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Cartier Diamond Platinum Three-Stone Ring GIA Certificate
By Cartier
Located in Beverly Hills, CA
Diamond Grading Report dated January 11, 2012). The 4.83-ct diamond is flanked with two trillion cut
Category

Vintage 1980s American Contemporary Engagement Rings

Materials

Diamond, Platinum

14 Karat Yellow and White Gold Diamond Slide Pendant
Located in Washington Depot, CT
diamonds (.11 ct. twt.) set in 14K white gold in the inner circle and 29 yellow stones set in 14K yellow
Category

20th Century Pendant Necklaces

Materials

Diamond, White Gold

Chanel Pearl Diamond Gold Super Star Earrings
By Chanel
Located in Southampton, PA
. Lastly, the inclusion of pearls and ~11ct of diamonds take the design to another level of chicness.
Category

Late 20th Century French Modern More Earrings

Materials

South Sea Pearl, White Diamond, 18k Gold, Yellow Gold

Statement 6.5 ct Emerald cut Emerald and Graduated Diamond Necklace
By Ri Noor
Located in Houston, TX
Significant 6.5 ct Emerald-cut Emerald pendant on a 24-inch, graduated Diamond necklace with 11ct
Category

2010s Pendant Necklaces

Materials

Diamond, Emerald, 18k Gold

18 Karat White Gold Diamond Small Circle Baguette Fancy Ring
Located in Los Angeles, CA
designs ranging from simple to extravagant. 60 Round Diamonds = 1.14 ct 11 Baguette Diamonds = 0.62 ct
Category

2010s American Cocktail Rings

Materials

Diamond, White Diamond, 18k Gold, White Gold

18 Karat White Gold Diamond Small Circle Baguette Fancy Ring
Located in Los Angeles, CA
designs ranging from simple to extravagant. 60 Round Diamonds = 1.14 ct 11 Baguette Diamonds = 0.62 ct
Category

2010s American Cocktail Rings

Materials

Diamond, White Diamond, 18k Gold, White Gold

14 Karat Yellow Gold Peridot Gemstone and Diamond Swirl Ring RM1544P
Located in Southampton, PA
a ~.55CT peridot stone, encircled by ~.11CT of diamonds.
Category

21st Century and Contemporary Band Rings

Materials

Diamond, Yellow Gold

18 Karat White Gold Diamond Medium Baguette Square Pendant Bail Necklace
Located in Los Angeles, CA
= 1.00 ct 11 Baguette Diamonds = 0.55 ct
Category

2010s American Choker Necklaces

Materials

Diamond, White Diamond, 18k Gold, White Gold

Statement 4 ct Emerald Cut Emerald and Graduated Diamond Necklace
By Ri Noor
Located in Houston, TX
Significant 4 ct Emerald-cut Emerald pendant on a 24-inch, 5ct half-graduated Diamond and half
Category

2010s Pendant Necklaces

Materials

Diamond, Emerald, 18k Gold

Diamond Drop Necklace in 18K Yellow Gold
By VR Jewels
Located in New York, NY
- Diamond > Stone Weight - 1.94 ct > Diamond Pcs - 11 > Stone Size - 6 x 3 mm > Length - 16 inch > Gross
Category

21st Century and Contemporary American Modern Drop Necklaces

Materials

Diamond, Yellow Gold, 18k Gold

14 Karat Yellow Gold Citrine Stone and Diamond Swirl Ring RM1544-8
Located in Southampton, PA
a ~.60CT citrine stone, encircled by ~.11CT of diamonds.
Category

21st Century and Contemporary Band Rings

Materials

Diamond, Yellow Gold

18 Karat White Gold Diamond Small Dragonfly Motif Delicate Pendant Necklace
Located in Los Angeles, CA
Diamonds = 0.06 ct
Category

2010s American Choker Necklaces

Materials

Diamond, White Diamond, 18k Gold, White Gold

Diamonds, 18 Karat White Gold Model Veretta Ring
Located in Marcianise, Marcianise (CE)
mounted with 11 diamonds. Diamonds 0.51 ct Total Weight 2.70 gr RF +GHEE Italian Size 11 Usa Size 5.75
Category

Early 2000s Italian Modern Engagement Rings

Materials

Diamond, 18k Gold, White Gold

Lovely Pair of Rose Cut Diamond Star Brooches, 18th Century
Located in Idar-Oberstein, DE
. They are set with very good quality and big rose cut diamonds, ca. 11ct, in silver and gold and are in
Category

Antique Late 18th Century Unknown Brooches

Materials

Diamond, Gold Plate

GRS Certified 2.63 Carat Pigeon Blood Ruby and Diamond Pendant
By Rewa Jewellery
Located in Bangkok, TH
2.63 ct. This pendant has a mix of round, pear, and marquise shaped diamonds. There are a total of 11
Category

2010s Pendant Necklaces

Materials

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

Victorian No Heat Sapphire Old Cut Diamond Silver Gold Cluster Ring
Located in Los Angeles, CA
European Cut diamonds-11=0.57 Ct. F-J/VS1-SI2
Category

Antique Late 19th Century Unknown Victorian Cluster Rings

Materials

Diamond, Sapphire, 15k Gold, Sterling Silver

Diamond Bracelet in 14 Karat White Gold, 11 Grams, Estate, Affordable
Located in New York, NY
. This makes for a very comfortable, wearable piece. 14 K gold 11 Grams Diamond approximately 0.5 Ct
Category

20th Century Unknown Link Bracelets

Materials

Diamond, White Gold, 14k Gold

Yellow Gold Sapphire and Diamond Ring, 18 Karat Round Cut .84 Carat Milgrain
Located in Greensboro, NC
: Round Color: Blue Diameter: 5.4mm Natural Diamonds Carats: .11ct Cut: Round Brilliant Color: E
Category

20th Century Unknown Engagement Rings

Materials

Diamond, Sapphire, 18k Gold, Yellow Gold

White South Sea Pearl Diamonds G/VS Carat 0.43 18 Karat White Gold Earrings
Located in Vannes, FR
Discover this White South Sea Pearl 10-11 mm Diamonds G/VS ct 0.43 18K White Gold Earrings. South
Category

21st Century and Contemporary Italian Stud Earrings

Materials

White Diamond, South Sea Pearl, 18k Gold, White Gold

Van Cleef Arpels Sapphire Diamond gold Bug Brooch
By Van Cleef Arpels
Located in Toronto, ON
and 11 round diamonds approximately .50 ct. The eyes set with small cabochon rubies. Item Weight: 16.6
Category

20th Century American More Jewelry

14 Karat White Gold Diamond Necklace Converted to Bracelet
Located in New York, NY
Metal: 14k White Gold Condition: Excellent Gemstone: Diamond Diamond Weight: 11 CT Total Weight: 48
Category

20th Century Unknown More Bracelets

Rosior Contemporary "Fruit Basket" Cocktail Ring Set with Muticolor Gemstones
By Rosior
Located in Porto, PT
0,09 ct; - 11 Brown Diamonds with 0,04 ct; - 9 Black Diamonds with 0,1 ct, - 8 "Cognac" Diamonds with
Category

21st Century and Contemporary Portuguese Contemporary Cocktail Rings

Materials

Diamond, White Diamond, Yellow Diamond, Black Diamond, Brown Diamond, Em...

18 Karat White Gold Ruby Small Bloom Flower Stud Earring Ring Set
Located in Los Angeles, CA
: 0.40 inches / Width: 0.40 inches Ring: 11 Round Diamonds = 0.20 ct 24 Ruby Stones = 0.90 ct Length
Category

2010s American Stud Earrings

Materials

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

Pearls with Ruby and 18K Gold
By Galt Bro. Jewelers
Located in Oakton, VA
18 Karat White & Rose Gold Diamonds 11-35 CT Ruby 15.04 CT
Category

21st Century and Contemporary American Art Deco Drop Necklaces

Materials

Pearl, Ruby, Diamond, Gold, 18k Gold, Rose Gold, White Gold

14 Karat White Gold Diamond Wedding Band
Located in Washington Depot, CT
baguette diamonds set in classic 14K white gold. Shank measures 1 mm. Approximate total diaond weight: .11
Category

20th Century Wedding Rings

Materials

Diamond, White Gold

Tiffany Co. 14 Karat Yellow Gold Sapphire and Diamond Brooch
Located in Washington Depot, CT
detailed 14K gold. Approximate total diamond weight: .11 ct. Diamond color: G Diamond clarity: VS2 Size
Category

20th Century Brooches

Materials

Yellow Gold

Vintage Roberto Coin 18 Karat White Gold Diamond Peace Sign Pendant Necklace
By Roberto Coin
Located in Washington Depot, CT
. Signature Roberto Coin ruby on back of pendant. Approximate total diamond weight: .11 ct. Diamond color
Category

20th Century Pendant Necklaces

Materials

Diamond, White Gold

14 Karat White Gold Diamond Wedding Band
Located in Washington Depot, CT
cut-outs. Width: 3 mm. Height: 5 mm. Shank: 2 mm. Approximate total diamond weight: .11 ct. Diamond
Category

20th Century Wedding Rings

Materials

Diamond, White Gold

Estate 11 Carat Ruby 2 Carat Diamond Pendant Gold Drop Earrings
Located in Napoli, NA
add to any collection! CONDITION: Pre-owned - Excellent GEMSTONES: Ruby 11 ct - Diamond 2 ct METAL
Category

Late 20th Century Italian Art Nouveau Drop Earrings

Materials

Diamond, Ruby, 18k Gold, Gold

Bat Designer Ring 11 ct Amethyst and 1 ct Diamonds total ca. 0.89 ct so Creepy
Located in Viena, Viena
diamonds total ca. 0.61 ct, as contrast white diamonds total ca. 0.28 ct G (fine white) / VS (very small
Category

2010s Unknown Modern Fashion Rings

Materials

Diamond, Amethyst, 18k Gold, White Gold

ct 11, 28 White Diamonds and ct 10, 00 Blue Sapphires Australian Pearl Necklace
Located in Marcianise, Marcianise (CE)
Flower pendant necklace in 14k yellow gold mounted with diamonds, blue sapphires drops and one
Category

Vintage 1980s Italian Pendant Necklaces

Materials

White Diamond, South Sea Pearl, Blue Sapphire, 14k Gold

Citrine Trapezoids Brilliant Ring 18 Yellow Gold 11 Ct 0.80 Ct
Located in Viena, Viena
ct, wears very well and stands out, new production, set with full-cut diamonds in the ring shoulders
Category

2010s Unknown Modern Cocktail Rings

Materials

Citrine, Diamond, 18k Gold, Yellow Gold

11 Ct Natural Emerald Zambia Cabochon Diamond Stud Earring 14 Karat Rose Gold
Located in New York, NY
Approximately 11 Carat of Natural Brazilian Emerald Cabochon earrings in rose gold Each Emerald
Category

2010s Stud Earrings

Materials

Diamond, Emerald, 14k Gold, Rose Gold

Large Aquamarine Diamond Gold Ring
Located in Southampton, PA
18.2 x 10.8 x 7.4mm Total weight approx. 11ct 104 brilliant cut diamonds SI1 clarity, G color total
Category

Vintage 1970s American Cocktail Rings

Materials

Aquamarine, Diamond, 18k Gold

Imperial Topaz and Diamond White Gold 750 Ring
Located in Lucerne, CH
topaz of yellowish orange colour, pearshape, approx. 11 ct 5 marquise cut diamonds totaling approx. 0.60
Category

Early 2000s Swiss Contemporary Cocktail Rings

Materials

White Diamond, Topaz, 18k Gold, White Gold

18 Karat Gold Deco Style Pendant with Opal and Diamonds
Located in New York, NY
gold, Opal, 1.1mm diamonds (.11ct) Chain is 16/18" 15mm wide x 9.5mm high
Category

21st Century and Contemporary American Contemporary Pendant Necklaces

Materials

Diamond, Opal, Gold, 18k Gold

Green Chrysoprase and Diamond 14K Yellow Gold Ring, circa 1970s
Located in Beverly Hills, CA
cabochon chrysoprase. Surrounded by 16 round brilliant cut diamonds totaling 0.25 ct. with I-J color and VS
Category

20th Century Cocktail Rings

Materials

Diamond, Chrysophrase, Aquamarine, Yellow Gold, 14k Gold

27.33ct Natural Pink Sapphires Diamonds Bracelet 18kt Three Tier Magnificent
Located in New York, NY
& Transparent. Vivid Pinks and Prime Saturation. Average each: 4.5 x 3.2mm 54 count 11ct Natural Diamonds
Category

2010s American Tennis Bracelets

Materials

Diamond, Pink Sapphire, 18k Gold, White Gold, Yellow Gold

14 Carat Emerald Cabochon and Diamond Cufflinks in 14 Karat Yellow Gold Men
Located in New York, NY
the middle. Details: Gemstone Cabochon: Approximately Emerald 14 Ct 14 K Gold 11 Gm Diamond 0.08 Ct
Category

2010s Cufflinks

Materials

Diamond, Emerald, 14k Gold, Yellow Gold

Pear Shape Opal and Diamond Cocktail Ring 14 Karat Yellow Gold, Estate
Located in New York, NY
, Cocktail ring 14 Karat Yellow Gold Estate Size of the opal 23X17 MM, Approximately 11-12 ct ^ small
Category

2010s Cocktail Rings

Materials

Opal, Diamond, 14k Gold, Yellow Gold

11 Carat Oval Shape Ethiopian Opal and Diamond Cocktail Ring 14 Karat White Gold
Located in New York, NY
11 Carat Oval Shape Ethiopian Opal & Diamond Cocktail Ring 14 Karat White Gold Oval Natural Opal
Category

2010s Cocktail Rings

Materials

Diamond, Opal, 14k Gold, White Gold

Adorable Paws Kitty Cat Black Opal Diamond Akoya Pearl Necklace 18K Gold
Located in Suwanee, GA
. ---------------------------------------------------------------------------------------------------- ABOUT THIS PRODUCT 18K Yellow Gold Australian Black Opal, 1.10 ct 11 Diamonds...
Category

2010s American Artist Pendant Necklaces

Materials

Diamond, Opal, Pearl, Black Opal, 18k Gold, Yellow Gold

Sapphire Cross in 18 Karat Gold
Located in Bad Kissingen, DE
18k white gold stamped with fineness "750". 11 sapphires 1.14 ct 1 diamond 0.07 ct length 30 mm
Category

21st Century and Contemporary German Pendant Necklaces

Materials

18k Gold

Important "Solitaire" Ring Ct. 3, 11
Located in Sežana, SI
Very important solitaire ring. Solid 18K white gold Diamond ct. 3,11, M color, VVS2 clarity
Category

Vintage 1960s Italian Contemporary Engagement Rings

Materials

Diamond, 18k Gold

GIA White Gold Fancy Yellow 4.02 ct Diamond 3.62 ct diamond Earrings
By HY JEWELLERY
Located in Knightsbridge, GB
[ 48 diamonds ] Color: Fancy light yellow Clarity: VS Marquise cut white diamond weight: 2.29 ct [ 11
Category

2010s British Modern Dangle Earrings

Materials

White Diamond, Yellow Diamond, 18k Gold

Classic Diamond Platinum Pendant
Located in Atlanta, GA
) accented by 11 brilliant cut diamonds (.72 ct total weight). All set in a classic platinum mounting
Category

21st Century and Contemporary American Contemporary Drop Necklaces

Materials

Diamond, Platinum

Tourmaline Pave Diamond Ring
Located in Knoxville, TN
- 1.06ct- Natural- Very Fine- Slightly Purplish- Red Strong 2- Princess Cut Diamonds- .11ct Total Weight
Category

2010s Unknown Art Deco Fashion Rings

Materials

Diamond, Rubelite, Tourmaline, 18k Gold, White Gold

White Gold Fancy Yellow Diamond Heart Bracelet
By HY JEWELLERY
Located in Knightsbridge, GB
diamond weight: 7.87 ct [ 11 diamonds ] Color: Fancy yellow Clarity: VS Total small fancy yellow diamond
Category

2010s British Modern Modern Bracelets

Materials

White Diamond, Yellow Diamond, 18k Gold

Ladies Diamond Yellow Gold Leaf Design Pin
Located in Salt Lake City, UT
The pin contains nine round brilliant cut diamonds, prong set, with estimated weights from .11 to
Category

Vintage 1950s Brooches

Materials

Diamond, 14k Gold, Yellow Gold

White Gold Round Full Cut Diamonds Cut Tourmaline Paraiba Ring "Lagoon"
Located in Moscow, RU
White gold 750, 11 gr 1 pear cut tourmaline paraiba, 4,4 ct 194 round full cut diamonds, 0,62 ct
Category

2010s Russian Modern Cocktail Rings

Materials

Diamond, Tourmaline, 18k Gold, White Gold

14 Karat Gold 3 Carat Illusion Set Diamond Engagement Ring with Matching Band
Located in Gainesville, FL
engagement ring comes with (1) matching diamond band. The band consist of (9) .11ct round natural diamonds
Category

21st Century and Contemporary Unknown Contemporary Engagement Rings

Materials

White Diamond, 14k Gold

Art Deco 14 CT White Gold Sapphire Halo and Diamond Ring
Located in Rottedam, NL
centerpiece of 11 diamonds totaling 0.8 CT and is accented with 20 deep-blue calibrated sapphires. The
Category

Mid-20th Century Dutch Art Deco Engagement Rings

Materials

Diamond, Sapphire, 14k Gold, White Gold

11 Carats Diamond White Gold Bracelet
Located in Metairie, LA
Hand-Made 18k White Gold and 11ct Diamond Bracelet From a Wealthy Estate! This stunning handmade
Category

Mid-20th Century American Tennis Bracelets

Materials

Diamond, 18k Gold, White Gold

18 Karat Gold, Diamond and Boulder Opal Necklace
By Nancy Phillips
Located in Eugene, OR
in the photo showing the back of the piece. 0.49cts of Diamond surround the 11ct. Opal for added
Category

2010s Thai Modern Pendant Necklaces

Materials

Diamond, Opal, 18k Gold

Doves 18K White Gold Triangle Geometric Ring w/White Topaz, Turquoise Diamonds
By Doves by Doron Paloma
Located in Great Neck, NY
Information: - 11 Diamonds totaling 0.30 ct. G-H Color, SI Quality. - White Topaz/Turquoise: 14x18 mm
Category

21st Century and Contemporary American Art Deco Cocktail Rings

Materials

Diamond, White Diamond, Topaz, Turquoise, 18k Gold, White Gold

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11ct Diamond For Sale on 1stDibs

On 1stDibs, you can find the most appropriate 11ct diamond for your needs in our varied inventory. Frequently made of Gold, 18k Gold and White Gold, this item was constructed with great care. Find an antique version now, or shop for 36 vintage or 102 modern creation for a more contemporary example of these cherished accessories. Making the right choice when shopping for a 11ct diamond may mean carefully reviewing examples of this item dating from different eras — you can find an early iteration of this piece from the 20th Century and a newer version made as recently as the 21st Century, both of which have proven very popular over the years. A 11ct diamond from LB Exclusive, Renata Bernard and Sarosi By Timeless Gems — each of whom created a beautiful version of this treasured accessory — is worth considering. See these pages for a round cut iteration of this accessory, while there are also cabochon cut and oval cut cut versions available here, too. Most of our 11ct diamond for sale are for women, but there are 40 pieces available to browse for men.

How Much is a 11ct Diamond?

Prices for a 11ct diamond can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $244 and can go as high as $600,000, while this accessory, on average, fetches $9,500.

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.