What is a star-cut diamond?

A star-cut diamond is a diamond with a certain shape and facet arrangement. Specifically, the style features 86 facets and is a brilliant cut that shows off the sparkle of a diamond. In terms of shape, the cut produces a gemstone that resembles a five-pointed star. On 1stDibs, explore a wide variety of diamond jewelry.

Antique Diamond Star

Star Locket

Edwardian Star

Star Sapphire Ring In Platinum

Victorian Star Pendant

Art Deco Cabochon Sapphire Diamond Ring

Silver Star Brooch

Star Ruby Cabochon

Three Stone Star Ring

Category

1890s British Victorian Antique Diamond Star

Materials

Diamond, Gold

Victorian Diamond and 18 Carat Gold Three-Stone Star Setting Band

$670

Edwardian Diamond and 18 Carat Gold Three-Stone Star Setting Band

Located in Chipping Campden, GB

This gorgeous 18ct gold band holds three diamonds totalling 11pts with the central stone measuring

Category

Early 1900s British Edwardian Antique Diamond Star

Materials

Diamond, Gold

Edwardian Diamond and 18 Carat Gold Three-Stone Star Setting Band

$657

Black Star and Frost Natural Pearl and Diamond Crown Brooch, 1920s

By Black, Starr Frost

Located in Chicago, IL

Circa 1920s Edwardian Black Star and Frost Crown brooch, Platinum top and Yellow Gold backed

Category

1920s American Edwardian Antique Diamond Star

Materials

Diamond, Natural Pearl, 14k Gold, Platinum

Black Star and Frost Natural Pearl and Diamond Crown Brooch, 1920s

$1,050

Antique 18 Carat Yellow Gold Ruby and Diamond 3 Star Ring

Located in Chipping Campden, GB

Antique 18ct Yellow Gold Ruby and Diamond 3 Star Ring wonderful ruby and diamond 3 stone ring on

Category

Early 20th Century Unknown Edwardian Antique Diamond Star

Materials

Diamond, Ruby, Yellow Gold

Antique 18 Carat Yellow Gold Ruby and Diamond 3 Star Ring

$534

Edwardian Diamond and 18 Carat Gold Star Setting Five-Stone Ring

Located in Chipping Campden, GB

Set in this stylish ring are five old mine cut diamonds measuring 35pts in total. The diamonds are

Category

Early 1900s British Edwardian Antique Diamond Star

Materials

Diamond, Gold, 18k Gold

Edwardian Diamond and 18 Carat Gold Star Setting Five-Stone Ring

$657

Edwardian Diamond and 18 Carat Gold Three-Stone Star Setting Ring

Located in Chipping Campden, GB

This gorgeous 18ct gold band holds three diamonds totalling 23pts with the central stone measuring

Category

Early 1900s British Edwardian Antique Diamond Star

Materials

Diamond, Gold, 18k Gold

Edwardian Diamond and 18 Carat Gold Three-Stone Star Setting Ring

$1,218

Art Deco Ruby ans Diamond 18 Carat Gold Star Setting Ring

Located in Chipping Campden, GB

Diamonds are set in star settings. Fully hallmarked in Birmingham, 1910. Ring Size: O or 7 1/4 Width

Category

1910s British Art Deco Antique Diamond Star

Materials

Diamond, Ruby, 18k Gold, Gold

Art Deco Ruby ans Diamond 18 Carat Gold Star Setting Ring

$657

Black Star Frost Edwardian Platinum Gold Diamond and Pearl Hair Combs

Located in Chicago, IL

Circa 1910 Black Star & Frost Platinum top and 14k Hair Comb / Pins, measuring 3 3/4 inches in

Category

1910s American Edwardian Antique Diamond Star

Materials

Diamond, Pearl, Gold, 14k Gold, Platinum

Black Star Frost Edwardian Platinum Gold Diamond and Pearl Hair Combs

$3,150

Antique 18k yellow gold star set diamond ring, Art Deco era

Located in NEWARK, GB

sparkling diamonds set into it in star shaped settings, the diamonds have a lovely twinkle on movement and

Category

Early 20th Century British Victorian Antique Diamond Star

Materials

Diamond, 18k Gold, Yellow Gold

Antique 18k yellow gold star set diamond ring, Art Deco era

$751

18 K Yellow Gold Victorian Star Necklace Pendant/Brooch Pearls Diamonds

Located in Zurich, Zollstrasse

cluster of Pearls to the centre and tapering Pearls to the points of the star and 4 brilliant cut Diamonds

Category

1880s British Victorian Antique Diamond Star

Materials

Diamond, Pearl, Yellow Gold

18 K Yellow Gold Victorian Star Necklace Pendant/Brooch Pearls Diamonds

$5,250

Antique 15ct Yellow Gold, Edwardian Diamond Seed Pearl Star Pendant / Brooch

Located in Brighton, GB

Antique Star Pendant / Brooch 15ct Yellow Gold Circa 1910 *The chain is sold separately

Category

Early 20th Century English Edwardian Antique Diamond Star

Materials

Diamond, Pearl, 15k Gold, Yellow Gold

Antique 15ct Yellow Gold, Edwardian Diamond Seed Pearl Star Pendant / Brooch

$1,745

Victorian French Coral Rose Cut Diamond 18 Karat Gold Star Stud Earrings

Located in Philadelphia, PA

centering a gold star accented by rose cut diamonds Completed by posts and screwbacks With French maker's

Category

Mid-19th Century French Victorian Antique Diamond Star

Materials

Coral, Diamond, White Diamond, Gold, 18k Gold, Yellow Gold

Victorian French Coral Rose Cut Diamond 18 Karat Gold Star Stud Earrings

$925

Edwardian Diamond and 18 Carat Gold Five-Stone Star Setting Ring

Located in Chipping Campden, GB

This gorgeous 18ct gold band holds five diamonds totalling 16pts with the central stone measuring

Category

Early 1900s British Edwardian Antique Diamond Star

Materials

Diamond, Gold, 18k Gold

Edwardian Diamond and 18 Carat Gold Five-Stone Star Setting Ring

$753

Art Deco 6.51 Carat GIA Cert Star Burma Ruby Diamond Platinum Ring

Located in Aspen, CO

The central oval stone, weighing exactly 6.51 cts., is a fine natural unheated star ruby accented

Category

Early 20th Century Unknown Art Deco Antique Diamond Star

Materials

Diamond, Ruby, Platinum

Art Deco 6.51 Carat GIA Cert Star Burma Ruby Diamond Platinum Ring

$12,500

1920s Art Deco Marvelous Diamond Ring in Platinum Black Star and Frost

By Black, Starr Frost

Located in Wailea, HI

1920s Art Deco Marvelous Diamond Ring in Platinum Black Star and Frost One Old European Cut

Category

Early 20th Century Unknown Art Deco Antique Diamond Star

Materials

White Diamond, Platinum

1920s Art Deco Marvelous Diamond Ring in Platinum Black Star and Frost

$16,750

Art Deco Diamond and 18 Carat Gold Three-Stone Star Setting Band

Located in Chipping Campden, GB

This gorgeous 18ct gold band holds three diamonds totalling 17pts. They are bright and have a

Category

1910s British Art Deco Antique Diamond Star

Materials

Diamond, Gold

Art Deco Diamond and 18 Carat Gold Three-Stone Star Setting Band

$534

Art Deco Diamond and 18 Carat Gold Three-Stone Star Setting Band

Located in Chipping Campden, GB

This gorgeous 18ct gold band holds three diamonds totalling 13pts. They are bright and have a

Category

1910s British Art Deco Antique Diamond Star

Materials

Diamond, Gold

Art Deco Diamond and 18 Carat Gold Three-Stone Star Setting Band

$534

Art Deco Diamond and 18 Carat Gold Three-Stone Star Setting Band

Located in Chipping Campden, GB

This gorgeous 18ct gold band holds three diamonds totalling 11pts. They are bright and have a

Category

1910s British Art Deco Antique Diamond Star

Materials

Diamond, Gold

Art Deco Diamond and 18 Carat Gold Three-Stone Star Setting Band

$534

18 Karat Yellow Gold Diamond and Sapphire Star Bezel Gypsy Set Ring

Located in Towson, MD

Mine Cut diamonds L-M color/VS2 Clarity Ring. All the gems are set in star bezels and the ring is a

Category

Early 1900s British Antique Diamond Star

Materials

Diamond, Sapphire, Yellow Gold

18 Karat Yellow Gold Diamond and Sapphire Star Bezel Gypsy Set Ring

$895

Blue Gray Star 8 Carat Sapphire and European Diamond Ring, circa 1950

Located in Laguna Hills, CA

Dynamic Star Sapphire ring is lite up in this blue-gray colored natural and rare gemstone. Circa

Category

19th Century Unknown Modern Antique Diamond Star

Materials

Diamond, Sapphire, 14k Gold, Yellow Gold

Blue Gray Star 8 Carat Sapphire and European Diamond Ring, circa 1950

$2,299

Victorian Old Mine Cut Diamond Blue Enamel 14 Karat Yellow Gold Star Earrings

Located in Philadelphia, PA

accents the edges of the star earrings. Each earring is set with an old mine diamond .36 carat total

Category

19th Century Victorian Antique Diamond Star

Materials

Diamond, 14k Gold

Victorian Old Mine Cut Diamond Blue Enamel 14 Karat Yellow Gold Star Earrings

$925

Antique Ruby and Diamond 18 Carat Yellow Gold Star Set Pinky Ring

Located in London, GB

by star settings, giving a charming celestial touch. The scintillating diamonds come to an estimated

Category

Late 19th Century British Late Victorian Antique Diamond Star

Materials

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

Antique Ruby and Diamond 18 Carat Yellow Gold Star Set Pinky Ring

$527

Victorian Natural Pearl and Diamond Crescent Moon and Star Stick/Tie Pin

Located in London, GB

Antique, Victorian natural pearl and diamond Crescent Moon and Star tie pin set in 15-carat yellow

Category

1880s British Victorian Antique Diamond Star

Materials

Diamond, Natural Pearl, 15k Gold, Yellow Gold

Victorian Natural Pearl and Diamond Crescent Moon and Star Stick/Tie Pin

$369

18ct Yellow Gold Star Set Diamond Single Stone Band Ring, Hallmarked London

Located in Brighton, GB

diamond in a star setting, adding a touch of sparkle and elegance to the piece. The diamond is securely

Category

Early 20th Century English Edwardian Antique Diamond Star

Materials

Diamond, 18k Gold, Yellow Gold

18ct Yellow Gold Star Set Diamond Single Stone Band Ring, Hallmarked London

$1,848

18ct Yellow Gold Edwardian Star Set Diamond Band Ring Hallmarked Birmingham 1902

Located in Brighton, GB

tapered band that is crafted from high-quality yellow gold. The ring is set with a single star-set natural

Category

Early 20th Century English Edwardian Antique Diamond Star

Materials

Diamond, 18k Gold, Yellow Gold

18ct Yellow Gold Edwardian Star Set Diamond Band Ring Hallmarked Birmingham 1902

$1,088

Mennonite Lone Star Quilt

Located in Darnestown, MD

This Mennonite Lone Star quilt could not be richer in color. The deep green background perfectly

Category

1880s American Antique Diamond Star

Materials

Cotton

Mennonite Lone Star Quilt

$2,700

Antique Edwardian Platinum and 14 Karat Rose Gold Star Ruby and Diamond Ring

Located in Towson, MD

ring is for you! The ring contains a center 1.16 carat star ruby in the center set in a 14kt rose gold

Category

Early 1900s Edwardian Antique Diamond Star

Materials

Diamond, Ruby, Rose Gold, Platinum

Antique Edwardian Platinum and 14 Karat Rose Gold Star Ruby and Diamond Ring

$3,595

Victorian 18 Karat Gold Old Cut Diamond Blue Enamel Star Lever-Back Earrings

Located in Vilnius, Vilniaus apskr.

This is a lovely pair of a Victorian star shape lever-back earrings. It is crafted in 18K gold and

Category

Late 19th Century Victorian Antique Diamond Star

Materials

Diamond, Gold, Enamel

Victorian 18 Karat Gold Old Cut Diamond Blue Enamel Star Lever-Back Earrings

$2,901

Antique Victorian 15K Yellow Gold Pearl and Diamond Moon and Star Stick Pin

Located in Staines-Upon-Thames, GB

thing about this Victorian 15K Yellow Gold Moon and Star Stick Pin, is the sparkling old cut diamond

Category

Late 19th Century British Victorian Antique Diamond Star

Materials

Diamond, Pearl, 15k Gold, 9k Gold, Yellow Gold

Antique Victorian 15K Yellow Gold Pearl and Diamond Moon and Star Stick Pin

$650

Art Deco Rose cut Diamond and 18 Carat Gold Four-Stone Star Setting Band

Located in Chipping Campden, GB

This gorgeous 18ct gold band holds four rose cut diamonds totalling 24pts. They are bright and have

Category

1910s British Art Deco Antique Diamond Star

Materials

Diamond, Gold

Art Deco Rose cut Diamond and 18 Carat Gold Four-Stone Star Setting Band

$575

18th Century Georgian 3 TCW Diamond 18K Gold Star Brooch, S.J. Phillips, London

Located in New York, NY

Enchanting 18th Century Georgian period diamond brooch in the shape of a star, retailed by S.J

Category

18th Century English Georgian Antique Diamond Star

Materials

Diamond, Gold, 18k Gold

18th Century Georgian 3 TCW Diamond 18K Gold Star Brooch, S.J. Phillips, London

$5,950

Antique Belle Époque Star Sapphire Cabochon Diamond 14 K Gold Bangle Bracelet

Located in Munich, Bavaria

A lovely lilac coloured star-sapphire cabochon is mounted in a bangle made out of 14 k gold. It is

Category

1890s Belle Époque Antique Diamond Star

Materials

14k Gold

Antique Belle Époque Star Sapphire Cabochon Diamond 14 K Gold Bangle Bracelet

$5,814

Hallmarked B ham 1898 Ruby and Diamond 18 Carat Star-Set 3 Stone Gypsy Ring

Located in Baltimore, MD

18k diamond gypsy ring adorned with 2 cushion cut rubies and 1 center diamond encased in 8 pointed

Category

1890s British Victorian Antique Diamond Star

Materials

Diamond, Ruby, 18k Gold

Hallmarked B ham 1898 Ruby and Diamond 18 Carat Star-Set 3 Stone Gypsy Ring

$1,650

Art Deco Vintage 7.59 Carat Purple Star Sapphire Cocktail Ring

Located in Santa Barbara, CA

A glorious 1920s Art Deco star sapphire cocktail ring. Centered by a 7.59 carat vivid purple

Category

1920s Art Deco Antique Diamond Star

Materials

Diamond, Sapphire, Purple Sapphire, Platinum

Art Deco Vintage 7.59 Carat Purple Star Sapphire Cocktail Ring

$3,000

13 Star Antique American Flag, ca 1895-1926

Located in York County, PA

13 STAR ANTIQUE AMERICAN FLAG WITH A 3-2-3-2-3 CONFIGURATION OF STARS ON AN INDIGO CANTON, SQUARISH

Category

Late 19th Century American Antique Diamond Star

Materials

Wool

13 Star Antique American Flag, ca 1895-1926

13 Star Antique American Flag , Ca 1890-1899

Located in York County, PA

can also be viewed as a diamond of stars, with a star in each corner and a star in the very center. It

Category

1890s American Antique Diamond Star

Materials

Wool

13 Star Antique American Flag , Ca 1890-1899

13 Star Parade Flag, Unusually Large Among Its Known Counterparts

Located in York County, PA

design can also be viewed as a diamond of stars, with a star in each corner and a star in the very centre

Category

19th Century Antique Diamond Star

13 Star Parade Flag, Unusually Large Among Its Known Counterparts

$2,650

Art Deco Brooch Palladium Rose Gold Sapphire Diamond Double Clip Antique

Located in Beverly Hills, CA

An elegant Art Deco brooch made of palladium and featuring star sapphires and diamonds. The brooch

Category

1910s Unknown Antique Diamond Star

Materials

Diamond, Sapphire, Star Sapphire, White Gold, Rose Gold, Palladium

Art Deco Brooch Palladium Rose Gold Sapphire Diamond Double Clip Antique

$12,500

Vintage Art Deco Natural Sapphire Diamond Ring 18k Gold Platinum Cocktail

Located in Torrance, CA

Stylish 2.40ct natural cabochon sapphire & diamond ring crafted in 18k yellow gold & platinum

Category

Early 20th Century Unknown Art Deco Antique Diamond Star

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Star Sapphire, 18k Gold...

Vintage Art Deco Natural Sapphire Diamond Ring 18k Gold Platinum Cocktail

$3,475

French Art Deco Diamond Antique Ring

Located in Poitiers, FR

is set with 5 rose cut diamonds in an openwork star themed motif that is surrounded by calibrated

Category

1920s French Art Deco Antique Diamond Star

Materials

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

French Art Deco Diamond Antique Ring

$1,898

Victorian Diamond 9 Carat Gold Bangle

Located in Chipping Campden, GB

panel holding an old mine cut diamond set in a star setting. Inner Diameter: 58mm Weight: 8.7g

Category

1880s British Victorian Antique Diamond Star

Materials

Diamond, Gold

Victorian Diamond 9 Carat Gold Bangle

$616

Edwardian Diamond and 9 Carat Gold Ring

Located in Chipping Campden, GB

The design of this ring is fabulous! At the centre of the main panel is a small diamond set within

Category

Early 1900s British Edwardian Antique Diamond Star

Materials

Diamond, Gold

Edwardian Diamond and 9 Carat Gold Ring

$383

Victorian Diamond and 15 Carat Gold Locket Pendant

Located in Chipping Campden, GB

The diamond set in a gorgeous star setting at the centre of the locket measures 15pts and adds a

Category

1880s British Victorian Antique Diamond Star

Materials

Diamond, 15k Gold

Victorian Diamond and 15 Carat Gold Locket Pendant

$465

Edwardian Diamond and 9 Carat Gold Gypsy Ring

Located in Chipping Campden, GB

This gorgeous gypsy ring holds a 5pt diamond set within a star setting. The shoulders of the band

Category

Early 1900s British Edwardian Antique Diamond Star

Materials

Diamond, Gold

Edwardian Diamond and 9 Carat Gold Gypsy Ring

$383

Victorian Era, Turquoise and Diamond Locket Pendant

Located in Brisbane City, QLD

silver star. This diamond inset star is surrounded with 86 round and oval cabochon turquoise, likely

Category

19th Century English Victorian Antique Diamond Star

Materials

Diamond, Turquoise, Gold, 18k Gold, Yellow Gold

Victorian Era, Turquoise and Diamond Locket Pendant

$1,880

1870 Victorian Rose Gold Diamond Fob Locket

Located in Lexington, KY

gorgeous and timeless piece of jewelry. At the center, a 0.05ct old mine-cut diamond is star set and

Category

1870s Victorian Antique Diamond Star

Materials

Diamond, 10k Gold, Rose Gold

1870 Victorian Rose Gold Diamond Fob Locket

$1,700

Edwardian Ruby and Diamond 9 Carat Gold Bangle

Located in Chipping Campden, GB

The detailed bangle holds two diamonds and three rubies all set in star settings. The diamond total

Category

Early 1900s British Edwardian Antique Diamond Star

Materials

Diamond, Ruby, Gold

Edwardian Ruby and Diamond 9 Carat Gold Bangle

$807

Art Deco Diamond and 9 Carat Gold Ring

Located in Chipping Campden, GB

The design of this ring is fabulous! At the centre of the main panel is a 10pt diamond set within a

Category

1910s British Art Deco Antique Diamond Star

Materials

Diamond, Gold

Art Deco Diamond and 9 Carat Gold Ring

$438

Cartier Important Art Deco Onyx Diamond Desk Clock

By Cartier

Located in Greenwich, CT

square carved black onyx case highlighted with rose-cut diamonds within star-shaped mounts at each corner

Category

1920s French Art Deco Antique Diamond Star

Materials

White Diamond, 18k Gold

Cartier Important Art Deco Onyx Diamond Desk Clock

$25,000

Victorian Diamond and 15 Carat Gold Heart Detail Brooch

Located in Chipping Campden, GB

This charming god brooch is modelled in 15ct gold with a central heart which holds a 3pt diamond in

Category

1830s British Victorian Antique Diamond Star

Materials

Diamond, 15k Gold

Victorian Diamond and 15 Carat Gold Heart Detail Brooch

$492

Antique Victorian Gold Diamond Pendant or circa 1860 Brooch

Located in Stamford, CT

A star pendant or brooch boasts a central off round diamond sitting nestled in a cluster of rose

Category

1860s Victorian Antique Diamond Star

Materials

Diamond, 15k Gold, Sterling Silver

Antique Victorian Gold Diamond Pendant or circa 1860 Brooch

$4,800

Antique 18K Diamond and Sapphire Gypsy Ring C1900

Located in Baltimore, MD

century is an unusual combination of 3 sapphire stones set in a banner flanking a central star set diamond

Category

Early 1900s British Victorian Antique Diamond Star

Materials

Diamond, Sapphire, 18k Gold

Antique 18K Diamond and Sapphire Gypsy Ring C1900

$950

18K Yellow Gold Etruscan Garnet Pin with Diamond

Located in Lexington, KY

sparkle, this pin also contain .47 ct of diamond laid into a star pattern. The belief that garnet has the

Category

Late 19th Century Antique Diamond Star

Materials

Diamond, Garnet, Gold, 18k Gold, Yellow Gold

18K Yellow Gold Etruscan Garnet Pin with Diamond

$4,850

Edwardian Diamond Platinum and 18 Carat Gold Three-Stone Ring

Located in Chipping Campden, GB

details. The diamonds are set in star settings, the central stone measuring 8pts and the ones either side

Category

1910s British Edwardian Antique Diamond Star

Materials

Diamond, Gold, Platinum

Edwardian Diamond Platinum and 18 Carat Gold Three-Stone Ring

$492

Antique Diamond and 9 Carat Gold Three-Stone Gypsy Ring

Located in Chipping Campden, GB

This classic gypsy ring holds three diamonds which are set in star settings. The central diamond is

Category

Early 1900s British Edwardian Antique Diamond Star

Materials

Diamond, Gold

Antique Diamond and 9 Carat Gold Three-Stone Gypsy Ring

$657

Victorian Ruby and Rose Cut Diamond 18 Carat Gold Ring

Located in Chipping Campden, GB

Diamonds are set in star settings and the shoulders of the ring have fabulous scroll detail. Made in

Category

1830s British Victorian Antique Diamond Star

Materials

Diamond, Ruby, 18k Gold

Victorian Ruby and Rose Cut Diamond 18 Carat Gold Ring

$520

14K Gold Victorian Pearl and Diamond Crescent Moon Pendant

Located in Venice, CA

by an Old Mine Cut diamond. Held in place by a five-prong setting, the diamond represents a star. The

Category

1890s Victorian Antique Diamond Star

Materials

Diamond, Pearl, 14k Gold, Yellow Gold

14K Gold Victorian Pearl and Diamond Crescent Moon Pendant

$550

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Antique Diamond Star For Sale on 1stDibs

On 1stDibs, you can find the most appropriate antique diamond star for your needs in our varied inventory. Each design created in this style — which was crafted with great care and often made from Gold, 18k Gold and Silver — can elevate any look. If you’re looking for an antique diamond star from a specific time period, our collection is diverse and broad-ranging, and you’ll find at least one that dates back to the 18th Century while another version may have been produced as recently as the 20th Century. There have been many well-made iterations of the classic antique diamond star over the years, but those made by Five Star Jewelry, Black, Starr Frost and Marcus Co. are often thought to be among the most beautiful. Today, if you’re looking for an old mine cut version of this piece and are unable to find the perfect match, our selection also includes old european cut and round cut alternatives. When shopping for an antique diamond star, you’ll find that there are less available pieces for unisex or men today than there are for women.

How Much is a Antique Diamond Star?

The price for an antique diamond star starts at $250 and tops out at $85,000 with these brooches, on average, selling for $5,500.

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 rings, vintage engagement rings or Art Deco engagement rings.

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

Questions About Antique Diamond Star

What is a star-cut diamond?
1 Answer
1stDibs ExpertJanuary 23, 2024
A star-cut diamond is a diamond with a certain shape and facet arrangement. Specifically, the style features 86 facets and is a brilliant cut that shows off the sparkle of a diamond. In terms of shape, the cut produces a gemstone that resembles a five-pointed star. On 1stDibs, explore a wide variety of diamond jewelry.