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Our incredible selection of Certified Diamonds

For over ten years, the knowledgeable consultants at Union Diamond have striven to find our clients the very best in Ideal Cut Diamonds. From the Princess cut to the Cushion cut, and everything in between, we have the diamond that is perfect for you. Whether you are a diamond expert looking to upgrade your Emerald cut engagement ring to an Asscher cut, or a novice buying your very first set of Round Brilliant Diamond Stud Earrings, we will be with you ever step of the way as you choose your AGS, EGL, or GIA Certified Loose Diamond. And don’t worry about blowing your budget. As an online retailer, we are able to keep our margins far lower than our competitors so that we can pass those savings on to you. That’s how we’re able to have the best and cheapest diamonds around! So feel free to add the matching Diamond Pendant to your wife’s Diamond Solitaire without the guilt. Or maybe you want to design a custom piece that’s just as unique as she is. Look no further than our amazing custom department. Using the finest quality metals including Platinum, Palladium and White Gold, our designers use a full range of design techniques including CAD drawings and wax models to make sure that your piece is perfect. For our full range of fine jewelry, loose diamonds, as well as our custom gallery, check out our website at and see why shopping at Union Diamond means that you can "Just Expect More"!

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Diamonds Search

Since 2001, the knowledgeable consultants at Union Diamond have striven to find our clients the very best in quality loose diamonds. From the Princess cut to the Cushion cut, and everything in between, we have the diamond that is perfect for you. Whether you are a diamond expert looking to upgrade your Emerald cut engagement ring to an Asscher cut, or a novice buying your very first set of Round Brilliant Diamond Stud Earrings, we will be with you ever step of the way as you choose your AGS, EGL, or GIA Certified Loose Diamond. And don’t worry about blowing your budget. As an online retailer, we are able to keep our margins far lower than our competitors so that we can pass those savings on to you. That’s how we’re able to have the best and cheapest diamonds around!

So take a moment and peruse thousands of beautiful loose cut diamonds using our state-of-the-art diamond finder tool.

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Ideal Cut Diamond Search

Based on scientific formulas, a well-cut diamond will internally reflect light from one mirror-like facet to another and disperse and reflect it through the top of the stone. This results in a dazzling display of brilliance and fire, unlocking the true beauty of the stone which would be lost in a diamond with less cut precision. Union Diamond Ideal Cut stones are cut only from the finest quality rough diamonds. Other companies try to get the largest diamonds possible from each piece of rough with no regard for the beauty of the finished stone, but Union Diamond Ideal Cut stones are carefully selected for their perfect proportions which allow our diamonds to reflect the maximum amount of light and brilliance possible.

So take a moment and peruse thousands of beautiful ideal cut diamonds using our state-of-the-art, interactive diamond finder tool.

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Design an Engagement Ring

When it comes to engagement rings, every bride is different. Here at Union Diamond we celebrate those differences by offering a plethora of styles and designs, in a variety of precious metals including Palladium, Platinum, White and Yellow Gold. From the classic six prong Tiffany, to the vintage inspired with delicate milgrain detailing, to the modern, clean lines of channel set diamond accents, our engagement settings are sure to please. Just don’t forget that Certified Ideal Cut Diamond to complete the look! Check out our Diamond Finder tool where you can search and sort through thousands of stunning stones to find your perfect diamond. Feeling a bit overwhelmed? Don’t worry. Our knowledgeable consultants are here to help and ensure that her ring and diamond are perfect, as well as giving a bit of encouragement along the way!

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Design a Diamond Pendant

Whether you’re running a few quick errands, or attending a Black Tie event, nothing completes an outfit like a Diamond Pendant. Choose from our thousands of beautiful certified ideal cut diamonds in our vast online inventory including round brilliant, princess cut, oval, cushion, marquise, heart shapes and more with our innovative diamond finder tool. Once you’ve selected your perfect diamond we’ll set it in the style and metal of your choice including platinum, white and yellow gold.

Whether it’s a gift to celebrate your fiftieth wedding anniversary, or gift to yourself for landing that big account at work, nothing commemorates a special occasion like a Diamond Pendant from Union Diamond!

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Diamond Stud Earrings

Perfect for every outfit and occasion, Diamond Stud Earrings are a must- have for every jewelry wardrobe. Here at Union Diamond we have all styles from the classic four prong basket, to the fresh and clean three prong martini, and for those with a bit more of a modern flair be sure to try our beautiful Bezel Set Studs. Choose from seven perfectly preset sizes and we'll be happy to set them in the style and metal of your choice including platinum, white and yellow gold. Whether they are a gift for a loved one, or even a gift for yourself, let us show you that with the Diamond Stud Earrings at Union Diamond, you can "Just Expect More"!

Want a little more customization? Visit our Certified Studs page and select your own certified ideal cut diamond and setting for a piece that is uniquely yours!

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Certified Diamond Stud Earrings

Perfect for every outfit and occasion, Diamond Stud Earrings are a must- have for every jewelry wardrobe. Here at Union Diamond we have all styles from the classic four prong basket, to the fresh and clean three prong martini, and for those with a bit more of a modern flair be sure to try our beautiful Bezel Set Studs. Choose from thousands of beautiful certified ideal cut round or princess cut diamonds in our vast online inventory and we'll be happy to set them in the style and metal of your choice including platinum, palladium, white and yellow gold.

Whether they are a gift for a loved one, or even a gift for yourself, let us show you that with the Diamond Stud Earrings at Union Diamond, you can "Just Expect More"!

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Solitaire Diamond Pendants

Whether you're running a few quick errands, or attending a Black Tie event, nothing completes an outfit like a Diamond Pendant. Choose from one of our beautiful preset pieces featuring Round Brilliant Diamonds and Princess Cuts set in Prong or Bezel Settings in the metal of your choice including platinum, palladium, white and yellow gold. Whether it's a gift to celebrate your fiftieth wedding anniversary, or a gift to yourself for landing that big account at work, nothing commemorates a special occasion like a Diamond Pendant from Union Diamond!

Want a little more customization? Visit our Design Your Own Pendant page and select your own certified ideal cut diamond and setting for a piece that is uniquely yours!

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Diamond Education

Whether this is your first diamond buying experience or your twenty first, everyone has questions and concerns about how to find the perfect diamond. Lucky for you, you’re in the right spot. Visit our Diamond Education page to find everything you need to know about the 4C’s including Cut, Color, Carat, and Clarity, Diamond Grading and more! Still have questions? Our knowledgeable GIA trained diamond experts will be more than happy to help.

And remember, the first rule of buying a diamond is to have fun, so dive right in and enjoy the ride!

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At Union Diamond, we have provided exceptional quality wholesale diamonds for our customers in our Atlanta jewelry store and through our online store. Whether this is your very first diamond purchase or you have extensive knowledge of loose diamonds, you will find quality diamonds and discount jewelry at prices without breaking your budget.

Loose Diamonds and Diamond Jewelry

We offer an enormous selection of quality AGS, EGL, and GIA Certified loose diamonds for sale. Our customers enjoy competitive prices for round, emerald cut, Asscher cut, oval, radiant, heart, pear, princess, cushion, marquise, and trillion diamonds. Everything you need to make an informed decision can be found in our detailed grading reports, resources, and experienced diamond consultants to answer your questions.

Our loose diamonds can be used to create your own jewelry design on our website from the comfort of your own home. Start by selecting the setting and then choose your diamonds to create your own jewelry. We offer a beautiful selection of settings for engagement and wedding rings, diamond earrings & bracelets, necklaces, and pendants. Our diamond finder tool makes it easy to find diamonds in the perfect size and shape to fit your chosen setting.

Our Designers Create Custom Diamond Jewelry

If you want a one of a kind gift or engagement ring, Union Diamond offers custom design services. The talented designers in our custom department create unique pendants, engagement rings, wedding rings, and much more. Whether you already have an idea for a design or have no idea where to start, our designers will work with you. We use the best technology and time tested design methods, including CAD drawings and wax models to ensure the design is flawless prior to making the finished product.

Whether you choose one of our exquisite settings or let our designers create a custom ring or pendant to your specifications, you can rest assured that our jewelry is crafted with the highest quality materials, including the diamonds and our yellow gold, white gold, rose gold, platinum, and palladium settings.

Union Diamond

2410 Paces Ferry Road SE Atlanta, GA 30339
Phone: 1.800.319.9155, +1.770.319.9155
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