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Round Cut Lab Grown Diamonds

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.
Yellow Diamonds (Choose Below)
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.
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Polish
A well-polished diamond will have excellent light return.
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.
32,635  products
0.32 Carat Round Lab Diamond
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$89.00
Ideal | J | VS1
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0.31 Carat Round Lab Diamond
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$90.00
Ideal | J | VVS2
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0.33 Carat Round Lab Diamond
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$98.00
Ideal | J | VVS2
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0.30 Carat Round Lab Diamond
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$99.00
Ideal | I | VS1
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0.30 Carat Round Lab Diamond
$99.00
Ideal | I | VS1
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0.30 Carat Round Lab Diamond
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$101.00
Ideal | G | SI1
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0.31 Carat Round Lab Diamond
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$101.00
Ideal | H | VS2
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0.32 Carat Round Lab Diamond
$102.00
Ideal | I | VS2
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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
2.13 Carat Round Lab Diamond
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$2,162.00
Ideal | E | SI1
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Best Value
0.86 Carat Round Lab Diamond
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$479.00
Ideal | D | SI1
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0.84 Carat Round Lab Diamond
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$599.00
Ideal | I | VVS1
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WANT TO VIEW MORE RECOMMENDATIONS?
Change your filters to view even more diamond recommendations, or chat with a gemologist to find the right diamond for you.
0.31 Carat Round Lab Diamond
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$105.00
Ideal | G | SI1
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0.31 Carat Round Lab Diamond
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$105.00
Ideal | G | SI1
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0.30 Carat Round Lab Diamond
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$105.00
Ideal | G | VS2
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0.32 Carat Round Lab Diamond
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$108.00
Ideal | G | SI1
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0.32 Carat Round Lab Diamond
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$108.00
Ideal | G | SI1
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0.39 Carat Round Lab Diamond
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$109.00
Ideal | J | VS1
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0.33 Carat Round Lab Diamond
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$111.00
Ideal | G | SI1
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0.33 Carat Round Lab Diamond
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$111.00
Ideal | G | SI1
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0.33 Carat Round Lab Diamond
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$111.00
Ideal | G | SI1
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0.31 Carat Round Lab Diamond
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$113.00
Ideal | H | VS1
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0.30 Carat Round Lab Diamond
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$114.00
Very Good | G | VS1
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0.34 Carat Round Lab Diamond
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$115.00
Ideal | G | SI1
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0.34 Carat Round Lab Diamond
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$115.00
Ideal | G | SI1
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0.34 Carat Round Lab Diamond
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$115.00
Ideal | G | SI1
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0.33 Carat Round Lab Diamond
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$115.00
Ideal | G | VS2
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0.30 Carat Round Lab Diamond
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$118.00
Ideal | F | VS2
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Round Cut Lab Grown Diamonds

Shape

Round cut diamonds (also called brilliant-cut diamonds) are revered for their classic shape and incredible sparkle. Cut with 58 facets — or 57, if there is no culet — the round shape was designed to produce as much sparkle as possible. As sparkle is what many people are looking for when they buy a diamond, round cuts are immensely popular.

60% of the diamonds in our inventory are round-shaped, making it easy for you to find the right one for your needs. Not only are round cut diamonds the most sparkly, but they are also the most popular diamond shape. However, because they are the most sparkly and the most popular, this makes them the most expensive diamond shape.

Round cut diamonds are perfect for custom jewelry, such as earrings and pendants. To make your round cut diamond appear even larger, choose a halo setting. Or let your round cut diamond stand out on its own in a solitaire setting.

Lab Grown Diamonds

Lab grown diamonds are real diamonds that are created in the lab instead of deep inside the earth's crust. They are physically, chemically, and visually identical to earth grown diamonds and are indistinguishable even by a trained gemologist.

The only difference between lab grown diamonds and earth grown diamonds is how they were created. Earth grown diamonds are created under high pressure and temperature deep under the earth's surface, while lab grown diamonds are created under high pressure and temperature(HPHT) in a lab

Lab grown diamonds are typically between 30 and 50 percent cheaper than earth grown diamonds! Therefore they have become a very popular choice for engagement ring, since you can get a bigger size diamond for your budget.

All Ritani lab grown diamonds are certified. Most of our lab grown diamonds are certified by IGI, the most respected independent lab diamond grading labaratory.

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

Frequently Asked Questions

  • How much does a Round Cut Lab Grown Diamond cost?
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    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.