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Real Diamond Pave Horseshoe Key Disc Charm Pendant Necklace 18 Karat Yellow Gold
By Spectrum Jewels
Located in Diera, Dubai
Embrace the timeless elegance and a touch of luck with this Real Diamond Pave Horseshoe Key Disc
Category

21st Century and Contemporary Indian Modern Drop Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

1.38 Carat Greek Key Maze Geometric Pavé Diamond Bracelet in 18K Rose Gold
Located in Wan Chai District, HK
Celebrate timeless elegance with this stunning Greek Key Diamond Bracelet in 18K Rose Gold
Category

21st Century and Contemporary Hong Kong Contemporary Link Bracelets

Materials

Diamond, Gold, 18k Gold, Rose Gold

Georgios Collections 18 Karat Yellow Gold Diamond Ring with the Greek Key Design
By Georgios Collections Inc
Located in Astoria, NY
S. Georgios designer 18 Karat Yellow Gold Hand Made Diamond Ring with the Greek Key design that
Category

21st Century and Contemporary Greek Classical Greek Band Rings

Materials

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

Georgios Collections 18 Karat Rose Gold Greek Key Design Wide Ring with Diamonds
By Georgios Collections Inc
Located in Astoria, NY
S. Georgios design 18 Karat Rose Gold Ring all handmade with the Greek Key design that symbolizes
Category

21st Century and Contemporary Greek Classical Greek Band Rings

Materials

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

Georgios Collections 18 Karat White Gold Diamond the Greek Key Design Band Ring
By Georgios Collections Inc
Located in Astoria, NY
S. Georgios designer 18 Karat White Gold Hand Made Diamond Ring with the Greek Key design that
Category

21st Century and Contemporary Greek Classical Greek Band Rings

Materials

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

Georgios Collections 18 Karat Yellow Gold Diamond and Ruby Greek Key Design Ring
By Georgios Collections Inc
Located in Astoria, NY
This S.Georgios designer 18 Karat Yellow Gold Ring features the Greek Key design symbolizing
Category

21st Century and Contemporary Greek Classical Greek Cocktail Rings

Materials

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

Georgios Collections 18 Karat Yellow and White Gold Diamond Greek Key Band Ring
By Georgios Collections Inc
Located in Astoria, NY
brilliant-cut White Diamonds with a total weight of 0.10 Carat, set in White Gold and accented with Blue
Category

21st Century and Contemporary Greek Classical Greek Band Rings

Materials

Diamond, White Diamond, Blue Diamond, Yellow Diamond, Pink Diamond, Blac...

Georgios Collections 18 Karat Yellow Gold Diamond and Ruby Greek Key Design Ring
By Georgios Collections Inc
Located in Astoria, NY
This S.Georgios designer 18 Karat Yellow Gold Ring features the Greek Key design symbolizing
Category

21st Century and Contemporary Greek Classical Greek Cocktail Rings

Materials

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

Cartier Key to My Heart 18 Karat Yellow Gold Three Heart Textured Key Pin Brooch
By Cartier
Located in New York, NY
A Cartier Key to My Heart Brooch A beautiful pin made by Cartier depicting three intertwined
Category

Antique Late 19th Century Brooches

Materials

Diamond, Gold, 18k Gold, Yellow Gold

GIA Certified 0.65 Carat Fancy Yellowish Green I1 Clarity Diamond
Located in บางรัก, TH
provides an impartial and detailed report on the diamond's key attributes, including its carat weight, cut
Category

2010s Asian Loose Gemstones

Materials

Diamond

Georgios Collections 18 Karat Yellow Gold and White Diamond Greek Key Band Ring
By Georgios Collections Inc
Located in Astoria, NY
brilliant-cut White Diamonds, a total weight of 0.16 Carat, set against a striking wave and Greek key
Category

21st Century and Contemporary Greek Classical Greek Band Rings

Materials

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

Antique Greek Key Pendant of 14k Gold
Located in Lewisburg, PA
Greek key pattern is delicately inlaid with rose cut diamonds, adding a soft, antique sparkle that
Category

Antique Late 19th Century Victorian Pendant Necklaces

Materials

Diamond, Rock Crystal, 14k Gold

GIA Certified 0.19 Carat Fancy Pink Purple VS2 Clarity Diamond
Located in บางรัก, TH
trusted organizations in gemology. The GIA provides an impartial, detailed report on the diamond’s key
Category

2010s Asian Loose Gemstones

Materials

Diamond

GIA Certified 0.31 Carat Faint Pinkish Brown VS1 Clarity Diamond
Located in บางรัก, TH
certification provides a detailed and unbiased report on the diamond's key attributes, including the 4Cs: carat
Category

2010s Asian Loose Gemstones

Materials

Diamond

Lock and Key Round Pave Diamond Charm Necklace Set in 18 Karat White Gold
Located in Scottsdale, AZ
This diamond-encrusted lock and key pendant necklace is a beautiful work of art. The necklace is
Category

21st Century and Contemporary Unknown Contemporary Pendant Necklaces

Materials

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

Key Pendant 18k White Gold Pink Enamel 162 Diamonds total 1.90 ct Amethyst
By Victor Mayer
Located in Pforzheim, DE
Victor Mayer key pendant 18k white gold, pink vitreous enamel, 162 diamonds, total 1.90 ct, G VS
Category

21st Century and Contemporary German Art Deco Pendant Necklaces

Materials

Amethyst, Diamond, 18k Gold, White Gold, Enamel

Key Pendant Necklace 18k White Gold Blue Enamel 44 Diamonds 0.36ct GVS Rubellite
By Victor Mayer
Located in Pforzheim, DE
Victor Mayer key pendant necklace 18k white gold, translucent dark blue vitreous enamel, 44
Category

21st Century and Contemporary German Contemporary Pendant Necklaces

Materials

Diamond, Rubelite, 18k Gold, White Gold, Enamel

Key Pendant 18k White Gold Blue Vitreous Enamel 44 Diamonds 0.36ct GVS Rubellite
By Victor Mayer
Located in Pforzheim, DE
Victor Mayer key pendant 18k white gold, translucent dark blue vitreous enamel, 44 diamonds, total
Category

21st Century and Contemporary German Contemporary Pendant Necklaces

Materials

Diamond, Rubelite, 18k Gold, White Gold, Enamel

GIA Certified 1.02 Carat Fancy Light Brownish Yellow SI2 Clarity Diamond
Located in บางรัก, TH
. GIA’s certification provides an objective, accurate, and detailed report on a diamond's key
Category

2010s Asian Loose Gemstones

Materials

Diamond

Key Pendant Necklace 18k White Gold Grey Enamel 162 Diamonds 1.90 Ct Amethyst
By Victor Mayer
Located in Pforzheim, DE
Victor Mayer key pendant necklace, 18k white gold, falcon grey vitreous enamel, 162 diamonds, total
Category

21st Century and Contemporary German Art Deco Pendant Necklaces

Materials

Amethyst, Diamond, 18k Gold, White Gold, Enamel

18KT Florentine Engraved Key Pendant with Chain
Located in Lynchburg, VA
Florence for over 600 years. It features one round, full-cut diamond in the center of the key measuring .02
Category

2010s Italian Revival Pendant Necklaces

Materials

Diamond, 18k Gold, White Gold, Yellow Gold

Tiffany Co. Trefoil Key Pendant Necklace with Diamonds in 18 Karat White Gold
By Tiffany Co.
Located in Scottsdale, AZ
. The key is embellished with .13 carats of sparkling natural round diamonds, F-G in color and VVS1-VVS2
Category

21st Century and Contemporary Italian Contemporary Pendant Necklaces

Materials

Diamond, Gold, 18k Gold, White Gold

Greek Key Meander Ring in 18Kt White Gold with Square Cut Sapphires and Diamonds
By Nicofilimon the Jewelry Designer
Located in Athens, GR
Greek Key Meander ring handcrafted in 18Kt white gold. Scintillating square cut blue Sapphires race
Category

2010s Greek Modern Band Rings

Materials

Diamond, Sapphire, Gold, 18k Gold, White Gold

Georgios Collections 18 Karat Yellow and White Gold Diamond Greek Key Band Ring
By Georgios Collections Inc
Located in Astoria, NY
White Diamonds, a total weight of 0.07 Carat, set in White Gold for a striking contrasted look. We make
Category

21st Century and Contemporary Greek Classical Greek Band Rings

Materials

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

GIA Certified 0.46 Carat Fancy Yellow SI1 Clarity Diamond
Located in บางรัก, TH
of a diamond’s key characteristics, including its cut, color, clarity, and carat weight. This
Category

2010s Asian Loose Gemstones

Materials

Diamond

Tiffany Co. Diamond Heart Key Pendant with Bead Chain in 18 Karat White Gold
By Tiffany Co.
Located in Scottsdale, AZ
Unlock timeless elegance with this authentic Tiffany & Co. diamond heart key pendant. Crafted in
Category

21st Century and Contemporary Unknown Contemporary Pendant Necklaces

Materials

Diamond, Gold, 18k Gold, White Gold

Lock key stud earring 14K yellow gold diamond ear stud fine luxury jewelry gift
Located in Chicago, IL
Lock key stud earring 14K yellow gold diamond ear stud fine luxury jewelry gift Material Diamond
Category

2010s Indian Art Deco Stud Earrings

Materials

Diamond, Gold, 14k Gold

GIA Certified 0.35 Carat Fancy Purple Pink VS2 Clarity Diamond
Located in บางรัก, TH
. The GIA certificate provides an objective and detailed assessment of the diamond's key characteristics
Category

2010s Asian Loose Gemstones

Materials

Diamond

Key Pendant, 18k White Gold, Grey Enamel 162 Diamonds 1.90 Ct G VS Amethyst
By Victor Mayer
Located in Pforzheim, DE
Victor Mayer key pendant 18k white gold, falcon grey vitreous enamel, 162 diamonds, total 1.90 ct
Category

21st Century and Contemporary German Art Deco Drop Necklaces

Materials

Amethyst, Diamond, 18k Gold, White Gold, Enamel

Brooch shape of a key with carnelian and diamond up to 0.20ct 11.5 gram 18k gold
Located in The Hague, ZH
18k yellow gold brooch in the shape of a key with carnelian and brilliant cut diamond, total 0.20ct
Category

2010s Dutch Modern Brooches

Materials

Carnelian, Diamond, 18k Gold

GIA Certified 1.04 Carat Fancy Light Yellowish Green SI1 Clarity Diamond
Located in บางรัก, TH
. The GIA certification provides an unbiased, detailed report on the diamond's key characteristics
Category

2010s Asian Loose Gemstones

Materials

Diamond

18 Karat Gold Golf Club Style Key Ring
By Olivo Micheletto
Located in Milano, Lombardia
in yellow god while the handle is in white gold Total 18 kt gold weight: gr 8.00 White diamonds ct
Category

Vintage 1970s Italian Modern More Jewelry

Materials

White Diamond, 18k Gold

GIA Certified 0.40 Carat I Colour VVS1 Clarity Diamond
Located in บางรัก, TH
in the diamond industry. GIA certification ensures that the diamond's key characteristics such as
Category

2010s Asian Loose Gemstones

Materials

Diamond

GIA Certified 0.60 Carat Fancy Yellow SI1 Clarity Diamond
Located in บางรัก, TH
accurate and detailed assessment of the diamond's key attributes, including its cut, color, clarity, and
Category

2010s Asian Loose Gemstones

Materials

Diamond

1.01 Ct Emerald Diamond Earrings Designed In Key Shape Made In 18k White Gold
By Artisan NYC
Located in New York, NY
18KT:3.51g, Diamond:0.35ct Emerald:1.01ct"
Category

21st Century and Contemporary Indian Art Deco Stud Earrings

Materials

Diamond, Emerald, 18k Gold, White Gold

GIA Certified 0.53 Carat Fancy Green Yellow SI2 Clarity Diamond
Located in บางรัก, TH
organizations in the world. GIA certification provides an objective, accurate assessment of a diamond's key
Category

2010s Asian Loose Gemstones

Materials

Diamond

TJD 0.15 Ct Diamond 18 KT Rose Gold Flowery Key Necklace with 18 inch Chain
By TJD
Located in New York, NY
This sparkling white diamond necklace creates a style statement. Expertly crafted by our artisans
Category

2010s Indian Modern More Necklaces

Materials

Diamond, Rose Gold, 18k Gold

GIA Certified 0.37 Carat Fancy Light Orangy Yellow VS2 Clarity Diamond
Located in บางรัก, TH
institutions in the diamond industry. The certification provides an official report detailing the diamond's key
Category

2010s Asian Loose Gemstones

Materials

Diamond

GIA Certified 0.58 Carat Fancy Light Pinkish Brown I1 Clarity Diamond
Located in บางรัก, TH
certification provides an unbiased, accurate assessment of a diamond's key characteristics, including its carat
Category

2010s Asian Loose Gemstones

Materials

Diamond

Georgian Key to My Heart Rare Acrostic Brooch
Located in Napoli, IT
– 1 old mine cut diamond of approx .15 Ct Measures: key is 40 x 18 mm. – heart is 9 x 8 mm. (h. x w
Category

Antique Early 19th Century British Georgian Brooches

Materials

Amethyst, Diamond, Emerald, Garnet, Ruby, 18k Gold

GIA Certified 1.01 Carat Fancy Yellow VS1 Clarity Diamond
Located in บางรัก, TH
grading. The GIA provides an unbiased, detailed report on the diamond's key attributes, including carat
Category

2010s Asian Loose Gemstones

Materials

Diamond

GIA Certified 0.50 Carat Faint Pink I1 Clarity Diamond
Located in บางรัก, TH
analysis of the diamond's key attributes, including its cut, color, clarity, and carat weight, often
Category

2010s Asian Loose Gemstones

Materials

Diamond

GIA Certified 2.02 Carat E Colour VVS1 Clarity Diamond
Located in บางรัก, TH
, unbiased assessment of the diamond’s key attributes, including carat weight, cut, color, clarity, and shape
Category

2010s Asian Loose Gemstones

Materials

Diamond

GIA Certified 1.06 Carat Fancy Yellow I3 Clarity Diamond
Located in บางรัก, TH
gemological organizations in the world. The GIA provides an objective and detailed report on a diamond’s key
Category

2010s Asian Loose Gemstones

Materials

Diamond

GIA Certified 0.33 Carat Light Blue SI1 Clarity Diamond
Located in บางรัก, TH
detailed analysis of a diamond's key characteristics, known as the "Four Cs": Cut, Color, Clarity, and
Category

2010s Asian Loose Gemstones

Materials

Diamond

GIA Certified 0.51 Carat Light Blue SI2 Clarity Diamond
Located in บางรัก, TH
certification provides an impartial, detailed report on the diamond's key attributes, including its cut, color
Category

2010s Asian Loose Gemstones

Materials

Diamond

3.2 Ct Diamond Drop Cocktail Key Shape Earrings in 14 Karat White Gold 8 Grams
Located in New York, NY
3.2 Ct Diamond Drop Cocktail Key Shape Earrings in 14 Karat White Gold 8 Grams A fabulous pair of
Category

2010s Dangle Earrings

Materials

Diamond, 14k Gold, White Gold

GIA Certified 1.01 W - X Colour SI1 Clarity Diamond
Located in บางรัก, TH
organizations in the world. The GIA provides an unbiased and detailed report on the diamond's key attributes
Category

2010s Asian Loose Gemstones

Materials

Diamond

GIA Certified 0.50 Carat Fancy Light Green VS2 Clarity Diamond
Located in บางรัก, TH
industry. The GIA certification provides an unbiased, expert evaluation of the diamond's key attributes
Category

2010s Asian Loose Gemstones

Materials

Diamond

GIA Certified 0.70 Carat Light Greenish Yellow SI1 Clarity Diamond
Located in บางรัก, TH
diamond’s key characteristics, including its cut, color, clarity, and carat weight often referred to as the
Category

2010s Asian Loose Gemstones

Materials

Diamond

GIA Certified 0.23 Carat Fancy Intense Pink SI2 Clarity Diamond
Located in บางรัก, TH
provides an objective, detailed report on the diamond’s key characteristics, including its carat weight
Category

2010s Asian Loose Gemstones

Materials

Diamond

GIA Certified 1.00 Carat Fancy Brownish Pink I2 Clarity Diamond
Located in บางรัก, TH
and detailed assessment of the diamond's key characteristics, known as the 4 Cs: Cut, Color, Clarity
Category

2010s Asian Loose Gemstones

Materials

Diamond

GIA Certified 0.39 Carat Fancy Intense Yellow SI1 Clarity Diamond
Located in บางรัก, TH
recognized authority in diamond grading. The GIA provides a thorough, unbiased evaluation of a diamond's key
Category

2010s Asian Loose Gemstones

Materials

Diamond

GIA Certified 0.53 Carat Fancy Pink Brown SI1 Clarity Diamond
Located in บางรัก, TH
authority in diamond grading. The GIA provides an objective, detailed report on a diamond’s key
Category

2010s Asian Loose Gemstones

Materials

Diamond

GIA Certified 0.18 Carat Fancy Orangy Pink SI1 Clarity Diamond
Located in บางรัก, TH
assessment of a diamond's key characteristics, including its cut, color, clarity, and carat weight (often
Category

2010s Asian Loose Gemstones

Materials

Diamond

GIA Certified 0.91 Carat S -T Colour SI2 Clarity Diamond
Located in บางรัก, TH
an objective, reliable assessment of a diamond's key attributes, including its cut, colour, clarity
Category

2010s Asian Loose Gemstones

Materials

Diamond

GIA Certified 0.70 Carat Very Light Pink SI2 Clarity Diamond
Located in บางรัก, TH
. GIA certification provides a detailed, unbiased assessment of a diamond's key characteristics
Category

2010s Asian Loose Gemstones

Materials

Diamond

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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.