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AnaKatarina Yellow Gold and Diamond Love Key Studs
By AnaKatarina
Located in Dedham, MA
18k White Gold, .0384ct Diamond The first agreement inspired the Impeccable words collection in
Category

21st Century and Contemporary American Contemporary Stud Earrings

Materials

Diamond, 18k Gold, Yellow Gold

Dimos 18k Gold Greek Key Diamonds Band Ring
Located in Athens, GR
minimal style of the Meander with thin clean lines that flows and set with 0.78 carats natural diamonds
Category

21st Century and Contemporary Greek Classical Greek Band Rings

Materials

Diamond, 18k Gold

Mozafarian Diamond Yellow Gold Key of Life Amulet Pendant
Located in London, England
A collaboration between Mozafarian and Katarina Tarazi, the Key of Life Amulet embodies infinity in
Category

21st Century and Contemporary European Artisan Pendant Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

Tiffany Co. Platinum Diamond Rose Key Pendant Necklace, Estate
By Tiffany Co.
Located in La Jolla, CA
This Tiffany & Co. necklace is crafted of platinum with a 1.5 inch rose key shaped pendant that
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Platinum

Fascinating .70 Carats Diamonds Gold Greek Key Fashion Ring
Located in Scottsdale, AZ
Thank you for viewing our newest addition. This gorgeous ring featuring the Greek Key design
Category

20th Century Greek Contemporary Fashion Rings

Materials

Diamond, White Diamond, 18k Gold, Yellow Gold

Diamond Rose Gold and Silver Lock and Key Necklace
By Michael Barin
Located in Carmel by the Sea, CA
. Adorned with 0.3 carats of White Diamonds, this unique pendant is accompanied by a removable, Hand Crafted
Category

2010s American Contemporary Chain Necklaces

Materials

Diamond, White Diamond, 14k Gold, Rose Gold, Silver

Hand Forged Diamond Silver Gold Lock and Key Pendant
By Michael Barin
Located in Carmel by the Sea, CA
chain. Adorned with 0.3 carats of Vivid Yellow Diamonds, this unique pendant is accompanied by a
Category

2010s American Contemporary Chain Necklaces

Materials

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

Diamond Love Key Pendant in in 18k Pink Gold
By AS29
Located in Hong Kong, HK
Diamond Love Key Pendant in in 18K Pink Gold The key to our heart is love, and you can carry it
Category

2010s Hong Kong Contemporary Pendant Necklaces

Materials

Diamond, Rose Gold, Gold, 18k Gold

Dimos 18k Gold Greek Key Cuff with Black Diamonds
Located in Athens, GR
Greek key cuff bracelet handmade by Dimos in 18 karat gold with 4.02 carats natural brilliant cut
Category

Antique 15th Century and Earlier Greek Classical Greek Cuff Bracelets

Materials

Black Diamond, 18k Gold

AnaKatarina Yellow Gold and Diamond Love Key Charm Necklace
By AnaKatarina
Located in Dedham, MA
18k Yellow Gold, .0192ct Diamonds The first agreement inspired the Impeccable words collection in
Category

21st Century and Contemporary American Contemporary Pendant Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

Greek Key pattern style Diamond Emerald Turquoise Cocktail Ring
Located in Greenwich, CT
Greek Key pattern style diamond cocktail ring, the central circular old European cut diamond with a
Category

21st Century and Contemporary Unknown Art Deco Cocktail Rings

Materials

Diamond, Emerald, Turquoise, Platinum

Doryn Wallach White Diamond and Gold Greek Key Bracelet
Located in New York, NY
Doryn Wallach's Greek Key cuff bracelet features 0.30 carats of white diamonds, in finely ribbed
Category

21st Century and Contemporary American Contemporary Cuff Bracelets

Materials

White Diamond, 18k Gold

Greek Key 18 Karat Gold and Diamond Cocktail Ring
Located in Palm Beach, AU
The Stenmark Greek Key cocktail ring in 18 karat yellow gold and 0.70 carats of G colour VS1
Category

21st Century and Contemporary Australian Modern Cocktail Rings

Materials

Diamond, 18k Gold

18 Carat White Gold Diamond Set Tiffany Style Key Pendant
Located in Oxted, Surrey
18ct White Gold Diamond Set Tiffany Style Key Pendant. Approximate total Diamond weight : 0.75ct
Category

2010s British Modern Pendant Necklaces

Materials

Diamond, White Diamond, 18k Gold

Tiffany Co. Key Platinum Diamond Necklace Primerose 0.98 Carat
By Tiffany Co.
Located in Geneva, CH
Tiffany & Co diamond necklace in platinum. The famous modele "Enchant" Primrose. Authentic
Category

21st Century and Contemporary American Modern Pendant Necklaces

Materials

Diamond, 18k Gold, White Gold, Platinum

14 Karat Rose Gold Real House Key Pendant with Diamond.
Located in Newport Beach, CA
sparkling white diamonds set completely around the key and is beautifully detailed with a modern brushed
Category

Antique 15th Century and Earlier Italian Gothic Revival More Jewelry

Materials

Diamond, 14k Gold

Dimos 18k Gold Greek Key Cocktail Rubies and Diamonds Pendant
Located in Athens, GR
Greek key pendant in 18 karats yellow gold set set with 1.80 carats of Rubies and 0.23 carats
Category

Antique 15th Century and Earlier Greek Classical Greek Pendant Necklaces

Materials

Diamond, Ruby, 18k Gold

Doryn Wallach Black and White Diamond Gold Greek Key Bracelet
Located in New York, NY
Doryn Wallach's Greek Key cuff bracelet features 0.60 carats of white and black diamonds, in finely
Category

21st Century and Contemporary American Contemporary Cuff Bracelets

Materials

Black Diamond, 18k Gold

Greek Key Diamond, Pink Sapphire and Tsavorite Garnet Drop Earrings
Located in Palm Beach, AU
The STENMARK Greek Key drop earrings in 18 karat white gold, with 2.83 carats of G colour, VS1
Category

2010s Australian Modern Drop Earrings

Materials

Diamond, Pink Sapphire, Tsavorite, 18k Gold

Vintage 18 Karat Lock and Key Ruby and Diamond Necklace
Located in Pikesville, MD
key. 34 gorgeous round rubies have an approximate total weight of 2.00 carats. 19 diamonds have an
Category

1990s Unknown Contemporary Pendant Necklaces

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Art Deco Emerald Diamond Target Ring with Key Design Detail
Located in London, GB
A great looking Art Deco ring with an unusual key design feature. It is in lovely condition and
Category

Early 20th Century British Art Deco Engagement Rings

Materials

Diamond, Emerald

0.20ctw Diamond Clover Top Key Pendant Necklace in 14K White Gold
Located in Vienna, VA
0.20ctw Diamond Clover Top Key Pendant Necklace in 14K Diamond Clover Top Key Pendant Necklace 14K
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, White Gold, 14k Gold

Dimos 18k Gold Greek Key Reversible Ring with Diamonds and Enamel
Located in Athens, GR
Perhaps the most Modern edition of the Greek key with 0.52 carats natural brilliant cut diamonds. A
Category

2010s Greek Classical Greek Band Rings

Materials

Diamond, 18k Gold, Enamel

Famous Greek Mapamenos-Natepas 4 Carats Diamonds Gold Greek Key Bracelet
Located in Scottsdale, AZ
Thank you for viewing our newest addition. This gorgeous bracelet featuring the Greek Key design
Category

20th Century Greek Contemporary Clamper Bracelets

Materials

Diamond, White Diamond, 18k Gold, White Gold

Early Art Deco Classic Greek Key Center Diamond Platinum Gold Cufflinks
Located in Palm Beach, FL
tested them. Each of the 4 bezel set diamond centers have a sunny ray motif around the diamond. The
Category

Early 20th Century Art Deco Cufflinks

Materials

Diamond, 18k Gold, Platinum

Greek Key White Gold Diamond Ruby Spinel Pink Sapphire Cuff Braclet
Located in Palm Beach, AU
The STENMARK Greek Key cuff in lustrous, highly-polished 14 karat white gold, with 147 of G colour
Category

2010s Australian Modern Cuff Bracelets

Materials

Diamond, Ruby, Pink Sapphire, Spinel, Tsavorite, 14k Gold

Bloom Diamond and Mother of Pearl Key Necklace in 18k White Gold
By Butani
Located in Hong Kong, Kowloon
Bloom Diamond and Mother-of-Pearl Key Necklace in 18K White Gold Inspired by the exquisite petals
Category

2010s Hong Kong Pendant Necklaces

Materials

Diamond, Pearl, White Gold

Bloom Diamond and Mother of Pearl Key Necklace in 18k Yellow Gold
By Butani
Located in Hong Kong, Kowloon
Bloom Diamond and Mother-of-Pearl Key Necklace in 18K Yellow Gold Inspired by the exquisite petals
Category

2010s Hong Kong Pendant Necklaces

Materials

Diamond, Pearl, Yellow Gold

Bloom Diamond and Mother of Pearl Key Necklace in 18k Rose Gold
By Butani
Located in Hong Kong, Kowloon
Bloom Diamond and Mother-of-Pearl Key Necklace in 18K Rose Gold Inspired by the exquisite petals
Category

2010s Hong Kong Pendant Necklaces

Materials

Diamond, Pearl, Rose Gold

South Sea Pearl Diamond Charm Meander Pattern Greek Fret Key Gold Bracelet
Located in Bangkok, TH
Meander Pattern/ Greek Fret/ Key Bracelet in 18K Gold with Detachable Diamond and South Sea Pearl
Category

Late 20th Century Thai Charm Bracelets

Materials

Diamond, South Sea Pearl, Gold, 18k Gold

Triple Row Baguette Piano Key Band
Located in METAIRIE, LA
exceptional quality Diamonds in 14 Karat White Gold, set in the classic triple-row design. Also a great
Category

Vintage 1980s Engagement Rings

Materials

Diamond, 14k Gold, White Gold

Kian Design 18 Carat Yellow Gold Sol Key Round Brilliant Cut Diamond Necklace
By Kian Design
Located in South Perth, AU
Sol Key Pendant This unique 18 carat pendant features a beautiful sol key. This pendant
Category

2010s Australian Art Deco Pendant Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

Greek Key 18 Karat Gold Diamond Tsavorite Pink Sapphire Cuff Earrings Suite Set
Located in Palm Beach, AU
The STENMARK Greek Key drop earrings in 18 karat white gold, with 2.83 carats of G colour, VS1
Category

2010s Unknown Contemporary Drop Earrings

Materials

White Diamond, Tsavorite, 18k Gold

Vintage Key of Heart 2.50 Carat Moonstone 1.20 Carat Diamond 18 Karat Pendant
Located in Napoli, IT
scale Key of my Heart classic theme of Sentimental jewellery beautifully designed pendant Set with a
Category

Vintage 1930s Retro Pendant Necklaces

Materials

Diamond, Moonstone, 18k Gold

Vintage Palladium Diamond Greek Key Ring 950 Purity Band Size J 4.75 Wedding
Located in Camelford, GB
PALLDIUM DIAMOND 4.5 MM GREEK KEY WEDDING BAND RING DETAILS Material: 950/1000 Palladium Style: Greek Key
Category

Late 20th Century British Art Deco Wedding Rings

Materials

Diamond, Palladium

Dimos 18k Gold Greek Key Cocktail Pendant
Located in Athens, GR
Greek key pendant in 18 karats yellow gold set set with colorful gems, 2.40 carats of Rubies
Category

2010s Greek Classical Greek Pendant Necklaces

Materials

Diamond, Emerald, Ruby, Blue Sapphire, 18k Gold

Dimos 18k Gold Greek Key Cocktail Ring
Located in Athens, GR
Greek key ring in 18 karats yellow gold set with 0.72 carats of Rubies and Emeralds. The frame
Category

Antique 15th Century and Earlier Greek Classical Greek Cocktail Rings

Materials

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

Antique 15 Karat Gold Diamond and Black Enamel Lock and Key Brooch Pin, 1880s
Located in Sydney, NSW
A 15k yellow gold black enamel diamond lock and key brooch - a late 19th century pin of a unique
Category

Antique 1880s Romantic Brooches

Materials

Diamond, 15k Gold, Gold, Enamel

Dimos 18k Gold Greek Key Cocktail Pendant
Located in Athens, GR
Happy Greek key collection. This large pendant in 18 karats yellow gold it’s one of the most
Category

Antique 15th Century and Earlier Greek Classical Greek Pendant Necklaces

Materials

Diamond, Emerald, Ruby, Blue Sapphire, 18k Gold, Yellow Gold

Key Pendant with 0.43 Carat of Diamond on Cable Chain in 18 Karat White Gold
By By Design Jewelers
Located in Coral Gables, FL
18k White Gold Key shaped pendant hangs from an 18k white gold 20" length 1.5mm cable chain. The
Category

2010s American Contemporary Pendant Necklaces

Materials

Diamond, White Diamond, 18k Gold, White Gold

Midcentury 2.57 Carat Sapphire Piano Key Cocktail Ring
Located in METAIRIE, LA
In a Mid-Century timeless design, this Star Sapphire & Baguette Piano Key Platinum Cocktail Ring
Category

Vintage 1960s Art Deco Engagement Rings

Materials

Sapphire, Diamond, Platinum

Dimos 18k White Gold Greek Key Cocktail Pendant
Located in Athens, GR
Happy Greek key collection. This pendant in 18 karats white gold it’s one of the most recognizable
Category

Antique 15th Century and Earlier Greek Classical Greek Pendant Necklaces

Materials

Diamond, Emerald, Ruby, Blue Sapphire, 18k Gold, White Gold

Dimos 18k Gold Goddess Athena Greek Key Pendant
Located in Athens, GR
Key design. A statement piece that can be added anywhere due to the opening bezel and can be worn with
Category

Antique 15th Century and Earlier Greek Greek Revival Pendant Necklaces

Materials

Diamond, 18k Gold, Sterling Silver

Dimos 18k White Gold Greek Key Pendant with Emeralds
Located in Athens, GR
Greek key collection. This pendant in 18 karats white gold it’s one of the most recognizable
Category

2010s Greek Classical Greek Pendant Necklaces

Materials

Diamond, Emerald, White Gold

Dimos 18k Gold Greek Key Cocktail Band Ring
Located in Athens, GR
Sapphires. The frame around it is the pave setting with 0.40 carats brilliant cut diamonds that adds light
Category

Antique 15th Century and Earlier Greek Classical Greek Band Rings

Materials

Diamond, Emerald, Ruby, Blue Sapphire, 18k Gold, Yellow Gold

Dimos 18k Gold Greek Key Band Ring with Sapphires
Located in Athens, GR
Greek key band ring in 18 karats yellow gold Greek Key set it with 1.70 carats of blue Sapphires
Category

Antique 15th Century and Earlier Greek Classical Greek Band Rings

Materials

Diamond, Sapphire, 18k Gold

Dimos 18k Gold Greek Key Band Ring with Rubies
Located in Athens, GR
Greek key band ring in 18 karats yellow gold with the one of the most recognizable designs
Category

Antique 15th Century and Earlier Greek Classical Greek Band Rings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Dimos 18k White Gold Greek Key Cocktail Band Ring
Located in Athens, GR
and 0.15 carats of natural brilliant cut diamonds that adds light and luxury to the piece
Category

Antique 15th Century and Earlier Greek Classical Greek Band Rings

Materials

Diamond, Emerald, Ruby, Blue Sapphire, White Gold

Vintage 9ct Gold 18 Key Diamond Paste Birthday Pendant Necklace Rope 375 18 Inch
Located in Camelford, GB
GOLD DETAILED 18TH BIRTHDAY GEM SET KEY PENDANT NECKLACE PENDANT DESCRIPTION DETAILS Material: Solid
Category

Mid-20th Century British Contemporary Pendant Necklaces

Materials

Zircon, Gold, 10k Gold, Yellow Gold

Georgian Key to My Heart Rare 18 Karat Acrostic Brooch
Located in Napoli, IT
totalling approx .45 Ct – 1old mine cut diamond of approx .15 Ct Measures: key is 40 x 18 mm. - heart is 9 x
Category

Antique Early 1800s British Georgian Brooches

Materials

Amethyst, Diamond, Emerald, Garnet, 18k Gold

Tiffany Co. Daisy Key Pendant/Necklace, Extra Large Pendant, Rose Gold w. Box
By Tiffany Co.
Located in Miami, FL
About the Item: Brilliant beacons of optimism and hope, Tiffany Keys are radiant symbols of a
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, 18k Gold, Rose Gold

A Gold and Rock Crystal Pocket Watch Key Necklace by Monica Rich Kosann
By Monica Rich Kosann
Located in New York, NY
An 18K Yellow Gold Rectangular Pocket Watch Key Necklace with Rock Crystal and Diamond Accents
Category

2010s Thai Contemporary Drop Necklaces

Materials

Blue Sapphire, Diamond, Rock Crystal, 18k Gold

Hand Engraved Working Lock and Key Pendant 14 Rose Gold and Organic Silver
By Michael Barin
Located in Granada Hills, CA
allowing it to be opened with a turn of the key.
Category

21st Century and Contemporary Art Deco Pendant Necklaces

Materials

Diamond, 18k Gold, Rose Gold, Silver

Hand Engraved Working Lock and Key Pendant 18 Karat Gold and Organic Silver
By Michael Barin
Located in Granada Hills, CA
, accented with a sprinkle of diamonds. The delicate tone of yellow gold complemented by the rustic, patina
Category

21st Century and Contemporary American Art Deco Pendant Necklaces

Materials

Diamond, 18k Gold, Silver, Gold

Cober "Wave" with 3 Diamonds of 0.11, 0.07 and 0.05 Carat White Gold Design Ring
By Vincent Cober
Located in OSS, NH
surprise a loved one with this spectacular 14K white gold wave ring with brilliant-cut diamonds. Key
Category

2010s Dutch Contemporary Three-Stone Rings

Materials

Diamond, Gold, 14k Gold, White Gold

Geraldo Diamond Alliance White Gold Ring
Located in Ramat Gan, IL
Capture the essence of eternal love and elegance with the Geraldo Diamond Alliance Ring—a stunning
Category

20th Century Israeli Contemporary Bridal Rings

Materials

Diamond, White Diamond, 18k Gold

Sabine Getty Diamond Gold "Cross" Ring
By Sabine Getty
Located in London, GB
jewellery line consists of antiqued rose gold, diamonds and rubies, and key designs include an elegant
Category

2010s Italian Fashion Rings

Materials

Diamond, White Diamond, 18k Gold, Gold, Rose Gold

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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.