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Diamonds, Engagement Rings and Fine Jewelry

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Sized from  to  carats.
Carats are a unit of weight, not size, for diamonds.
One carat is equal to 200 milligrams, or 0.2 grams.
Learn About Diamonds
Learn About Diamonds
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Why Blue Nile?
Largest Online Retailer of Certified Diamonds
Forbes Favorite Online Jeweler Since 2000
Award-Winning Customer Service
888-565-7641
Why Blue Nile?

The Perfect Engagement Ring
The Perfect Engagement Ring
Engagement Ring Guide
Find Your Ring Size
After You Place Your Order
Recently Purchased Engagement Rings

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