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  2. Step 2: Choose Your Setting
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1 Carat Round Cut Diamonds

Explore our collection of stunning 1 Carat Round Diamonds, ideal for engagement rings and diamond pendants. Our transparent diamond pricing makes it easy to compare diamonds and shop with confidence. Be sure to look for the Best Value badge to find diamonds that offer the perfect balance of beauty, quality and price.

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.
Min
Max
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.
Min
Max
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.
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%.
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Max
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.
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Max
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.
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Max
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.
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1.01 Carat Ideal Cut Round Natural Diamond - L Color, SI2 Clarity - GIA Certified
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1.01 Carat Good Cut Round Natural Diamond - L Color, SI1 Clarity - GIA Certified
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1.01 Carat Good Cut Round Natural Diamond - L Color, SI1 Clarity - GIA Certified
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1.03 Carat Ideal Cut Round Natural Diamond - L Color, SI2 Clarity - GIA Certified
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1.01 Carat Ideal Cut Round Natural Diamond - L Color, SI2 Clarity - GIA Certified
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1.03 Carat Ideal Cut Round Natural Diamond - L Color, SI2 Clarity - GIA Certified
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1.00 Carat Ideal Cut Round Natural Diamond - L Color, SI2 Clarity - GIA Certified
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1.01 Carat Ideal Cut Round Natural Diamond - L Color, SI2 Clarity - GIA Certified
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Natural

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1.00 Carat Ideal Cut Round Natural Diamond - L Color, SI2 Clarity - GIA Certified
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1.00 Carat Good Cut Round Natural Diamond - L Color, SI2 Clarity - GIA Certified
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1.02 Carat Ideal Cut Round Natural Diamond - L Color, SI2 Clarity - GIA Certified
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1.01 Carat Very Good Cut Round Natural Diamond - L Color, SI1 Clarity - GIA Certified
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1.00 Carat Very Good Cut Round Natural Diamond - L Color, SI1 Clarity - GIA Certified
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1.01 Carat Very Good Cut Round Natural Diamond - J Color, SI2 Clarity - GIA Certified
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1.01 Carat Ideal Cut Round Natural Diamond - L Color, SI2 Clarity - GIA Certified
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Natural

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1.00 Carat Very Good Cut Round Natural Diamond - L Color, SI2 Clarity - GIA Certified
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1.00 Carat Very Good Cut Round Natural Diamond - L Color, SI2 Clarity - GIA Certified
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1.01 Carat Good Cut Round Natural Diamond - L Color, SI1 Clarity - GIA Certified
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1.00 Carat Ideal Cut Round Natural Diamond - L Color, SI2 Clarity - GIA Certified
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BEST VALUE

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1.00 Carat Very Good Cut Round Natural Diamond - J Color, SI2 Clarity - GIA Certified
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1.10 Carat Ideal Cut Round Natural Diamond - L Color, SI2 Clarity - GIA Certified
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1.00 Carat Ideal Cut Round Natural Diamond - L Color, SI2 Clarity - GIA Certified
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1.00 Carat Ideal Cut Round Natural Diamond - L Color, SI2 Clarity - GIA Certified
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1.01 Carat Ideal Cut Round Natural Diamond - L Color, SI2 Clarity - GIA Certified
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You’ve viewed 24 of 11,738 products

Explore our collection of stunning 1 Carat Round Diamonds, ideal for engagement rings and diamond pendants. Our transparent diamond pricing makes it easy to compare diamonds and shop with confidence. Be sure to look for the Best Value badge to find diamonds that offer the perfect balance of beauty, quality and price.

1 Carat Round Cut Diamonds

1 carat round diamonds are a classic choice for engagement rings, but also popular for diamond pendants and diamond stud earrings, as they provide a great balance between size and price. To make your round cut diamond appear even larger, choose a halo setting.

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.

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 1 Carat Round Cut Diamonds, reach out to us at 1-888-9RITANI or chat now.​

Common Questions

Frequently Asked Questions

A 1 Carat Round Cut Diamond can cost anywhere between $1,000 and $25,000 depending on the 4 cs. The median price is $5,100.

A 1 carat diamond weighs 0.2 grams or 200 milligrams.

1 Carat Round Cut Diamonds do not all have the same dimensions, since carat is a measure of weight, not size.

Here you can see the range of dimensions for a 1 Carat Round Cut Diamond


Low
High
Median
Length (mm)
6
6.8
6.4
Width (mm)
5.4
6.8
6.4
Depth (mm)
3.4
4.2
4
Length to width ratio (mm)
1
1.2
1