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Round Cut Diamonds

Round is our most popular cut. For almost 100 years, diamond cutters have been using advanced theories of light behavior and precise mathematical calculations to optimize the fire and brilliance in a round diamond. Round cuts also have the widest variety of setting styles so you can customize to your heart's content.

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Round Cut Diamonds

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FAQs about Round Cut Diamonds

Round cut diamonds take the most raw material to create when they are cut from a rough diamond. While carat weights under .75 are only slightly more expensive than similar fancy cut diamonds, as carat weight increases (especially at the 1 ct. mark), the cost increases more significantly. Learn more in our guide to how diamond shape affects price.

Round cut diamonds are the only shape with cut standards established by the Gemological Institute of America (GIA). All Blue Nile diamonds are GIA certified. Learn more about GIA diamond grading reports.

Round Cut is by far the most popular diamond shape on Blue Nile. Over 70% of our customers choose a round cut diamond.

Round cut hides inclusions well, so you may be able to save with a lower clarity grade.

Explore More Round Cut Jewelry

Round Cut Engagement Rings
Round Cut Diamond Stud Earrings
Round Cut Diamond Pendants
Build Your Own Round Cut Diamond Earrings
Build Your Own Round Cut Diamond Pendant