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Round Cut Lab Grown Diamonds
Superior sparkle in a timeless design — that's what you get from a round-cut diamond. Also popularly known as the brilliant cut, a round-cut lab-grown diamond features exceptional light dispersion, allowing it to produce mesmerizing sparkle. Lab-grown diamonds offer an affordable and sustainable choice, giving you the best of both worlds.
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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Girdle Thickness
The girdle is the outer edge of the diamond, where the crown top meets the pavilion bottom.
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.
Price Per Carat
Crown Angle
Pavilion Angle
Width (mm)
Height (mm)
Length (mm)
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.
Girdle Thickness
The girdle is the outer edge of the diamond, where the crown top meets the pavilion bottom.
Thin
Medium
Sli. Thick
Thick
Very Thick
Ext. Thick
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.
None
Faint
Price Per Carat
Crown Angle
Pavilion Angle
Width (mm)
Height (mm)
Length (mm)
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.
Excellent
Very Good
Good
Fair
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.
None
Very Small
Medium
Slightly Large
Large
Certificate
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
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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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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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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4 interest-free payments of $33.50.
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Superior sparkle in a timeless design — that's what you get from a round-cut diamond. Also popularly known as the brilliant cut, a round-cut lab-grown diamond features exceptional light dispersion, allowing it to produce mesmerizing sparkle. Lab-grown diamonds offer an affordable and sustainable choice, giving you the best of both worlds.
Experience the Ritani Difference
When it comes to round-cut lab-grown diamonds, Ritani is a cut above the rest. Offering unmatched brilliance and ageless grace, our round-cut jewels are sought-after pieces. Choose Ritani and see why customers love our diamond classics.
- Transparent pricing: We keep our premium-quality jewelry accessible and our prices transparent. At Ritani, what you see is what you pay for. We provide real-time pricing data to help you compare options freely.
- Custom options: We offer endless possibilities with custom designs. Our expert jewelers masterfully create a round-cut diamond ring that suits your style, personality and budget.
- Skillfully handcrafted: Each ring is crafted by experts in New York, undergoing a meticulous process, from design to polishing and plating. Get the best value for your money with a timeless investment.
Shop Your Lab-Grown Round Diamond Ring Now
Select a ring that never goes out of style — a custom-made round lab-grown diamond ring. Request an in-person preview to see and inspect your ring with one of our experts before you purchase it. Shop lab-grown diamond rings at Ritani to see our collection.
Shop by Carat Weight
- 0.25 Carat Round Cut Lab Grown Diamond
- 0.5 Carat Round Cut Lab Grown Diamond
- 0.75 Carat Round Cut Lab Grown Diamond
- 1 Carat Round Cut Lab Grown Diamond
- 1.25 Carat Round Cut Lab Grown Diamond
- 1.5 Carat Round Cut Lab Grown Diamond
- 1.75 Carat Round Cut Lab Grown Diamond
- 2 Carat Round Cut Lab Grown Diamond
- 2.5 Carat Round Cut Lab Grown Diamond
- 3 Carat Round Cut Lab Grown Diamond
- 3.5 Carat Round Cut Lab Grown Diamond
- 4 Carat Round Cut Lab Grown Diamond
- 5 Carat Round Cut Lab Grown Diamond
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Frequently Asked Questions
How much does a Round Cut Lab Grown Diamond cost?
A Round Cut Lab Grown Diamond can cost anywhere between $83 and $47,000 depending on the 4 cs. The median price is $1,400.
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