Skip to main content

16 Carat Diamond

to
208
1,220
679
547
411
446
1,405
367
223
127
104
6
13
314
1,129
1
4
20
17
8
17
19
28
23
28
4
922
530
16
479
208
95
68
68
to
1
1
1
50
33
20
17
16
379
242
113
48
33
15
5
2
2
2
1
1,463
5
1,173
119
Sort By
.41ct Princess Cut Diamond pendant in 18KT White Gold
Located in New York, NY
Carat Weight: 0.04ctw Setting: Bezel Set Number of Round Diamonds: 16 Carat Weight: 0.10ctw
Category

2010s American Modern Pendant Necklaces

Materials

Diamond, 18k Gold, White Gold

Exquisite Natural Diamond Necklace In 14 Karat White Gold
Located in Manhattan Beach, CA
Grams Necklace Length: 16 Inches Diamond Weight: 0.45 Carat (F-G Color, VS2-SI1 Clarity) Quantity: 10
Category

2010s American Modern Pendant Necklaces

Materials

Diamond, 14k Gold, White Gold

Exquisite Natural Diamond Necklace In 14 Karat Yellow Gold
Located in Manhattan Beach, CA
Grams Necklace Length: 16 Inches Diamond Weight: 0.45 Carat (F-G Color, VS2-SI1 Clarity) Quantity: 10
Category

2010s American Modern Pendant Necklaces

Materials

Diamond, 14k Gold, Yellow Gold

Exquisite Natural Diamond Necklace In 14 Karat White Gold
Located in Manhattan Beach, CA
Weight: 2.1 Grams Necklace Length: 16 Inches Diamond Weight: 0.25 Carat (F-G Color, VS2-SI1 Clarity
Category

2010s American Modern Pendant Necklaces

Materials

Diamond, 14k Gold, White Gold

Exquisite Natural Diamond Necklace In 14 Karat White Gold
Located in Manhattan Beach, CA
: 14K Total Necklace Weight: 1.4 Grams Necklace Length: 16 Inches Diamond Weight: 0.70 Carat (F-G Color
Category

2010s American Modern Pendant Necklaces

Materials

Diamond, 14k Gold, White Gold

Exquisite Natural Diamond Necklace In 14 Karat Yellow Gold
Located in Manhattan Beach, CA
: 14K Total Necklace Weight: 1.4 Grams Necklace Length: 16 Inches Diamond Weight: 0.70 Carat (F-G Color
Category

2010s American Modern Pendant Necklaces

Materials

Diamond, 14k Gold, Yellow Gold

GIA Certified 11.98 Carat Emerald Cut Eternity Band
Located in LA, CA
Classic Eternity Ring with 11.98 carats of 16 Emerald cut diamonds are all GIA certified. Our fine
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

18ct Diamond Bangle
Located in Cape Town, ZA
: 48mm Stone Attributes Number of stones: 16 Diamonds Carat Weight: 0.2ct each Cut: Round Brilliant
Category

21st Century and Contemporary Bangles

Materials

Diamond

0.36ct Round Diamond Bezel Set Pendant in 18KT White Gold
Located in New York, NY
Number of Round Diamonds: 1 Carat Weight: 0.24ctw Setting Bezel Set Number of Round Diamonds: 16 Carat
Category

2010s American Modern Pendant Necklaces

Materials

Diamond, 18k Gold, White Gold

Exquisite Natural Diamond Bar Necklace In 14 Karat Yellow Gold
Located in Manhattan Beach, CA
Stamped: 14K Total Necklace Weight: 2 Grams Necklace Length: 16 Inches Diamond Weight: 0.40 Carat (F-G
Category

2010s American Modern Pendant Necklaces

Materials

Diamond, 14k Gold, Yellow Gold

Exquisite Natural Diamond Bar Necklace In 14 Karat White Gold
Located in Manhattan Beach, CA
Stamped: 14K Total Necklace Weight: 2 Grams Necklace Length: 16 Inches Diamond Weight: 0.40 Carat (F-G
Category

2010s American Modern Pendant Necklaces

Materials

Diamond, 14k Gold, White Gold

Exquisite Natural Diamond Bar Necklace In 14 Karat Rose Gold
Located in Manhattan Beach, CA
: 14K Total Necklace Weight: 2 Grams Necklace Length: 16 Inches Diamond Weight: 0.40 Carat (F-G Color
Category

2010s American Modern Pendant Necklaces

Materials

Diamond, 14k Gold, Rose Gold

Exquisite Natural Diamond Infinity Necklace In 14 Karat White Gold
Located in Manhattan Beach, CA
Introducing our stunning 0.30 Carat Natural Diamond Infinity Necklace in 14 Karat White Gold
Category

2010s American Modern Pendant Necklaces

Materials

Diamond, 14k Gold, White Gold

Exquisite Natural Diamond Infinity Necklace In 14 Karat Yellow Gold
Located in Manhattan Beach, CA
Introducing our stunning 0.30 Carat Natural Diamond Infinity Necklace in 14 Karat Yellow Gold
Category

2010s American Modern Pendant Necklaces

Materials

Diamond, 14k Gold, Yellow Gold

Exquisite Natural Diamond Butterfly Necklace In 14 Karat White Gold
Located in Manhattan Beach, CA
Stamped: 14K Total Necklace Weight: 2.5 Grams Necklace Length: 16 Inches Diamond Weight: 0.20 Carat (F-G
Category

2010s American Modern Pendant Necklaces

Materials

Diamond, 14k Gold, White Gold

Exquisite Natural Diamond Butterfly Necklace In 14 Karat Rose Gold
Located in Manhattan Beach, CA
Stamped: 14K Total Necklace Weight: 2.5 Grams Necklace Length: 16 Inches Diamond Weight: 0.20 Carat (F-G
Category

2010s American Modern Pendant Necklaces

Materials

Diamond, 14k Gold, Rose Gold

Exquisite Natural Diamond Butterfly Necklace In 14 Karat Yellow Gold
Located in Manhattan Beach, CA
Introducing our enchanting 0.20 Carat Natural Diamond Butterfly Necklace crafted in exquisite 14
Category

2010s American Modern Pendant Necklaces

Materials

Diamond, 14k Gold, Yellow Gold

Diamond Gold Band
Located in New York, NY
An 18kt yellow gold ring featuring 32 round diamonds weighing 2.98 cts and 16 baguette diamonds
Category

Vintage 1980s Band Rings

Materials

Diamond, 18k Gold

Hearts on Fire Illa Diamond Bracelet in 18 Karat White Gold
By Hearts On Fire
Located in Miami, FL
version of the stunning 70 carat Illa Constellation Bracelet launched in 2012. Holding more than 16 carats
Category

21st Century and Contemporary More Bracelets

Materials

Diamond, 18k Gold, White Gold

19.07ct Mixed Shape Pink Sapphire Diamond Bracelet in 18KT White Gold
Located in New York, NY
• Shapes: Round, Heart, Oval, Pear, Emerald Cut • Number of Heart Shape Diamonds: 16 • Carat Weight
Category

2010s American Modern Modern Bracelets

Materials

Diamond, Pink Sapphire, 18k Gold, White Gold

Diamond and Gold Bracelet
Located in Los Angeles, CA
cm INTERNAL CIRCUMFERENCE: 16cm (size 16) DIAMOND WEIGHT: Approximately 16.5 carats DIAMOND
Category

20th Century Retro Bracelets

Materials

Diamond, 18k Gold

Tiffany Co. Elsa Peretti Diamonds by The Yard Three-Diamond Necklace
By Tiffany Co.
Located in Miami, FL
brilliant diamonds. 16" long. Carat total weight .42. Designer: Tiffany & Co. Elsa Peretti Collection
Category

2010s More Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

Ring White Gold Diamond
Located in PARIS, FR
Ring in white gold 750 thousandths (18 carats). 16 brilliant-cut diamonds of approximately 0.015 ct
Category

20th Century French Engagement Rings

Materials

Diamond, White Gold

14K White Gold 0.168 Ctw Diamond, 0.206 Ctw Real Black Diamond Stud Earrings
By JEWELICK
Located in Jaipur, RJ
✧ Real Black Diamond - 0.90mm - 4 Pcs ✧ Real Black Diamond - 1.30mm - 16 Pcs ✦ Approx. Diamond Carat
Category

2010s Indian Modern Stud Earrings

Materials

Diamond, Black Diamond, 14k Gold, White Gold

Glamorous Diamond Cluster Drop Earrings
Located in New York, NY
Gorgeous diamond cluster earrings featuring 22 marquise diamonds, 15.82 carats, 16 round diamonds
Category

21st Century and Contemporary Chandelier Earrings

Materials

Diamond, Platinum

Sapphire Pendant in 14k white gold with Natural Diamonds 2.05ct Blue Sapphire
Located in Great Neck, NY
Diamond's Count: 16 Total Diamonds Weight: 0.72 Carats Sapphire's Count: 1 Total Sapphire's Weight: 2.05
Category

20th Century American Pendant Necklaces

Materials

Diamond, Blue Sapphire, 14k Gold, White Gold

Diamond Cluster Cocktail Ring
Located in Dallas, TX
Stunning 18 Karat Yellow Gold Cluster Ring featuring 16 Round Brilliant Diamonds 2.00 Carat Total
Category

Late 20th Century Unknown Cocktail Rings

Materials

Diamond, 18k Gold

9ct White Gold Diamond Ring
Located in Cape Town, ZA
Diamond Carat Weight: 1 x 0.10ct Cut: Rose Cut Carat
Category

21st Century and Contemporary Band Rings

Materials

Diamond, White Gold

Rubellite and Diamond Ring
Located in Dallas, TX
Classic 14 Karat Yellow Gold Ring Featuring 1 Cushion Cut Rubellite 3.81 Carat, 16 Round Brilliant
Category

Late 20th Century Unknown More Rings

Materials

Diamond, Rubelite, 14k Gold

14k Spectacular Diamond Ring Band
Located in New York, NY
Weight: 0.30 carat ►Diamond Shape: 16 Round Brilliant ►Diamond Clarity & Grade: SI ►Total Item Weight
Category

21st Century and Contemporary Band Rings

Materials

Diamond

18ct White Gold Halo Diamond Ring
Located in Cape Town, ZA
= 0.21CT Colour: GH Clarity: VSSI Carat Weight: 16 x Diamond 0.0075p = 0.12CT Colour
Category

21st Century and Contemporary Wedding Rings

Materials

Diamond, White Gold

Natural Diamond and Oval Blue Sapphire Ring in 18k White Gold, 6.82ct, Lady-D
Located in Great Neck, NY
occasions or as a statement of refined elegance. 18k White Gold Diamond's Count: 16 Total Diamonds Weight
Category

21st Century and Contemporary American Fashion Rings

Materials

Diamond, Blue Sapphire, 18k Gold, White Gold

18ct Tanzanite and Diamond Cluster Necklace
Located in Cape Town, ZA
Side Stone Attributes Number of Stones: 16 Diamonds Carat Weight: 0.28ct
Category

21st Century and Contemporary Unknown Chain Necklaces

Materials

Diamond, Tanzanite

Synthetic Star Sapphire Diamond Ring
Located in Solvang, CA
star sapphire accented with 10 single cut diamonds at .16 carat total weight. The diamonds have VS2
Category

Early 2000s Fashion Rings

Materials

Diamond, Star Sapphire, 14k Gold, White Gold

Vintage Art Deco Ring Diamond White Gold 18K Diamond Brilliant and Baguette Cut
Located in Valencia, Comunidad Valenciana
diameter, total weight 1.20 carats. 16 brilliant cut diamonds of 2 millimeters in diameter and 0.04 cts
Category

Mid-20th Century Art Deco Cluster Rings

Materials

Diamond, White Gold

Sapphire Diamond gold platinum Earrings
Located in Boston, MA
, weighing 8.80 carats & 16 oval and baguettes diamonds weighing 6.28 carats-GRS certificate GRS2000-10134
Category

20th Century Lever-Back Earrings

Materials

Diamond, Sapphire, 18k Gold, 9k Gold, Platinum, Yellow Gold

Emerald Diamond 18K Figural Hummingbird Brooch
Located in Fuquay Varina, NC
tiny creature's flitting colors and are set in 18k yellow gold. Hallmarks: 18K, LJ Total Diamonds: 16
Category

Late 20th Century Unknown Brooches

Materials

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

Ruby Diamond 14K Square Halo Ring
Located in Fuquay Varina, NC
man. Hallmarks: 14KP, T&C Total Diamonds: 16 Total Carat Weight: 0.48 ctw Diamond Shape: Round
Category

Late 20th Century Unknown Wedding Rings

Materials

Diamond, Ruby, 14k Gold, Yellow Gold

Material Girl Cuban Link Diamond Bracelet
By Adore Adorn
Located in Atlanta, GA
than 16 carats of diamonds and encompasses a fully jeweled and oversized signature fold-over clasp. Up
Category

21st Century and Contemporary American Link Bracelets

Materials

Diamond, 14k Gold

Blue Sapphire Diamond 18K Bypass Ring
Located in Fuquay Varina, NC
Diamonds: 16 Total Carat Weight: 0.68 ctw Diamond Shape: Round Brilliant Diamond Clarity: VVS-VS Diamond
Category

Late 20th Century Unknown Cocktail Rings

Materials

Diamond, Blue Sapphire, 18k Gold, Yellow Gold

Monseo Kunzite, Orange Sapphires and Diamond Ring
By Monseo
Located in Porto, PT
carats 16 brown diamonds, total 0,48 carats 40 orange sapphires, total 0,90carats. Weight 15,10 grams
Category

21st Century and Contemporary Portuguese Contemporary Cocktail Rings

Materials

White Diamond, Sapphire, Brown Diamond, Kunzite, Gold, 18k Gold, Rose Gold

Platinum Diamond and 16.3mm Tahitian Pearl Ring
By Peter Atman
Located in New York, NY
Handmade Platinum Ring, set with 16 fine round Diamonds 3.20 carats and a very large Tahitian Pearl
Category

2010s American Contemporary Cocktail Rings

Materials

Diamond, Pearl, Platinum

Platinum Diamond and 13.4mm Tahitian Pearl Ring
By Peter Atman
Located in New York, NY
Handmade Platinum Ring, set with 16 extra fine Diamonds 3.38 carats and a High Quality Tahitian
Category

2010s American Contemporary Cocktail Rings

Materials

Diamond, Pearl, Platinum

9ct White Gold Aquamarine Diamond Pearl Necklace
Located in Cape Town, ZA
16 RBC Diamonds weighing 0.8 carat in total, 20 RBC Diamonds weighing 0.2 carat in total, and 4
Category

21st Century and Contemporary Art Deco Beaded Necklaces

Materials

Aquamarine, Diamond, Pearl, White Gold

Diamond Yellow and White Gold Flower Earrings
Located in Calabasas, CA
, clarity VS1-SI2, suspended from 1 old European-cut diamond, weights .16 carats and .15 carats, color: H-I
Category

Vintage 1950s Unknown Dangle Earrings

Materials

Diamond, White Gold, 14k Gold

Tourmaline, Topaz, Diamond Pearl 14K Dangle Earrings
Located in Fuquay Varina, NC
, RL Total Diamonds: 16 Total Carat Weight: 0.20 ctw Diamond Shape: Single Cut Diamond Clarity: VS-SI
Category

Late 20th Century Unknown Dangle Earrings

Materials

Diamond, Pearl, Topaz, Tourmaline, 14k Gold, White Gold

Tiffany Co. Ruby and Diamond Flower Brooch
By Tiffany Co.
Located in Carmel, CA
16 diamonds weighing a total of .48 carats. This brooch takes the form of a flower with the petals
Category

Mid-20th Century Retro Brooches

Materials

Diamond, Ruby, Yellow Gold

Bayco Emerald Diamond Gold Platinum Stud Earrings
Located in Boston, MA
with 2 emerald cut Emeralds weighing 8.34 carats, origin: Zambia (Vibrant color), and 16 Diamonds
Category

Early 2000s American Clip-on Earrings

Materials

Diamond, Emerald, 18k Gold

Cultured Pearl and Diamond 14K Gold Bangle
Located in Fuquay Varina, NC
gold bangle accented with diamonds. Hallmarks: 14K, 585, Makers Mark Total Diamonds: 16 Total Carat
Category

Late 20th Century Unknown Bangles

Materials

Diamond, Cultured Pearl, 14k Gold, Yellow Gold

Crivelli Circle of Life Pendant Necklace with Black and White Diamonds
By Crivelli
Located in Toronto, Ontario
VS clarity F colour 1.68 carat black diamonds 16 inch chain in 18 karat rose gold
Category

2010s Italian Pendant Necklaces

Materials

Diamond, Black Diamond, 18k Gold

Vintage Sapphire and Diamond Wide Gold Ring
Located in Pikesville, MD
8 round diamonds at approximately .16 carats total weight. Diamonds are approximately G color, SI1
Category

Vintage 1960s Unknown Fashion Rings

Materials

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

Vintage Diamond Textured Floral Motif 18K Convertible Brooch
Located in Fuquay Varina, NC
, LEON, 20699 Total Diamonds: 16 Total Carat Weight: 0.53 ctw Diamond Shape: Round Brilliant & Single
Category

Late 20th Century Unknown Brooches

Materials

Diamond, 18k Gold, Yellow Gold

Van Cleef Arpels Small Diamond Gold Fleurette Pendant Necklace
By Van Cleef Arpels
Located in Miami, FL
: Van Cleef & Arpels Chain Length: 16 inches Diamond Carat Weight: 7 Round Diamonds weighing Approx
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, 18k Gold, White Gold

18 Karat Lioness Diamond and Ruby Large Brooch
Located in Pikesville, MD
carats of bright white diamonds and a single .16 carat cabochon ruby eye. Diamonds are expertly pave set
Category

1990s Unknown Modern Brooches

Materials

White Diamond, Ruby, 18k Gold

Gubelin 18K Yellow Gold Diamond Mystery Watch Bangle Bracelet
By Gubelin
Located in Roma, IT
Gubelin diamond and yellow gold 18 Karats concealed watch bracelet with 16 diamonds carats 0.75
Category

Antique 1660s Swiss Bangles

Materials

Diamond, 18k Gold

Blackened Silver Ring "Elegance" with 8 Diamonds and Gold Details
Located in Kaunas, LT
This blackened ring "Elegance" with .16-carat 8 diamonds fascinates with its adorable look, where
Category

2010s Lithuanian Fashion Rings

Materials

Diamond, Gold, Silver

Sapphire and Diamond 18 Karat White Gold Flexible Cuff Bracelet
Located in Spartanburg, SC
contains 30 princess cut invisible set sapphires weighing combined 0.75 carat and 16 round diamonds
Category

Early 2000s Unknown Cuff Bracelets

Materials

Diamond, Blue Sapphire, 18k Gold

  • 1
  • ...
Get Updated with New Arrivals
Save "16 Carat Diamond", and we’ll notify you when there are new listings in this category.

16 Carat Diamond For Sale on 1stDibs

You are likely to find exactly the 16 carat diamond you’re looking for on 1stDibs, as there is a broad range for sale. Each design created in this style — which was crafted with great care and often made from Gold, 18k Gold and White Gold — can elevate any look. Our collection of these items for sale includes 314 vintage editions and 748 modern creations to choose from as well. Finding the perfect 16 carat 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. Finding an appealing 16 carat diamond — no matter the origin — is easy, but LB Exclusive, Meghna Jewels and Luigi Ferrara each produced a popular version that is worth a look. See these pages for a round cut iteration of this accessory, while there are also oval cut cut and emerald cut cut versions available here, too. Finding a 16 carat diamond for sale for women should be easy, but there are 275 pieces available to browse for unisex as well as men, too.

How Much is a 16 Carat Diamond?

The price for a 16 carat diamond starts at $230 and tops out at $1,250,000 with these rings, on average, selling for $7,479.

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.  

Questions About 16 Carat Diamond
  • 1stDibs ExpertMarch 22, 2022
    A 24-carat diamond is a precious diamond gemstone that weighs 24 carats. One carat weighs 200 milligrams, meaning a 24-carat diamond weighs roughly 4.8 grams. That equates to roughly 0.17 ounces. On 1stDibs, shop a variety of diamond jewelry.
  • 1stDibs ExpertApril 5, 2022
    Yes, there are three-carat diamonds, and you can find them from a number of different jewelers and other retailers. Find an assortment of diamond jewelry from the world’s top sellers on 1stDibs.
  • 1stDibs ExpertNovember 6, 2023
    There is no hard-and-fast rule for how many carats a diamond necklace should be. On average, solitaire diamond necklaces range from 0.5 to 1 carat, but you can find pieces with larger and smaller stones. Tennis chains that feature continuous diamonds set into links usually have much higher total carat weights. For example, one might feature 60 individual diamonds, each 0.20 carats in size, for a total carat weight of 12.0 carats. Shop a wide range of diamond necklaces on 1stDibs.
  • 1stDibs ExpertApril 5, 2022
    A nine-carat diamond is considered rare and holds a premium price. Because of their rarity and size, nine-carat diamonds are a coveted choice for engagement rings. One of the most famous nine-carat diamond rings belongs to actress Kate Hudson, who has a nine-carat emerald cut diamond complemented with tapered baguettes on a platinum band. Shop a selection of diamond jewelry on 1stDibs.
  • 1stDibs ExpertSeptember 28, 2021
    An 8-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On an average an 8-carat diamond could cost you between $17,500 to $90,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 8-carat diamond jewelry from different periods and styles to choose from.
  • 1stDibs ExpertSeptember 28, 2021
    A 4-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 4-carat diamond could cost you between $8,400 to $71,500. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 4-carat diamond jewelry.
  • 1stDibs ExpertSeptember 28, 2021
    A 6-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 6-carat diamond could cost you between $15,000 to $80,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 6-carat diamond jewelry.
  • 1stDibs ExpertSeptember 28, 2021
    A 5-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 5-carat diamond could cost you between $9,600 to $67,500. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 5-carat diamond jewelry.
  • 1stDibs ExpertSeptember 28, 2021
    The minimum value of a 25-carat diamond ranges from $300 to $1,400. The prices change subject to the fluctuation of market factors. The value is defined based on the 4Cs — color, clarity, cut and carat weight. Shop antique, vintage and new diamond jewelry on 1stDibs.
  • 1stDibs ExpertFebruary 27, 2024
    Whether a 1.5-carat diamond is too big depends on the type of jewelry in question and your personal preferences. A single stud earring that is 1.5 carats is rather large and would cover the entire earlobe. In terms of rings, a 1.5-carat diamond is larger than average. Find a variety of diamond jewelry on 1stDibs.
  • 1stDibs ExpertFebruary 13, 2023
    Yes, a two-carat diamond is generally rarer than a smaller diamond, especially high-quality two-carat diamonds. When larger diamonds are found in nature, they usually have flaws. And prices per carat don’t increase as weight increases. A three-carat gem can be less valuable than a one-carat stone, for example, if all of the other attributes are of lesser quality in the larger diamond. Shop an assortment of diamond jewelry from some of the world’s top jewelers on 1stDibs.
  • 1stDibs ExpertFebruary 27, 2024
    In terms of dimensions, how large a 3-carat diamond is varies. The shape of the diamond will determine its length and width. Weighing 600 milligrams, diamonds that are 3 carats are generally considered to be large stones. On 1stDibs, shop a large collection of diamond jewelry from some of the world's top dealers.
  • 1stDibs ExpertFebruary 22, 2021
    The size of a 12 carat diamond is dependent on diamond cut. A 12 carat round diamond is roughly 15 mm in size.
  • 1stDibs ExpertSeptember 28, 2021
    A 9-carat diamond’s worth varies depending on the 4Cs of diamond quality — color, cut, clarity and carat. On average, a 9-carat diamond could cost you between $19,000 to $1,000,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 9-carat diamond jewelry from different periods and styles to choose from.
  • 1stDibs ExpertFebruary 22, 2021
    Depending on the quality, age, and designer, a 1-carat diamond can cost between $1,300 and $16,500.
  • 1stDibs ExpertAugust 17, 2021
    A 7-carat diamond can cost anywhere between $12,000 and $185,000 depending on the quality of the stone. The fewer imperfections, the more expensive the diamond. Some 7-carat diamonds can cost more than $400,000.
  • 1stDibs ExpertSeptember 28, 2021
    A 3-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 3-carat diamond could cost you between $7,200 to $51,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 3-carat diamond jewelry today.
  • 1stDibs ExpertNovember 1, 2023
    There is no set number of diamonds on a 16-inch tennis necklace. The number of diamonds that make up a tennis chain often depends on the size of the gemstones. Generally, the larger the diamonds are, the fewer there are on a tennis necklace. On 1stDibs, explore a variety of tennis necklaces.
  • 1stDibs ExpertAugust 24, 2021
    A 2 carat oval diamond is approximately 10.23mm × 6.82mm × 4.16mm in size. These diamonds usually have an approximate face-up area of 57.21 mm². Find a variety of diamonds on 1stDibs.
  • 1stDibs ExpertNovember 2, 2023
    There is no rule for how many carats a diamond wedding ring should be. You're free to choose a ring with a carat weight that appeals to you and fits your budget. The average carat weight for diamond wedding rings is 1 to 1.9 carats. Shop an assortment of diamond wedding rings on 1stDibs.