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10 Carat Black Onyx Fashion Ring in 14k White Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Fashion Rings

Materials

Diamond, Onyx, White Gold

1.22 Carat Cushion Cut Emerald Baguette Ring in 18k White Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Fashion Rings

Materials

Diamond, Emerald, White Gold

3.55 Carat Spessartite Gemstone Orangy Red Handmade Solitaire Necklace In 14k YG
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

Diamond, 14k Gold, Yellow Gold

Exquisite 11.72 Carat Multi-Color Oval Sapphire Bracelet Set in 14k White Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Bracelets

Materials

Diamond, Sapphire, 14k Gold, White Gold

5.50 Carats Sapphire Fashion earrings in 14K White Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Clip-on Earrings

Materials

Diamond, Sapphire, 14k Gold, White Gold

2.93CT Spine Cushion Cut Gemstone in 18k White Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s Pendant Necklaces

Materials

Diamond, Emerald, Pearl, Green Sapphire, Tanzanite, White Gold, Yellow Gold

6.03 Carat Green Emerald Delicate Handmade Solitaire Necklace In 14k Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

Diamond, Emerald, 14k Gold, Yellow Gold

5.00 Carats Sapphire Dnglae Earrings in 14K White Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Clip-on Earrings

Materials

Diamond, Sapphire, 14k Gold, White Gold

4.95 Carat Square Green Emerald Ring In 18k Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Fashion Rings

Materials

Diamond, Emerald, 14k Gold, Yellow Gold

5.45CT Green Sapphire Octogonal Cut Pendant in 14K White Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s Pendant Necklaces

Materials

Diamond, Emerald, Pearl, Tanzanite, Green Sapphire, White Gold, Yellow Gold

4.99 Carat Weight Gemstone Sapphire, Heart Shape In Platinum 18K Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Fashion Rings

Materials

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

1.73Ct Purplish Pink Sapphire Radiant Delicate Handmade Solitaire Nec. In 14K WG
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

Diamond, Pink Sapphire, 14k Gold, White Gold

TIGI Certifi1ed 10.11 Carat Cushion Cut Blue Sapphire Diam Ring in 18k Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Cocktail Rings

Materials

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

10CTW Semi Precious Pear Cut Gemstone Earrings in 14K Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s Fashion Rings

Materials

Tanzanite, Yellow Gold

10CTW Semi Precious Pear Cut Gemstone Earrings in 14K Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s Fashion Rings

Materials

Tanzanite, Yellow Gold

30CTW Mixed Gemstone Bracelet in 18K White Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s North American Retro Retro Bracelets

Materials

Multi-gemstone, White Gold

1.50 Carat Weight Fashion Earrings In 18K White Gold/Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s Dangle Earrings

Materials

Yellow Gold, White Gold

4.50 Carat Oval Orange Sapphire Ring 18K White Gold Bold Luxurious
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Fashion Rings

Materials

Sapphire, 18k Gold, White Gold

1.52 Carat Oval Cut Emerald Fashion Ring In 14K White Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Fashion Rings

Materials

Emerald, 14k Gold, White Gold

8.70 Carat Green Emerald Fashion Ring In 18k Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Fashion Rings

Materials

Emerald, 18k Gold, Yellow Gold

1.83 Carat Oval Sapphire Blue Fashion Necklaces In 14k White Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

Sapphire, 14k Gold, White Gold

1.18 Carat Oval Sapphire Blue Fashion Necklaces In 14k White Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

Sapphire, 14k Gold, White Gold

2.35 Carat Yellow Sapphire Round Certified &Fashion Necklaces In 14K Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s Chain Necklaces

Materials

Yellow Sapphire, 14k Gold, Yellow Gold

2.89 Carat Oval Sapphire Blue Fashion Necklaces In 14k White Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

Sapphire, 14k Gold, White Gold

2.15 Carat Oval Padparadschah Pink Fashion Necklaces In 14k White Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

14k Gold, White Gold

1.96 Carat Green Emerald Oval Cut Fashion Necklaces In 14K Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

Emerald, 14k Gold, Yellow Gold

1.27 Carat Oval Padparadschah Pink Fashion Necklaces In 14k White Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

14k Gold, White Gold

1.43 Carat Pink Sapphire Oval Fashion Necklaces In 14K Rose Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s Chain Necklaces

Materials

Pink Sapphire, 14k Gold, Rose Gold

14.22 Carat Mixed Cut Emerald Necklace in 14K Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Multi-Strand Necklaces

Materials

Emerald, Yellow Gold, 14k Gold

3.09 Carat Emerald Oval Fashion Necklaces In 14K Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s Chain Necklaces

Materials

Emerald, 14k Gold, Yellow Gold

0.97 Carat Emerald Green Oval Fashion Necklaces In 14K Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s Chain Necklaces

Materials

Emerald, 14k Gold, Yellow Gold

2.07 Carat Oval Padparadschah Purplish Pink Fashion Necklaces In 14k White Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

14k Gold, White Gold

1.88 Carat Emerald Cut Fashion Necklaces In 14K Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s Chain Necklaces

Materials

Emerald, 14k Gold, Yellow Gold

3.02 Carat Cushion Sapphire Peach Pink Fashion Necklaces In 14k White Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

Sapphire, 14k Gold, White Gold

2.99 Carat Oval Cut Sapphire Fashion Necklaces In 14K White Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

Sapphire, 14k Gold, White Gold

1.03 Carat Sapphire Pink Cushion &Fashion Necklaces Berberyn Certified In 14K RG
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s Chain Necklaces

Materials

Sapphire, 14k Gold, Rose Gold

3.18 Carat Oval Tanzanite Blue Fashion Necklaces In 14k Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

Tanzanite, 14k Gold, Yellow Gold

2.57 Carat Sapphire Blue Cushion &Fashion Necklaces Berberyn Certified In 14K WG
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s Chain Necklaces

Materials

Sapphire, 14k Gold, White Gold

1.51 Carat Emerald Cushion Fashion Necklaces In 14K Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s Chain Necklaces

Materials

Emerald, 14k Gold, Yellow Gold

1.04 Carat Asscher Emerald Green Fashion Necklaces In 14k Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

Emerald, 14k Gold, Yellow Gold

2.20 Carat Sapphire Purple Oval Fashion Necklaces Berberyn Certified In 14K WG
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s Chain Necklaces

Materials

Sapphire, 14k Gold, White Gold

1.58 Carat Oval Sapphire Blue Fashion Necklaces In 14k White Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

Sapphire, 14k Gold, White Gold

3.11 Carat Trilliant Tanzanite Blue Fashion Necklaces In 14k Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

Tanzanite, 14k Gold, Yellow Gold

1.21 Carat Pink Sapphire Cushion &Fashion Necklaces Berberyn Certified In 14K RG
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s Chain Necklaces

Materials

Pink Sapphire, 14k Gold, Rose Gold

1.76 Carat Triangle Sapphire Blue Fashion Necklaces In 14k White Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

Sapphire, 14k Gold, White Gold

4.20 Carat Oval Tanzanite Blue Fashion Necklaces In 14k Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

Tanzanite, 14k Gold, Yellow Gold

1.42 Carat Sapphire Blue Oval Fashion Necklaces In 14K Rose Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s Chain Necklaces

Materials

Sapphire, 14k Gold, Rose Gold

0.90 Carat Emerald Pearshape Fashion Necklaces In 14K Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s Chain Necklaces

Materials

Emerald, 14k Gold, Yellow Gold

1.97 Carat Blue Oval Sapphire Fashion Necklaces In 14K White Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

Sapphire, 14k Gold, White Gold

2.02 Carat Green Tsavorite Oval Cut Fashion Necklaces In 14K Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

Tsavorite, 14k Gold, Yellow Gold

2.17 Carat Emerald Cut Pinkish Red Sapphire Fashion Necklaces In 14k Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

Emerald, Sapphire, 14k Gold, Yellow Gold

0.85 Carat Red Cushion Cut Fashion Necklaces In 14K Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

14k Gold, Yellow Gold

1.15 Carat Emerald Green Fashion Necklaces In 14k Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

Emerald, 14k Gold, Yellow Gold

1.97 Carat Emerald Green Fashion Necklaces In 14k Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

Emerald, 14k Gold, Yellow Gold

1.57 Carat Asscher Emerald Green Fashion Necklaces In 14k Yellow Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

Emerald, 14k Gold, Yellow Gold

2.19 Carat Blue Oval Sapphire Fashion Necklaces In 14K White Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

Sapphire, 14k Gold, White Gold

1.99 Carat Blue Oval Sapphire Fashion Necklaces In 14K White Gold
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry
Category

2010s American Contemporary Chain Necklaces

Materials

Sapphire, 14k Gold, White Gold

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Investment Diamonds For Sale on 1stDibs

Find an expansive variety of investment diamonds available on 1stDibs. All of the items for sale were constructed with extraordinary care, often using Gold, Platinum and 14k Gold. The designs in our inventory of investment diamonds bearing Modern hallmarks are very popular. Many examples in our inventory of these items are appealing no matter their origins, but Antinori Fine Jewels and Natkina produced popular versions that are worth a look. A selection of emerald cut, oval cut and pear cut can be found today on these pages. When shopping our range of investment diamonds, you’ll find that there are less available pieces for men today than there are for women.

How Much are Investment Diamonds?

Prices for investment diamonds can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $3,275 and can go as high as $1,205,400, while investment diamonds, on average, fetch $378,080.

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.