamond Yellow Gold Bezel Set Stud Earrings
EGL Certified 2.61 Carat Old Mine Diamond Yellow Gold Bezel Set Stud Earrings

EGL Certified 2.61 Carat Old Mine Diamond Yellow Gold Bezel Set Stud Earrings

Located in Stamford, CT

Cut Diamond Approx. Total Weight 1.46 carats L-M, SI2 EGL Cert. US400120263D 1 Old Mine Cut Diamond

Category

21st Century and Contemporary Stud Earrings

Materials

Diamond, Gold, 18k Gold, Yellow Gold

Antique 4.97 Carats Total Old Mine Cushion Cut Diamond Dangle Earrings in Silver
Antique 4.97 Carats Total Old Mine Cushion Cut Diamond Dangle Earrings in Silver

Antique 4.97 Carats Total Old Mine Cushion Cut Diamond Dangle Earrings in Silver

Located in New York, NY

two smaller old European cut diamonds weighing 0.36 carat total. Made with silver over yellow gold, 1

Category

Antique Late 19th Century Unknown Dangle Earrings

Materials

Diamond, 14k Gold, Silver

18 Karat Yellow Gold Old Mine Diamond Stud Earrings Together 2 Carat
18 Karat Yellow Gold Old Mine Diamond Stud Earrings Together 2 Carat

18 Karat Yellow Gold Old Mine Diamond Stud Earrings Together 2 Carat

Located in Antwerp, BE

Gorgeous 18kt Yellow Gold Diamond Stud Earrings Together 2 ct. Diamonds: 2 Old Mine cut diamonds 2

Category

20th Century European Artisan Stud Earrings

Materials

Diamond, Yellow Gold

EGL Certified 1.12 Carat Old Mine Diamond Two Tone Gold Engagement Ring
EGL Certified 1.12 Carat Old Mine Diamond Two Tone Gold Engagement Ring

EGL Certified 1.12 Carat Old Mine Diamond Two Tone Gold Engagement Ring

Located in Stamford, CT

mesmerizing brilliance of the 1.12-carat old mine diamond is set against a stunning backdrop of luxurious two

Category

Early 20th Century Engagement Rings

Materials

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

Art Deco Old Mine Cut Diamond and 15 Carat Gold Solitaire Band
Art Deco Old Mine Cut Diamond and 15 Carat Gold Solitaire Band

Art Deco Old Mine Cut Diamond and 15 Carat Gold Solitaire Band

Located in Chipping Campden, GB

This Old Mine cut diamond solitaire is simply stunning. The old mine cut diamond measures approx

Category

Vintage 1910s British Art Deco Solitaire Rings

Materials

Diamond, Gold

Peter Suchy GIA Certified 1.00 Carat Old Mine Diamond Rose Gold Engagement Ring
Peter Suchy GIA Certified 1.00 Carat Old Mine Diamond Rose Gold Engagement Ring

Peter Suchy GIA Certified 1.00 Carat Old Mine Diamond Rose Gold Engagement Ring

By Peter Suchy

Located in Stamford, CT

1.00 carat old mine diamond that is certified by the GIA as light yellow and whose antique cut sparkles

Category

21st Century and Contemporary Wedding Rings

Materials

Diamond, Gold, 18k Gold, Rose Gold

Victorian 18K Gold Old Mine Cut Diamond Ring
Victorian 18K Gold Old Mine Cut Diamond Ring

Victorian 18K Gold Old Mine Cut Diamond Ring

Located in Venice, CA

antique Old Mine Cut diamond that is approximately 0.6 carats. It is a deep diamond that measures 3.5 mm

Category

Antique 1890s Victorian Engagement Rings

Materials

Diamond, Gold, 18k Gold

Victorian Single Diamond Stud Earring Mined .10ct Old Mine Screwback 1880's
Victorian Single Diamond Stud Earring Mined .10ct Old Mine Screwback 1880's

Victorian Single Diamond Stud Earring Mined .10ct Old Mine Screwback 1880's

Located in Dearborn, MI

/Quality 1 Natural Diamond (100% Natural Diamond) .10 Carat Diamond Weight Shape: Old Mine Cut Color

Category

Antique 1880s Victorian Stud Earrings

Materials

Diamond, 14k Gold, Yellow Gold

1.02 Carat Old Mine Cut Diamond Platinum Engagement Ring
1.02 Carat Old Mine Cut Diamond Platinum Engagement Ring

1.02 Carat Old Mine Cut Diamond Platinum Engagement Ring

Located in New York, NY

This stunning platinum ring is set with a sparkling GIA certified old mine brilliant cut diamond

Category

20th Century Engagement Rings

Materials

Diamond, Platinum

GIA 2.50 Carat Old Mine Cut Diamond Engagement Ring
GIA 2.50 Carat Old Mine Cut Diamond Engagement Ring

GIA 2.50 Carat Old Mine Cut Diamond Engagement Ring

Located in New York, NY

Made of platinum, this ring centers a sparkling GIA certified old mine cut diamond that weighs

Category

20th Century Engagement Rings

Materials

Diamond, Platinum

Antique Old Mine Cut 20.16 Carats Diamond Earrings in Gold.
Antique Old Mine Cut 20.16 Carats Diamond Earrings in Gold.

Antique Old Mine Cut 20.16 Carats Diamond Earrings in Gold.

By MOGULDIAM INC

Located in New York, NY

Simply gorgeous! These incredible antique style old European cut diamond dangle earrings are

Category

2010s American Dangle Earrings

Materials

Diamond, Yellow Gold, Silver

Antique Old Mine Cut Diamond Gold Solitaire Ring
Antique Old Mine Cut Diamond Gold Solitaire Ring

Antique Old Mine Cut Diamond Gold Solitaire Ring

Located in Cairo, EG

Antique old mine cut diamond solitaire 14k gold ring centered with 1 old mine cut diamond with an

Category

Antique Early 1900s Russian Art Deco Solitaire Rings

Materials

Diamond, 14k Gold

2.22 Carat Old Mine Cut Diamond Platinum Engagement Ring
2.22 Carat Old Mine Cut Diamond Platinum Engagement Ring

2.22 Carat Old Mine Cut Diamond Platinum Engagement Ring

Located in New York, NY

This stunning platinum ring is centered with a sparkling EGL certified old mine cut diamond that

Category

Early 20th Century Art Deco Engagement Rings

Materials

Diamond, Platinum

Edwardian Platinum Old Mine Cut Diamond Horse Shoe Necklace
Edwardian Platinum Old Mine Cut Diamond Horse Shoe Necklace

Edwardian Platinum Old Mine Cut Diamond Horse Shoe Necklace

Located in Venice, CA

. There is approximately 1.75 carats of diamonds by formula. The fact that they are all Old Mine Cuts

Category

Vintage 1910s Unknown Edwardian Pendant Necklaces

Materials

Diamond, Platinum

Victorian Opal .8 Carat Old Mine Cut Diamond Ring Antique Wedding Engagement
Victorian Opal .8 Carat Old Mine Cut Diamond Ring Antique Wedding Engagement

Victorian Opal .8 Carat Old Mine Cut Diamond Ring Antique Wedding Engagement

Located in New York, NY

Mine Cut Diamonds which total approximately .8 Carats. The jewels are set in 14 Karat Gold. This is

Category

Antique 19th Century Unknown Victorian Wedding Rings

Materials

Diamond, Opal, Gold, 14k Gold, Yellow Gold

0.88 Old Mine Cut Diamond and Platinum Solitaire Style Ring
0.88 Old Mine Cut Diamond and Platinum Solitaire Style Ring

0.88 Old Mine Cut Diamond and Platinum Solitaire Style Ring

Located in Montgomery, AL

diamond in the center. Old Mine cut diamonds are often times similar to the modern cushion cut diamond

Category

Vintage 1920s Art Deco Solitaire Rings

Materials

White Diamond, Platinum

Antique Old Mine Cut Diamond Russian Gold Solitaire Ring
Antique Old Mine Cut Diamond Russian Gold Solitaire Ring

Antique Old Mine Cut Diamond Russian Gold Solitaire Ring

Located in Cairo, EG

of 1 carat diameter 6.40mm×6.70mm flanked with smaller old mine cut diamonds with an estimate weight

Category

Antique 1890s Unknown Solitaire Rings

Materials

Diamond, 14k Gold

Platinum Old Mine Diamond Pendant Necklace Antique Victorian Edwardian
Platinum Old Mine Diamond Pendant Necklace Antique Victorian Edwardian

Platinum Old Mine Diamond Pendant Necklace Antique Victorian Edwardian

Located in New York, NY

. DIAMONDS Central Diamond Old Mine Cut - a sparkling white white jewel of great beauty Approximately 1/5

Category

Antique Late 19th Century Unknown Edwardian Pendant Necklaces

Materials

Diamond, Platinum

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1 Carat Old Mine Diamond For Sale on 1stDibs

On 1stDibs, you can find the most appropriate 1 carat old mine diamond for your needs in our varied inventory. Each design created in this style — which was crafted with great care and often made from Gold, Platinum and 18k Gold — can elevate any look. In our selection of items, you can find a vintage example as well as a contemporary version. Finding the perfect 1 carat old mine 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. A 1 carat old mine diamond from Mark Broumand, Hancocks and Single Stone — each of whom created a beautiful version of this treasured accessory — is worth considering. An old mine cut version of this piece has appeal, but there are also cushion cut and round cut versions for sale. When shopping for a 1 carat old mine diamond, you’ll find that there are less available pieces for unisex or men today than there are for women.

How Much is a 1 Carat Old Mine Diamond?

On average, a 1 carat old mine diamond at 1stDibs sells for $6,501, while they’re typically $378 on the low end and $1,091,830 for the highest priced versions of this item.

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.