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Radiant Cut Lab Grown Diamonds

Combine the effortless elegance of an emerald cut with the fire of a round brilliant cut, and you get a radiant-cut diamond. As a perfect mix of these two popular diamond cuts, this diamond offers a brilliant sparkle and striking proportions. It delivers superior durability, while the unique shape creates the illusion of a larger appearance, whether as a square or rectangle.



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Shop loose diamonds that ship in 2 days or less. Delivery dates may change if you add your diamond to a setting.
Price
Many factors impact diamond price. With Ritani's Diamond Price Match Guarantee you can be confident you'll get the best price for a diamond. Tip: Tradition tells you to budget 2-3 months' salary for your ring. We say, just do you.
Carat
Carat is the measure of a diamond's weight and size. We offer an array of high-quality diamonds ranging from 0.18 to 25.00 carats- with 1.00 carat being the most popular.
Color
A diamond’s color grade actually measures how little color it reflects. To strike the best balance between cost and beauty, go for diamonds in the Near Colorless range: G, H, and I.
Clarity
Clarity indicates how many flaws are visible to the naked eye. Too many flaws can detract from a diamond's beauty.
Cut
Cut is the quality of a diamond’s proportions and symmetry. The better a diamond’s proportions and symmetry, the more sparkle it will produce. Cut is the most important of the 4 Cs.
Delivery Date
In a rush to get your diamond? Choose your ideal delivery date.
Polish
A well-polished diamond will have excellent light return.
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Fluorescence
Some diamonds glow blue or green when exposed to UV light. Since fluorescence is rarely visible, it has minimal impact on the appearance of your diamond. To save money, go for medium fluorescence.
Depth
Depth percentage correlates with a diamond's sparkle factor. It is measured by dividing the diamond height by its diameter. For maximum sparkle, the depth percentage of a round diamond should be between 54% and 66%.
Length/Width Ratio
The proportional relationship between your diamond’s length and width. A perfect round diamond would measure equally 1-to-1, so its LxW ratio would measure as 1.
Symmetry
Symmetry tells you how well a diamond’s facets align to create sparkle. Diamonds with perfect symmetry create the most sparkle and earn a grade of Excellent or Ideal.
Table
Table percentage tells you how big a diamond’s topmost facet (aka table) is in comparison to its diameter (aka girdle). When that ratio is in the right range, a diamond will sparkle more.
Culet
The culet is the point at the bottom of the diamond. If the point has a facet on it, it can stop light from reflecting and detract from the diamond's sparkle. Choose a diamond with no culet for optimum sparkle.
Certificate
All of Ritani’s natural diamonds are certified by either the GIA or AGSL, the industry’s two most respected grading labs.
Fluorescence
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Some diamonds glow blue or green when exposed to UV light. Since fluorescence is rarely visible, it has minimal impact on the appearance of your diamond. To save money, go for medium fluorescence.
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Depth
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Depth percentage correlates with a diamond's sparkle factor. It is measured by dividing the diamond height by its diameter. For maximum sparkle, the depth percentage of a round diamond should be between 54% and 66%.
Length/Width Ratio
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The proportional relationship between your diamond’s length and width. A perfect round diamond would measure equally 1-to-1, so its LxW ratio would measure as 1.
Symmetry
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Symmetry tells you how well a diamond’s facets align to create sparkle. Diamonds with perfect symmetry create the most sparkle and earn a grade of Excellent or Ideal.
Excellent
Very Good
Good
Fair
Table
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Table percentage tells you how big a diamond’s topmost facet (aka table) is in comparison to its diameter (aka girdle). When that ratio is in the right range, a diamond will sparkle more.
Culet
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The culet is the point at the bottom of the diamond. If the point has a facet on it, it can stop light from reflecting and detract from the diamond's sparkle. Choose a diamond with no culet for optimum sparkle.
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Very Small
Large
Certificate
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All of Ritani’s natural diamonds are certified by either the GIA or AGSL, the industry’s two most respected grading labs.
Lab Diamond Growth Process
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Lab diamonds are made using two processes, HPHT and CVD. Both mimic the natural process of earth diamonds. LEARN ABOUT LAB DIAMONDS

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Home / Lab Grown Diamonds / Radiant Cut Lab Grown Diamonds
Home / Lab Grown Diamonds / Radiant Cut Lab Grown Diamonds
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0.37 Carat Radiant Lab Diamond
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0.35 Carat Radiant Lab Diamond
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0.33 Carat Radiant Lab Diamond
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30% off Lab Grown Diamonds with code LD30
The Ritani Promise: Diamond Price Transparency, Price Match Guarantee, 30-Day Returns & Exchanges, See It In-Person
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4 interest-free payments of $39.75.
0.33 Carat Radiant Lab Diamond
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4 interest-free payments of $40.25.
0.39 Carat Radiant Lab Diamond
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0.31 Carat Radiant Lab Diamond
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GEMOLOGIST PICKS
These diamonds were hand picked by our in house gemologists who focus on balancing the 4 C's and best value pricing. Our gemologists are always here to help you find the diamond of your dreams. Chat Now
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5.06 Carat Radiant Lab Diamond
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Diamond Report

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4 interest-free payments of $490.25.
5.00 Carat Radiant Lab Diamond
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4 interest-free payments of $490.25.
3.72 Carat Radiant Lab Diamond
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Chat with a gemologist
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You can connect with a commission free gemologist instantly and receive a live diamond inspection on any diamond. You can also connect and shop together and compare up-to three diamonds at a time instantly. Try it out. Start your diamond concierge consultation today.
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30% off Engagement Rings with code LD30
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4 interest-free payments of $40.25.
0.31 Carat Radiant Lab Diamond
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4 interest-free payments of $40.25.
0.42 Carat Radiant Lab Diamond
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4 interest-free payments of $41.00.
0.34 Carat Radiant Lab Diamond
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4 interest-free payments of $41.25.
0.43 Carat Radiant Lab Diamond
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0.31 Carat Radiant Lab Diamond
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0.45 Carat Radiant Lab Diamond
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4 interest-free payments of $42.00.
0.35 Carat Radiant Lab Diamond
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4 interest-free payments of $42.00.
0.35 Carat Radiant Lab Diamond
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0.45 Carat Radiant Lab Diamond
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0.33 Carat Radiant Lab Diamond
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0.34 Carat Radiant Lab Diamond
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0.33 Carat Radiant Lab Diamond
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4 interest-free payments of $43.50.
0.38 Carat Radiant Lab Diamond
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0.38 Carat Radiant Lab Diamond
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0.37 Carat Radiant Lab Diamond
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4 interest-free payments of $43.75.
0.37 Carat Radiant Lab Diamond
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4 interest-free payments of $44.00.
0.35 Carat Radiant Lab Diamond
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0.43 Carat Radiant Lab Diamond
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Combine the effortless elegance of an emerald cut with the fire of a round brilliant cut, and you get a radiant-cut diamond. As a perfect mix of these two popular diamond cuts, this diamond offers a brilliant sparkle and striking proportions. It delivers superior durability, while the unique shape creates the illusion of a larger appearance, whether as a square or rectangle.



Experience Unparalleled Excellence With Ritani

Lab-grown diamonds offer the same hardness and resistance to cracks and scratches as natural diamonds. With Ritani's selection of premium-quality lab-grown stones, you get the best value for your money without compromising style and durability. Discover why customers love and trust Ritani for their diamond pieces:

  • Clear, upfront costs: We offer transparent pricing for every product, including loose diamonds and custom jewelry. Compare prices easily and pay for what you're quoted — no hidden charges.
  • Custom designs: We offer design customizations, providing you with the exact diamond piece you want. With the help of our local artisans, you can personalize your radiant-cut lab-grown diamond ring, earrings or pendant.
  • In-person previews: Schedule an in-person preview with our diamond experts to examine the diamonds you're eyeing and get the best recommendations for your needs or budget.

Design Your Dream Radiant Lab-Grown Diamond With Ritani

Ritani is the go-to jeweler for diamond lovers in New York. Elevate your style with stunning diamond pieces from our collection. Shop lab-grown diamonds online or contact us for inquiries.

Frequently Asked Questions

  • How much does a Radiant Cut Lab Grown Diamond cost?
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    A Radiant Cut Lab Grown Diamond can cost anywhere between $210 and $26,000 depending on the 4 cs. The median price is $2,300.

  • How are Ritani's lab-grown diamonds created?
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    ​Ritani's lab-grown diamonds are created using one of two methods: High Pressure High Temperature (HPHT) or Chemical Vapor Deposition (CVD). Both processes mimic the natural conditions under which diamonds form over millions of years, producing high-quality diamonds in a fraction of the time.


  • What makes the radiant cut special?
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    ​The radiant cut is known for its versatility, combining the brilliance and depth of round and emerald cuts, respectively. Its unique cut allows for maximum light reflection, resulting in a fiery, dazzling appearance. It's an excellent choice for those who appreciate both classic and contemporary styles.


  • Are radiant cut lab-grown diamonds from Ritani eco-friendly?
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    Yes, Ritani's lab-grown diamonds are an eco-friendly alternative to mined diamonds. The lab-growing process significantly reduces environmental impact, as it requires fewer resources and causes less ecological disruption compared to traditional diamond mining.

  • How do I care for my radiant cut lab-grown diamond?
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    Your radiant cut lab-grown diamond can be cared for just like any other diamond. Regular cleaning with a soft brush and mild soap will keep it sparkling. It's also recommended to have it inspected by a professional jeweler annually to ensure the setting remains secure.


  • Can I customize a radiant cut lab-grown diamond engagement ring at Ritani?
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    ​Absolutely! Ritani offers a wide range of customization options for engagement rings. You can choose your preferred metal, and setting style, and pair it with a radiant cut lab-grown diamond of your choice to create a ring that perfectly reflects your personal style.

  • How do I know the quality of my radiant cut lab-grown diamond?
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    All of Ritani's lab-grown diamonds, including radiant cuts, come with a grading report from reputable gemological laboratories such as the GIA (Gemological Institute of America) or IGI (International Gemological Institute). These reports detail the diamond's 4Cs (Cut, Color, Clarity, Carat) and other characteristics.


  • How do I know the quality of my radiant cut lab-grown diamond?
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    All of Ritani's lab-grown diamonds, including radiant cuts, come with a grading report from reputable gemological laboratories such as the GIA (Gemological Institute of America) or IGI (International Gemological Institute). These reports detail the diamond's 4Cs (Cut, Color, Clarity, Carat) and other characteristics.


  • Are there any differences in appearance between lab-grown and mined radiant cut diamonds?
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    To the naked eye, there are no discernible differences between a lab-grown and a mined diamond of similar quality. Both share the same physical, chemical, and optical properties.