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Lab Grown Diamonds

You've done your research. You know what you want. Now it's time to find the one. Browse our full collection of certified lab-grown diamonds. Shop by shape, carat, color, cut and clarity until you land on exactly the right stone. Whether you're building a custom engagement ring or adding a stunning piece of lab-grown jewelry to your collection, you're in the right place.
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0.21 Carat Good Cut Pear Lab-Grown Diamond - G Color, VVS2 Clarity - IGI Certified
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0.19 Carat Very Good Cut Emerald Lab-Grown Diamond - D Color, VS1 Clarity - IGI Certified
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0.22 Carat Good Cut Marquise Lab-Grown Diamond - D Color, SI1 Clarity - IGI Certified
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0.20 Carat Good Cut Emerald Lab-Grown Diamond - D Color, VS2 Clarity - IGI Certified
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0.20 Carat Good Cut Emerald Lab-Grown Diamond - D Color, VS2 Clarity - IGI Certified
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0.24 Carat Good Cut Pear Lab-Grown Diamond - G Color, VS2 Clarity - IGI Certified
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0.23 Carat Very Good Cut Oval Lab-Grown Diamond - D Color, SI1 Clarity - IGI Certified
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0.20 Carat Very Good Cut Emerald Lab-Grown Diamond - D Color, VS1 Clarity - IGI Certified
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0.19 Carat Very Good Cut Emerald Lab-Grown Diamond - D Color, VVS1 Clarity - IGI Certified
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0.21 Carat Good Cut Emerald Lab-Grown Diamond - F Color, VS1 Clarity - IGI Certified
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0.21 Carat Good Cut Emerald Lab-Grown Diamond - D Color, VS2 Clarity - IGI Certified
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0.21 Carat Very Good Cut Emerald Lab-Grown Diamond - D Color, VS1 Clarity - IGI Certified
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0.20 Carat Good Cut Emerald Lab-Grown Diamond - D Color, VVS2 Clarity - IGI Certified
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0.20 Carat Very Good Cut Emerald Lab-Grown Diamond - D Color, VVS2 Clarity - IGI Certified
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0.21 Carat Good Cut Emerald Lab-Grown Diamond - D Color, VS1 Clarity - IGI Certified
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0.21 Carat Good Cut Emerald Lab-Grown Diamond - D Color, VS1 Clarity - IGI Certified
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0.20 Carat Good Cut Emerald Lab-Grown Diamond - D Color, VVS2 Clarity - IGI Certified
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0.21 Carat Good Cut Emerald Lab-Grown Diamond - D Color, VS2 Clarity - IGI Certified
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0.21 Carat Very Good Cut Emerald Lab-Grown Diamond - D Color, VS2 Clarity - IGI Certified
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0.20 Carat Very Good Cut Pear Lab-Grown Diamond - E Color, VS1 Clarity - IGI Certified
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0.21 Carat Good Cut Marquise Lab-Grown Diamond - D Color, VS1 Clarity - IGI Certified
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0.20 Carat Very Good Cut Emerald Lab-Grown Diamond - D Color, VVS1 Clarity - IGI Certified
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0.20 Carat Good Cut Pear Lab-Grown Diamond - E Color, VVS2 Clarity - IGI Certified
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0.20 Carat Good Cut Pear Lab-Grown Diamond - D Color, VVS2 Clarity - IGI Certified
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You’ve viewed 24 of 1,019,516 products
You've done your research. You know what you want. Now it's time to find the one. Browse our full collection of certified lab-grown diamonds. Shop by shape, carat, color, cut and clarity until you land on exactly the right stone. Whether you're building a custom engagement ring or adding a stunning piece of lab-grown jewelry to your collection, you're in the right place.

Certified Lab-Grown Diamonds

Why Choose a Lab-Grown Diamond?

Lab-grown diamonds are real diamonds. They share the same physical, chemical, and optical properties as earth-mined stones. The only difference is where they come from. Instead of being mined from the earth, they're grown in a controlled environment that replicated the natural diamond-forming process. The result? A stone that's every bit as brilliant, durable, and beautiful, at a fraction of the cost. 

Here's what makes them worth a closer look:
  • Certified and graded: Every lab-grown diamond we carry is IGI certified, so you know exactly what you're getting.
  • Available in every cut: Round, cushion, oval, emerald, pear, princess, radiant, marquise, heart, and asscher
  • Ethically sourced by design: No mining means a significantly smaller environmental footprint, without sacrificing size, quality or sparkle.
  • Dramatically more affordable: Lab-grown diamond cost is typically 50-80% les than a comparable natural diamond, which means you can go bigger, go better, or simply save.

Find Your Diamond, Your Way

We've made it easy to narrow things down fast. Use the filters at the top of the page to browse by:​
  • Carat weight: From delicate to show-stopping–we even provide a sliding size scale
  • Shape: Round cuts are our bestseller, but every shape has its moment
  • Color and clarity: Dial in exactly the specs you want
  • Cut grade: Because the cut is what makes a diamond truly come alive
Not sure where to start? Our in-house gemologists are available for a live, commission-free consultation. They can walk you through your options, compare stones side by side, and help you find the best value for your budget.

The Ritani Difference

​​Choosing a diamond is one of the most meaningful purchases you'll ever make, and at Ritani, we believe the experience should feel as exceptional as the stone itself. That starts with something the industry doesn't always offer: complete transparency. We show you the true cost behind every diamond, the metal, the labor, the setting, with no hidden markups and no mystery pricing, because you should know what you're investing in.

Every piece we create is made to order, freshly handcrafted at our White Plains, NY facility by skilled artisans and overseen by our in-house gemologists from start to finish. Nothing sits on a shelf. Nothing is rushed off to a warehouse. Your jewelry is made for you, and only you.

Because we control the entire process under one roof, we're able to move faster than anyone else in the industry, without cutting corners on quality. And with our 30-day return and exchange policy, you can shop with the confidence that we stand behind every piece we make.

That is what it means to buy from Ritani.

Frequently Asked Questions