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Tiffany Co .98 Carat Diamond Platinum Bubble Key Pendant
By Tiffany Co.
Located in Stamford, CT
Tiffany & Co platinum "Bubbles" design diamond key pendant. Large size. Two Inches long. Incredibly
Category

21st Century and Contemporary Necklace Enhancers

Materials

Diamond, Platinum

Tiffany Co. Tiffany Kets Platinum Natural Diamond Pendant Drop Long Necklace
By Tiffany Co.
Located in Baltimore, MD
: 7.90 grams Diamonds: Approx. 0.75 CTW natural D-F VVS round diamonds Key: 1.65 inch Chain: 24 inch
Category

21st Century and Contemporary North American Modern Pendant Necklaces

Materials

Diamond, Platinum

Diamond Vintage Key Pendant Necklace in 14k Solid Gold
Located in Chicago, IL
Diamond Key Pendant 14k Solid Gold Vintage Key Necklace Christmas Women Pendant. Light weight can
Category

2010s Indian Pendant Necklaces

Materials

Diamond, Yellow Gold, Gold

Diamond Heart Key Pendant Necklace in 14k Solid Gold
Located in Chicago, IL
Diamond Key Necklace 14k Solid Gold Heart Necklace Christmas Women Pendant Gift Light weight can
Category

2010s Indian Pendant Necklaces

Materials

Diamond, Yellow Gold, 14k Gold, Gold

18 Karat Yellow Gold Diamond Toggle Necklace with Key and Lock Charms 79.4 Grams
By Harbor Diamonds
Located in New York, NY
intricately detailed charms: an ornate key, a vintage-style padlock, and a toggle clasp set with a ruby
Category

2010s Contemporary Link Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

Tiffany Co. Keys Petals Diamond Platinum Key Pendant Necklace
By Tiffany Co.
Located in Banbury, GB
. Taxes Model Keys Metal Platinum Stones Diamond Weight Approximately 12.38 g Length Approximately 52 cm
Category

2010s American Chain Necklaces

Materials

Diamond, Platinum

Certified Natural Vivid Red Spinel and Diamond Engagement Or Cocktail Ring
Located in Bangkok, Thailand
to frame the spinel and the two larger diamonds . Key Features 18 K White Gold : 5.04 grams
Category

2010s Modern Cocktail Rings

Materials

Diamond, Spinel, 18k Gold

J. Birnbach GIA 7.82 E SI2 Emerald Cut Diamond Three-Stone Ring
By J. Birnbach
Located in New York, NY
diamonds. Key Details - 7.82 carat emerald cut diamond, E SI2 (GIA) - Tapered baguette side stones = 0.75
Category

21st Century and Contemporary American Contemporary Three-Stone Rings

Materials

Diamond, Platinum

J. Birnbach GIA 2.35 Carat Fancy Yellow VVS2 Radiant Cut Diamond Solitaire Ring
By J. Birnbach
Located in New York, NY
fancy color diamonds. Key Details: - 2.35 carat radiant cut diamond, GIA certified Fancy Yellow VVS2
Category

21st Century and Contemporary American Contemporary Solitaire Rings

Materials

Diamond, Yellow Gold, 18k Gold

J. Birnbach GIA Certified 1.70 Carat D VS1 Oval Diamond Three-Stone Ring
By J. Birnbach
Located in New York, NY
choice for someone who appreciates enduring style and top-tier diamonds. Key Details - 1.70 carat oval
Category

21st Century and Contemporary American Contemporary Three-Stone Rings

Materials

Diamond, Platinum

Tiffany Co. Keys Diamond Enchant Quatra Heart Key Pendant
By Tiffany Co.
Located in Chicago, IL
Tiffany & Co. Keys Diamond Enchant Quatra Heart Key Pendant you described is a luxurious piece
Category

2010s American Pendant Necklaces

Materials

Diamond, Platinum

Platinum Art Deco Ruby and Diamond Chandelier Earrings
Located in Braintree, GB
earrings from the 1930s, featuring intricate geometric chandelier designs with rubies and diamonds. Key
Category

Vintage 1930s European Chandelier Earrings

Materials

Diamond, Ruby, Platinum

Boregaard GIA 2.35 Carat Fancy Brownish Yellow Hexagon Diamond Solitaire Ring
By Pedro Boregaard
Located in New York, NY
marries contemporary artistry with the allure of rare fancy colored diamonds. Key Details - 2.35 carat
Category

21st Century and Contemporary American Contemporary Solitaire Rings

Materials

Diamond, Yellow Gold

J. Birnbach GIA Certified 4.58 Carat K SI1 Old Mine Diamond Solitaire Ring
By J. Birnbach
Located in New York, NY
durability and a sleek, polished finish that complements the antique allure of the Old Mine Cut diamond. Key
Category

21st Century and Contemporary American Contemporary Solitaire Rings

Materials

Diamond, Platinum

Enamel Key Pendant 14 Karat Yellow Gold 1.4 Grams Made in Italy
By Harbor Diamonds
Located in New York, NY
Made in Italy, this 14 karat yellow gold Key motif pendants feature two sizes. Bigger ones are
Category

2010s Contemporary Pendant Necklaces

Materials

Yellow Gold, Enamel

Certified Natural Emerald Zambian Pear Shape Ring With Oval Ruby And Diamonds
Located in Bangkok, Thailand
sparkling white of the diamonds . Key Features 18K White Gold : 3.86 Grams Diamond : 35 Pieces / 0.51
Category

2010s Modern Cocktail Rings

Materials

Diamond, Emerald, Ruby, 18k Gold

20.04-Carat Fancy Yellow Diamond Ring Rare Color VS2 Clarity
Located in Mumbai, IN
colored diamonds. Key Features: • Center Diamond Weight: 20.04 carats • Color Grade: Fancy Yellow (rare
Category

21st Century and Contemporary Indian Modern Bridal Rings

Materials

Diamond, Yellow Diamond, 18k Gold

Tiffany Co. Keys 18K White Gold Diamond Clover Key Pendant Necklace
By Tiffany Co.
Located in Houston, TX
ladies 18K white gold single strand diamond necklace. The metal was tested and determined to be 18K white
Category

21st Century and Contemporary Unknown Pendant Necklaces

Materials

Diamond, Gold, 18k Gold, White Gold

GIA Certified 1 Carat Pear Cut Diamond Pendant Necklace
By Antinori Fine Jewels
Located in Chicago, IL
grace your neckline with a captivating natural diamond. Key Features: The necklace is delicately
Category

2010s Italian Modern Drop Necklaces

Materials

Diamond, White Diamond, 14k Gold, White Gold

Lalaounis Diamond Greek Key Pendant Necklace
By Ilias Lalaounis
Located in San Antonio, TX
18k gold and diamond pendant necklace in a Greek Key design. SIGNED GREECE 750 ILIAS LALAOUNIS
Category

Vintage 1970s Greek Pendant Necklaces

Materials

Diamond, 18k Gold

Tiffany Co. Diamond Oval Key Pendant Necklace
By Tiffany Co.
Located in New York, NY
Finely crafted in platinum with Round Brilliant cut Diamonds over the entire key. Comes with its
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Platinum

Tiffany Co Diamond Platinum Diamond Enchant Heart Key Pendant
By Tiffany Co.
Located in London, GB
A stunning Tiffany & Co. Enchant Heart Key Pendant, beautifully crafted in platinum and adorned
Category

2010s Pendant Necklaces

Materials

Diamond, Platinum

Tiffany Co. 0.11ct Diamond Crown Key Pendant
By Tiffany Co.
Located in London, GB
This sparkling diamond pendant comes from Tiffany & Co.’s Iconic key collection. Named the Crown
Category

21st Century and Contemporary British Pendant Necklaces

Materials

Diamond, 18k Gold, White Gold

14K Solid Yellow Gold Key Charm Pendant Natural Diamond Small key pendant charm
Located in Chicago, IL
14K Solid Yellow Gold Key Charm Pendant Natural Diamond Small key pendant charm Diamond Size 1 mm
Category

2010s Indian Art Deco Pendant Necklaces

Materials

Diamond, 14k Gold, Yellow Gold

10 Carat Diamond Tennis Bracelet
By Antinori Fine Jewels
Located in Chicago, IL
, this bracelet boasts a total weight of 10.86 ct of Natural Round Brilliant Cut Diamonds. Key Features
Category

2010s Unknown Contemporary Bangles

Materials

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

10  Carat Diamond Tennis Bracelet
10  Carat Diamond Tennis Bracelet
$23,200 Sale Price
20% Off
Tiffany Co. Keys 18K White Gold Pave Diamond Mini Crown Key Pendant Necklace
By Tiffany Co.
Located in Houston, TX
-strand diamond necklace. The metal was tested and determined to be 18K white gold. Engraved with "750
Category

21st Century and Contemporary Unknown Pendant Necklaces

Materials

Diamond, Gold, 18k Gold, White Gold

Tiffany Co. Keys Clover Diamond Necklace 25 1/2" - White Gold 18k Skeleton Key
By Tiffany Co.
Located in Greensboro, NC
Brand: Tiffany & Co. Collection: Keys Design: Clover Metal Content: 18k White Gold Stone
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, 18k Gold, White Gold

Tiffany and Co. Diamond Kaleidoscope Key Necklace
By Tiffany Co.
Located in Houston, TX
carats of mixed-cut diamonds in marquise, princess, and round shapes, bringing a radiant touch to any
Category

21st Century and Contemporary American Pendant Necklaces

Materials

Diamond, Platinum

Spark Creations Diamond-set Lock Key Necklace
By Spark Creations
Located in Litchfield, CT
Circa 2000s, 18k, by Spark Creations. Rife with fine detail and sparkly diamonds, we can't help
Category

Early 2000s American Pendant Necklaces

Materials

Diamond, 18k Gold, White Gold, Yellow Gold

1.18 Carat Diamond White Gold Pave Keys Pendant
Located in Stamford, CT
Unlock the allure of elegance with our 1.18ct pave Diamond and white gold Keys pendant. Crafted
Category

21st Century and Contemporary Necklace Enhancers

Materials

Diamond, Gold, 18k Gold, White Gold

Tiffany Co. Yellow Gold Diamond Blossom Key Pendant
By Tiffany Co.
Located in Mayfair, London, London
A beautiful 18k yellow gold diamond blossom pendant by Tiffany & Co. from the Tiffany Keys
Category

21st Century and Contemporary American Pendant Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

1ct Natural Diamond Heart Key Earrings 14kt
Located in New York, NY
Heart Flat diamond earrings. 1 carat natural round diamonds G color vs2 clarity 14kt white gold
Category

2010s American Dangle Earrings

Materials

Diamond, 14k Gold, White Gold

Lock in diamond ring 18KT white gold Key diamond ring
Located in Boca Raton, FL
Stunning diamond ring with key lock design idea made in 18KT white gold with 1.02 carats of
Category

21st Century and Contemporary Cocktail Rings

Materials

Diamond, 18k Gold, White Gold

Tiffany Co. Platinum Diamond Kaleidoscope Key Pendant Necklace 16"
By Tiffany Co.
Located in New York, NY
Tiffany & Co. Platinum Diamond Kaleidoscope Key Pendant Necklace 16" Platinum Pt950 Pendant
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Platinum

Diamond and 18 Karat Yellow Gold Key Pendant
Located in Tampa, FL
Diamond and 18 Karat Yellow Gold Key Pendant
Category

2010s Unknown Modern Pendant Necklaces

Materials

Diamond, Yellow Gold

Key necklace in white gold with diamonds
Located in London, GB
Brilliant beacons of optimism and hope, Naz Hariri’s Keys are radiant symbols of a bright future
Category

2010s Pendant Necklaces

Syna Yellow Gold Mogul Key Pendant with Diamonds
By Syna Jewels
Located in Fort Lee, NJ
Created with 18k Yellow Gold Diamonds 0.14 carat approx. Openable lock Chain sold separately
Category

2010s Unknown Contemporary Pendant Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

Tiffany Co. 0.40ct Diamond Fleur de Lis Key Pendant
By Tiffany Co.
Located in London, GB
This sparkling diamond pendant from Tiffany & Co.’s Iconic key collection. This particular key
Category

21st Century and Contemporary British Pendant Necklaces

Materials

Diamond, Platinum

Key of Amsterdam Pendant Rose Gold and Diamonds
By Bonebakker
Located in Amsterdam, NL
The classic key of Amsterdam in the biggest size in 18 karat pink gold with elegant diamonds
Category

21st Century and Contemporary Dutch Modern Pendant Necklaces

Materials

Diamond, 18k Gold, Rose Gold

TIFFANY Co. Platinum 1.18ct Diamond 2.25" Petals Key Pendant
By Tiffany Co.
Located in Los Angeles, CA
TIFFANY Co. Platinum 1.18ct Diamond 2.25" Petals Key Pendant Metal: Platinum Pendant: 2.25
Category

2010s American Pendant Necklaces

Materials

Diamond, Platinum

Vintage 18k Gold Diamond Heart Lock Key Pendant Necklace
Located in Beverly Hills, CA
with pavé diamonds. The heart and lock showcase a coordinated pavé diamond layout, while the key is
Category

1990s Pendant Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

Lock Key Diamond Necklace in 14k Solid Gold (Certified)
Located in New Delhi, DL
diamond accents -Each key charm is delicately set for sparkle -Hand-polished finish with secure clasp
Category

21st Century and Contemporary Indian Art Deco More Necklaces

Materials

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

Lock Key Diamond Bracelet in 14k Solid Gold (Certified)
Located in New Delhi, DL
SGL. This symbolic charm bangle features a pavé diamond lock at the center, with a tiny dangling key
Category

21st Century and Contemporary Indian Art Deco Charm Bracelets

Materials

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

10K White Gold Heart-Key Pendant with Sparkling Diamonds
Located in New York, NY
of a delicate key. The heart-shaped top is encrusted with shimmering diamonds, making it a symbol of
Category

21st Century and Contemporary Modern Pendant Necklaces

Materials

Diamond, 10k Gold, White Gold

Diamond set Trefoil Key Pendant 18 Karat White Gold
Located in London, GB
A diamond set trefoil key pendant in 18 karat white gold A sweet pendant designed as a trefoil key
Category

2010s British Contemporary Drop Necklaces

Materials

Diamond, Gold, 18k Gold, White Gold

Tiffany Co. 18K White Gold Diamond Petals Key Pendant
By Tiffany Co.
Located in New York, NY
Brilliant beacons of optimism and hope, Tiffany Keys are radiant symbols of a bright future. This
Category

20th Century American Modern Pendant Necklaces

Materials

Diamond, White Gold

Certified Natural Fei Chui Type A Jade and Diamond Ring in 18K White Gold
Located in KOWLOON, HK
perfectly complements the jade's green hue and enhances the overall sparkle of the diamonds. Key Features
Category

2010s Hong Kong Modern Cocktail Rings

Materials

Diamond, Jade, 18k Gold, White Gold

GIA Certified 0.30 Carat Fancy Brown Pink Diamond
Located in บางรัก, TH
organizations in the diamond industry. GIA certification ensures that the diamond’s key characteristics, such as
Category

2010s Asian Loose Gemstones

Materials

Pink Diamond

RIMA JEWELS Roman Key Ring with Diamond Pavé Detail
By RIMA JEWELS
Located in New York, NY
Large sterling silver modernized interpretation of a Roman key ring. A piece that expresses deeper
Category

2010s American Classical Roman Fashion Rings

Materials

Diamond, Sterling Silver

Celebration Key of Amsterdam Pendant White Gold and Diamonds
By Bonebakker
Located in Amsterdam, NL
Bonebakker Key of Amsterdam pendant in 18 karat white gold with 0.35 carat diamonds. Special
Category

21st Century and Contemporary Dutch Modern Pendant Necklaces

Materials

Diamond, 18k Gold, White Gold

Greek Key Tourmaline Earrings
Located in Woodland Hills, CA
Magazine. 19mm wide, 54mm long 22 round diamonds @ 1.4mm, 0.27 ctw 14 dark pink, 6x4 radiant cut
Category

21st Century and Contemporary American Artisan Chandelier Earrings

Materials

Diamond, Tourmaline, 14k Gold

Greek Key Tourmaline Earrings
Greek Key Tourmaline Earrings
$4,400 Sale Price / set
20% Off
14 Karat Yellow Gold Diamond Heart and Key Charm #21817
Located in Washington Depot, CT
14 Karat Yellow Gold Diamond Heart and Key Charm- Add a touch of romance to your jewelry
Category

20th Century Charm Bracelets

Materials

Diamond, 14k Gold, Yellow Gold

Syna Yellow Gold and Oxidized Silver Key Pendant with Diamonds
By Syna Jewels
Located in Fort Lee, NJ
Created in 18kyg & oxidized silver Diamonds 0.12 ct approx Limited edition Crafted from 18K yellow
Category

2010s Unknown Contemporary Pendant Necklaces

Materials

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

18k White Gold Natural Diamond Decorated Key Style Pendant Necklace
Located in Fatih/İstanbul, 34
In very good condition. Total weight is 7.9 grams. Totally is diamond 1.70 ct. The diamond is has F
Category

Early 2000s European Modern Pendant Necklaces

Materials

Diamond, White Gold

10 Karat White Gold and Diamond Heart Key Pendant #20957
Located in Washington Depot, CT
10K White Gold and Diamond Heart Key Pendant- Give her the key to your heart! This sparkling
Category

20th Century Pendant Necklaces

Materials

Diamond, 10k Gold, White Gold

.925 Sterling Silver Diamond Accent Virgo Zodiac Key Pendant Necklace
Located in New York, NY
Virgo zodiac pendant accented by a glimmering bezel set natural diamond. Brilliant beacons of optimism
Category

21st Century and Contemporary Indian Modern Pendant Necklaces

Materials

Diamond, White Diamond, Sterling Silver

.925 Sterling Silver Diamond Accent Virgo Zodiac Key Pendant Necklace
Located in New York, NY
Virgo zodiac pendant accented by a glimmering bezel set natural diamond. Brilliant beacons of optimism
Category

21st Century and Contemporary Indian Modern Pendant Necklaces

Materials

Diamond, White Diamond, Sterling Silver

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Diamond Key For Sale on 1stDibs

You are likely to find exactly the diamond key you’re looking for on 1stDibs, as there is a broad range for sale. Every item for sale was constructed with extraordinary care, often using Gold, 18k Gold and Yellow Gold. In our selection of items, you can find a vintage example as well as a contemporary version. Finding the perfect diamond key may mean sifting through those created during different time periods — you can find an early version that dates to the 19th Century and a newer variation that were made as recently as the 21st Century. For this particular accessory, there are many different carat weights to choose from, but .5 Carat and 1 Carat versions are of considerable interest. Creating a diamond key has been a part of the legacy of many jewelers, but those produced by Tiffany Co., Georgios Collections Inc and Butani are consistently popular. See these pages for a round cut iteration of this accessory, while there are also brilliant cut cut and princess cut cut versions available here, too. Most of our diamond key for sale are for women, but there are 117 pieces available to browse for men.

How Much is a Diamond Key?

The price for a diamond key starts at $95 and tops out at $49,000 with these necklaces, on average, selling for $3,000.

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.