Tiffany & Co. Diamond 18k yellow gold Heart Pendant Necklace
By Tiffany & Co.
Located in Guangzhou, CN
Key Features & Specifications Design: A heart-shaped pendant with diamonds set along the edge, often in a halo or prong style.
Tiffany & Co. Diamond 18k yellow gold Heart Pendant Necklace
By Tiffany & Co.
Located in Guangzhou, CN
Key Features & Specifications Design: A heart-shaped pendant with diamonds set along the edge, often in a halo or prong style.
18 Karat Yellow Gold Diamond Toggle Necklace with Key and Lock Charms 79.4 Grams
By Harbor Diamonds
Located in New York, NY
Bold and whimsical, this statement toggle necklace is crafted in rich 18 karat yellow gold and weighs a substantial 32.4 grams. The chunky chain features an elegant toggle clasp ador...
Diamond, 18k Gold, Yellow Gold
Certified Natural Vivid Red Spinel and Diamond Engagement Or Cocktail Ring
Located in Bangkok, Thailand
Key Features 18 K White Gold : 5.04 grams Natural Spinel from Myanmar - 1.88 carats ( 7.5 x 5 mm ) Diamonds : Round Diamonds : 0.20 carats; Octagon-Cut Diamonds : 0.47 carats T...
Diamond, Spinel, 18k Gold
Tiffany & Co. Keys Petals Diamond Platinum Key Pendant Necklace
By Tiffany & Co.
Located in Banbury, GB
Taxes / $14,900 Excl. Taxes Model Keys Metal Platinum Stones Diamond Weight Approximately 12.38 g Length Approximately 52 cm Condition Excellent __________________________________ **...
Diamond, Platinum
J. Birnbach GIA 7.82 E SI2 Emerald Cut Diamond Three-Stone Ring
By J. Birnbach
Located in New York, NY
The sleek platinum mounting keeps the silhouette streamlined while maximizing the visual impact of the diamonds. Key Details - 7.82 carat emerald cut diamond, E SI2 (GIA) - Tapered...
Diamond, Platinum
J. Birnbach GIA Certified 1.70 Carat D VS1 Oval Diamond Three-Stone Ring
By J. Birnbach
Located in New York, NY
A refined choice for someone who appreciates enduring style and top-tier diamonds. Key Details - 1.70 carat oval brilliant diamond, GIA certified D VS1 - Oval side stones 0.40 tota...
Diamond, Platinum
J. Birnbach GIA Certified 4.58 Carat K SI1 Old Mine Diamond Solitaire Ring
By J. Birnbach
Located in New York, NY
The platinum construction ensures lasting durability and a sleek, polished finish that complements the antique allure of the Old Mine Cut diamond. Key Features: - Center: 4.58 cara...
Diamond, Platinum
Tiffany & Co. Keys Platinum 0.64ct Diamond Crown Key Pendant TI20-031626
By Tiffany & Co.
Located in Southampton, PA
This Crown Key pendant from the Tiffany & Co. Keys collection is simply dazzling.
Diamond, Platinum
Boregaard GIA 2.35 Carat Fancy Brownish Yellow Hexagon Diamond Solitaire Ring
By Pedro Boregaard
Located in New York, NY
Signed by Boregaard, this ring marries contemporary artistry with the allure of rare fancy colored diamonds. Key Details - 2.35 carat hexagon cut diamond, GIA certified fancy brown...
Diamond, Yellow Gold
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 plain gold and the smaller ones has some enamel floral design on them. Range from 0.7-1...
Yellow Gold, Enamel
J. Birnbach GIA 3.54 Carat I SI1 Radiant Cut Diamond Double Claw Solitaire Ring
By J. Birnbach
Located in New York, NY
Sized at 6, this ring is a timeless yet impactful design perfect for someone who appreciates clean lines and substantial diamonds. Key Details - 3.54 carat radiant cut center diamo...
Diamond, 14k Gold, White Gold
$7,200Sale Price|20% Off
GIA Certified 1 Carat Pear Cut Diamond Pendant Necklace
By Antinori Fine Jewels
Located in Chicago, IL
This adjustable necklace is designed to grace your neckline with a captivating natural diamond. Key Features: The necklace is delicately crafted, weighing 2.4 grams, ensuring comfo...
Diamond, White Diamond, 14k Gold, White Gold
Tiffany Diamond Platinum Keys Daisy Key Pendant Necklace Size L
By Tiffany & Co.
Located in Guangzhou, CN
Tiffany & Co. Tiffany Keys Daisy Key Pendant Necklace, appearing in platinum with a round brilliant diamond at the center of the floral head.
Tiffany & Co. Keys 18K White Gold Diamond Clover Key Pendant Necklace
By Tiffany & Co.
Located in Houston, TX
Brand: Tiffany & Co. Gender: Ladies Metal Type: 18K White Gold Chain Length: 24.00 inches Pendant Length: 2.00 inches Chain Width 2.65 mm Pendant Width: 18.00 mm Total We...
Diamond, Gold, 18k Gold, White Gold
Certified Natural Emerald Zambian Pear Shape Ring With Oval Ruby And Diamonds
Located in Bangkok, Thailand
With a combined weight of 4.09 grams, this piece is a nice blend of vibrant gemstones The stones of this ring has been chosen to create a harmonious balance between the emerald’s l...
Diamond, Emerald, Ruby, 18k 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 Approx Pendant size 18x5 mm Approx Base Metal Yellow Gold Gold Weight 0.45 Grams Ap...
Diamond, 14k Gold, Yellow Gold
$4,950 / set
14k Gold Diamond Lock & Key Pendant Necklace
Located in Beverly Hills, CA
This 14k gold necklace with a diamond-set lock and key pendant. The lock features a pave diamond face with a keyhole cutout, while the matching key is set with diamonds down the shaft.
Diamond, Gold, 14k Gold
Tiffany & Co. 0.44ct Diamond Victoria Key Pendant
By Tiffany & Co.
Located in London, GB
This beautiful ‘Victoria Key’ pendant comes from the designer Tiffany & Co. and features a diamond circle vine design.
Diamond, Platinum
TIFFANY & CO. Diamond Platinum Key Pendant Necklace
By Tiffany & Co.
Located in New York, NY
This fabulous Tiffany & Co. necklace features a key pendant crafted in platinum and set with round brilliant-cut E-F-G VVS1-VVS2 diamonds.
Diamond, Platinum
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 original chain.
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 with brilliant-cut natural diamonds.
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.
Diamond, 18k Gold, White Gold
$23,200Sale Price|20% Off
10 Carat Diamond Tennis Bracelet
By Antinori Fine Jewels
Located in Chicago, IL
Crafted in exquisite 14K White Gold, this bracelet boasts a total weight of 10.86 ct of Natural Round Brilliant Cut Diamonds. Key Features: This bracelet, with a weight of 16 grams, ...
Diamond, White Diamond, Gold, 14k Gold, White Gold
TIFFANY Co. Platinum Diamond Oval Key Pendant Necklace
By Tiffany & Co.
Located in Los Angeles, CA
TIFFANY & Co. Platinum Diamond Oval Key Pendant Necklace Metal: Platinum Chain: 23.5" Pendant: 30mm(1.18") long Weight: 5.60 grams Diamond: round brilliant diamonds Hallmark: TIFFAN...
Diamond, Platinum
Tiffany & Co. Keys 18K White Gold Pave Diamond Mini Crown Key Pendant Necklace
By Tiffany & Co.
Located in Houston, TX
Brand: Tiffany & Co. Gender: Ladies Chain Length: 18.00 inches Pendant Length: 1.50 inches Chain width: 1.20 mm Pendant Width: 13.35 mm Total Weight: 4.48 grams One 18K w...
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 Information Natural Diamonds Carat(s): .03ctw Cut: Round Brilliant Color: F - G Clarity: ...
Diamond, 18k Gold, White Gold
Tiffany and Co. Diamond Kaleidoscope Key Necklace
By Tiffany & Co.
Located in Houston, TX
This exquisite necklace features a captivating design adorned with a total carat weight of 1.18 carats of mixed-cut diamonds in marquise, princess, and round shapes, bringing a radia...
Diamond, Platinum
Spark Creations Diamond-set Lock & Key Necklace
By Spark Creations
Located in Litchfield, CT
Rife with fine detail and sparkly diamonds, we can't help but fall in love with this lock & key necklace.
Diamond, 18k Gold, White 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 5 g Earrings measure 24mm long $6000 appraisal certificate to accompany
Diamond, 14k Gold, White Gold
Tiffany & Co. Platinum Diamond Oval Key Pendant
By Tiffany & Co.
Located in New York, NY
Tiffany & Co. Platinum Diamond Oval Key Pendant PRIMARY DETAILS SKU: 153602 Listing Title: Tiffany & Co.
Platinum
Vintage 18K Two Tone Gold Greek Key Diamond Earrings
Located in Miami, FL
The iconic Greek Key motif is accented by sparkling round brilliant diamonds set across the white gold top bar, adding refined contrast and brilliance.
Diamond, Gold
TIFFANY & Co. Platinum .34ct Diamond Victoria Key Pendant Medium
By Tiffany & Co.
Located in Los Angeles, CA
TIFFANY & Co. Platinum .34ct Diamond Victoria Key Pendant Medium Metal: Platinum Pendant: 1.59" long, medium size Weight: 4.70 grams Diamond: round brilliant diamonds, carat total w...
Diamond, Platinum
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 with precision, this exquisite piece features a dazzling array of 164 pave set diamond...
Diamond, Gold, 18k 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 diamonds VS-SI clarity and F-G colors.
Diamond, 18k Gold, White Gold
Tiffany & Co. Diamond Ruby Platinum Quatrefoil Victoria Key Pendant
By Tiffany & Co.
Located in Philadelphia, PA
Designed as a stylized key displaying a pierced quatrefoil motif head with fanning accents Centering a bead set round cut ruby- medium red in color Bead and prong set throughout with...
Diamond, Ruby, Platinum
Diamond and 18 Karat Yellow Gold Key Pendant
Located in Tampa, FL
Diamond and 18 Karat Yellow Gold Key Pendant
Diamond, Yellow 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 dimension 58 mm x 22 mm With Bail 63 mm -Marquise diamonds, carat total weight .25 -Square...
Diamond, Platinum
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 Composed of 18k Yellow Gold and boasting dazzling Diamonds of around 0.14 carats, this P...
Diamond, 18k Gold, Yellow Gold
Key necklace in white gold with diamonds
By Naz Hariri
Located in London, GB
Brilliant beacons of optimism and hope, Naz Hariri’s Keys are radiant symbols of a bright future. Dazzling diamonds accent this pendant's elegant open design. 18k gold, 4.7 grams 61....
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 details.
Diamond, 18k Gold, Rose Gold
Tiffany & Co Diamond 18k Yellow Gold Key Pendant Necklace
By Tiffany & Co.
Located in New York, NY
Elegant and symbolic, this Diamond 18K Yellow Gold Key Pendant Necklace from Tiffany & Co. embodies timeless sophistication and meaningful design.
Diamond, Gold, 18k Gold, Yellow Gold
$17,600Sale Price|20% Off
Tiffany & Co. Platinum Diamond and Emerald Tiffany Keys Pendant Necklace
By Tiffany & Co.
Located in Chicago, IL
Crafted in platinum, the pendant features an intricate key motif set with brilliant-cut diamonds and vivid emeralds, meticulously matched for size and clarity to create exceptional b...
Diamond, White Diamond, Emerald
Tiffany & Co. 0.07ct Diamond Fleur de Lis Key Pendant
By Tiffany & Co.
Located in London, GB
This sparkling diamond pendant is from Tiffany & Co.’s Iconic key collection.
Diamond, 18k Gold, Yellow 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" long Weight: 9.50 grams Diamond: round brilliant diamonds, carat total weight 1.18 ...
Diamond, Platinum
Tiffany & Co. 2010's Diamond Platinum Contemporary Kaleidoscope Key Pendant
By Tiffany & Co.
Located in Philadelphia, PA
Designed as a stylized skeleton style key with a pierced head displaying a kaleidoscope motif Bead and bezel set throughout with marquise, princess, and round brilliant cut diamonds ...
Diamond, Platinum
Tiffany & Co. 2010's Diamond Platinum Contemporary Petals Key Pendant
By Tiffany & Co.
Located in Philadelphia, PA
Designed as a stylized key with a pierced floral motif head Bead set throughout with round brilliant cut diamonds Weighing approximately 1.18 carats total G color with VS1 clarity Co...
Diamond, Platinum
$1,584Sale Price|40% Off
Designer Tiffany Diamond Heart Key Necklace 18kt White Gold 0.12ctw
By Tiffany & Co.
Located in West Hempstead, NY
Designer Tiffany & Co. 18kt white gold Heart key pendant design 0.12ctw natural FG VS round diamonds 18 inch length 3.16 grams Spring ring clasp Excellent pre loved condition A t...
Diamond, 18k Gold, White Gold
Tiffany & Co. Rose Gold Diamond Heart Key Pendant
By Tiffany & Co.
Located in New York, NY
Tiffany & Co. Rose Gold Diamond Heart Key Pendant PRIMARY DETAILS SKU: 153291 Listing Title: Tiffany & Co.
Rose Gold
Tiffany & Co. White Gold Diamond Crown Key Pendant
By Tiffany & Co.
Located in New York, NY
Tiffany & Co. White Gold Diamond Crown Key Pendant PRIMARY DETAILS SKU: 153915 Listing Title: Tiffany & Co.
White Gold
Tiffany & Co. 2010s Diamond Platinum Enchanted Primrose Butterfly Key Pendant
By Tiffany & Co.
Located in Philadelphia, PA
Designed as a stylized key with a pierced scrolling primrose flower motif head Bezel and bead set with pear, marquise, and round brilliant cut diamonds Weighing approximately 0.98 ca...
Diamond, Platinum
Tiffany & Co. Yellow Gold Diamond Clover Key Pendant
By Tiffany & Co.
Located in New York, NY
Tiffany & Co. Yellow Gold Diamond Clover Key Pendant PRIMARY DETAILS SKU: 155694 Listing Title: Tiffany & Co.
Yellow Gold
14K White Gold Diamond Heart Key Pendant Necklace 18" #25123
Located in Washington Depot, CT
14K White Gold Diamond Heart Key Pendant Necklace This sparkling heart key pendant features 22 round brilliant cut diamonds set in classic 14K white gold.
Diamond, 14k Gold, White Gold
18k White Gold 3.50ctw Pavé Diamond Greek Key Pendant Necklace
Located in Boca Raton, FL
18k White Gold 3.50ctw Pavé Diamond Greek Key Pendant Necklace Style: Pavé Diamond Greek Key Pendant Necklace Material: 18k White Gold Pendant Design: Greek key / maze motif square ...
Diamond, Gold, White Gold, 18k Gold
Georgios Collections 18 Karat Yellow Gold Greek Key Diamond Earrings
By Georgios Collections Inc
Located in Astoria, NY
The iconic meander (Greek key) motif represents infinity and unity, making these earrings both meaningful and elegant.
Aquamarine, Diamond, White Diamond, Gold, 18k Gold, Rose Gold, White Gol...
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 pavé set with round brilliant cut diamonds, mounted with a plain polished bale, st...
Diamond, Gold, 18k Gold, White Gold
Tiffany &Co Victoria Key Platinum Diamond and Ruby Pendant Necklace
By Tiffany & Co.
Located in Boca Raton, FL
Tiffany &Co Victoria Key Platinum Diamond and Ruby Pendant Necklace Brand: Tiffany & Co.
Diamond, Ruby, Platinum
$479Sale Price|20% Off
10K White Gold Heart-Key Pendant with Sparkling Diamonds
Located in New York, NY
Unlock the beauty of love and elegance with this stunning white gold pendant, designed in the shape of a delicate key. The heart-shaped top is encrusted with shimmering diamonds, mak...
Diamond, 10k Gold, White Gold
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 rings, vintage engagement rings or Art Deco engagement rings.
Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.