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Round Cut Diamonds

Explore Ritani's Round-Cut Lab-Grown Diamonds, combining elegance with eco-friendliness. Each diamond boasts transparency and exceptional value, perfect for creating sophisticated, sustainable engagement rings.


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Best Value
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Best Value
Shop loose diamonds in our inventory that we have identified as being Best Value. Best price and balance of the 4C's on the market.
Ritani Reserve Ritani Reserve
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Ritani Reserve
Ritani Reserve Diamonds are an exclusive selection of diamonds that have the best cut which offers maximum sparkle. They reflect the most light, maximum brilliance, fire, and scintillation.
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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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Faint
Medium
Strong
Very Strong
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
Tool Tip Icon
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
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.
None
Very Small
Small
Medium
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.
Best Value
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Best Value
Shop loose diamonds in our inventory that we have identified as being Best Value. Best price and balance of the 4C's on the market.
Ritani Reserve Ritani Reserve
Tool Tip Icon
Ritani Reserve
Ritani Reserve Diamonds are an exclusive selection of diamonds that have the best cut which offers maximum sparkle. They reflect the most light, maximum brilliance, fire, and scintillation.
0.18 Carat Round Diamond
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$209.00
Very Good | E | SI1
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0.20 Carat Round Diamond
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$216.00
Ideal | F | SI1
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0.18 Carat Round Diamond
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$220.00
Very Good | G | SI2
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0.20 Carat Round Diamond
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$221.00
Ideal | I | VVS1
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0.20 Carat Round Diamond
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$225.00
Very Good | E | SI1
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0.18 Carat Round Diamond
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$227.00
Very Good | I | VVS1
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0.20 Carat Round Diamond
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$227.00
Very Good | F | SI1
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2% off Natural Diamonds with code SAVE2
RECOMMENDED DIAMONDS
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We’re here to give you all the tools you need to help you find the best diamond for your budget. Our goal is to provide the most affordable diamonds with transparent pricing. We’ve made shopping even easier for you by labeling our lowest priced diamonds with the Best Value badge.
Best Value
1.05 Carat Round Diamond
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$7,246.00
Ideal | G | IF
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Best Value
1.06 Carat Round Diamond
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$7,315.00
Ideal | G | IF
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1.36 Carat Round Diamond
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$5,990.00
Ideal | J | IF
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Change your filters to view even more diamond recommendations, or chat with a gemologist to find the right diamond for you.
0.19 Carat Round Diamond
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$227.00
Ideal | I | VVS2
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0.18 Carat Round Diamond
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$231.00
Ideal | F | SI2
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0.18 Carat Round Diamond
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$232.00
Ideal | G | VVS2
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0.20 Carat Round Diamond
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$234.00
Very Good | J | VVS1
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Best Value
Best Value
0.20 Carat Round Diamond
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$234.00
Ideal | I | VVS1
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0.21 Carat Round Diamond
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$234.00
Ideal | J | VS1
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0.20 Carat Round Diamond
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$234.00
Ideal | H | VVS2
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0.20 Carat Round Diamond
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$236.00
Ideal | H | SI2
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0.18 Carat Round Diamond
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$236.00
Ideal | H | VVS2
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0.20 Carat Round Diamond
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$238.00
Ideal | I | VVS1
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Best Value
Best Value
0.23 Carat Round Diamond
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$238.00
Very Good | L | SI1
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Get the Best Deal - Look for Best Value diamonds while you shop. Best Value - Learn more
0.18 Carat Round Diamond
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$238.00
Very Good | F | SI2
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0.20 Carat Round Diamond
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$239.00
Ideal | H | VS2
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0.20 Carat Round Diamond
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$239.00
Ideal | I | VS1
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0.18 Carat Round Diamond
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$240.00
Ideal | G | SI2
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0.19 Carat Round Diamond
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$240.00
Very Good | E | VS1
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0.20 Carat Round Diamond
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$240.00
Very Good | I | VS1
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Round Cut Diamonds by Ritani

Shape

Commonly referred to as brilliant-cut diamonds, round-cut diamonds are treasured for their intense sparkle, making them the most popular diamond shape. The round cut shape reflects the maximum level of brilliance, with 58 facets—or 57 if there is no culet. Choose a round-cut diamond with an ideal-cut grade for the ultimate degree of sparkle. 

Round-cut diamonds are perfect for rings, pendants, bracelets, and earrings. To make a round-cut diamond solitaire ring appear larger, a halo setting is recommended. A halo setting features a band of tiny accent diamonds that encircle and emphasize your center diamond with added sparkle. Or, let your round-cut diamond stand out with an elegant solitaire setting. 

All Ritani earth-grown diamonds are certified by the AGS or GIA—the world’s most respected independent grading labs. If you need help selecting a round-cut diamond, contact us at 1-888-9RITANI or [email protected].

Earth Grown Diamonds

Earth grown diamonds are mined from deep under the earth's surface where they have lain dormant for millions of years. When you hold an earth grown diamond, reflect on the immense journey this diamond has taken and the history it has endured.

A diamond starts out in the lowly form of graphite, such as you might find in the tip of your pencil. Over the course of hundreds of millions of years, the immense pressure and temperature produced deep inside the earth rearrange the carbon atoms into a crystal structure.

Then miners dig deep tunnels under the earth and collect the rough diamonds. The rough diamond looks nothing like the sparkly diamond you are holding. It has an irregular shape, is very dirty and looks dull. The diamond is then cleaned, cut into it's desired shape, and finally polished into the beautiful diamond you are now holding!

All Ritani earth grown diamonds are certified by either the AGS or GIA – the two most respected independent grading labs in the world.

If you need help selecting your Round Cut Diamonds, reach out to us at 1-888-9RITANI or chat now.

Frequently Asked Questions

  • How much does a Round Cut Diamond cost?
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    A Round Cut Diamond can cost anywhere between $180 and $420,000 depending on the 4 cs. The median price is $1,300.