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Quick Ship Diamonds
Quick Ship Diamonds
Shop loose diamonds that ship in 2 days or less. Delivery dates may change if you add your diamond to a setting.Best Value
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
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.Shape
Shape influences the personality and price of a diamond.
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.
Type
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Polish
A well-polished diamond will have excellent light return.
Girdle Thickness
The girdle is the outer edge of the diamond, where the crown top meets the pavilion bottom.
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.
Price Per Carat
Crown Angle
Pavilion Angle
Width (mm)
Height (mm)
Length (mm)
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.
Polish
A well-polished diamond will have excellent light return.
Excellent
Very Good
Good
Girdle Thickness
The girdle is the outer edge of the diamond, where the crown top meets the pavilion bottom.
Ext. Thin
Very Thin
Thin
Medium
Sli. Thick
Thick
Very Thick
Ext. Thick
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.
None
Faint
Medium
Strong
Very Strong
Price Per Carat
Crown Angle
Pavilion Angle
Width (mm)
Height (mm)
Length (mm)
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.
Excellent
Very Good
Good
Fair
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.
None
Very Small
Medium
Slightly Large
Large
Certificate
All of Ritani’s natural diamonds are certified by either the GIA or AGSL, the industry’s two most respected grading labs.
Lab Diamond Growth Process
Lab diamonds are made using two processes, HPHT and CVD. Both mimic the natural process of earth diamonds. LEARN ABOUT LAB DIAMONDS
Quick Ship Diamonds
Quick Ship Diamonds
Shop loose diamonds that ship in 2 days or less. Delivery dates may change if you add your diamond to a setting.Best Value
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
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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GEMOLOGIST PICKS
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These diamonds were hand picked by our in house gemologists who focus on balancing the 4 C's and best value pricing. Our gemologists are always here to help you find the diamond of your dreams. Chat Now
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Get an in depth analysis of this diamond.
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Shop All Certified Natural and Lab-Grown Ritani Diamonds
We get it—shopping for a diamond can feel intimidating or even stressful. Our thoughtfully crafted diamond finder makes choosing the right natural or lab-grown stone for your engagement ring or pendant easy. Use our filters to sort by diamond cut, clarity, carat weight, and color, or start your search by selecting your favorite diamond shape. We offer a variety of the most popular and timeless diamond shapes, from round to oval to emerald-shaped stones. If you’re in a hurry, you can even sort and find diamonds by delivery date. You deserve the best quality. We only offer stones certified by reputable diamond grading agencies like the GIA and IGI, GCAL. Select each stone to get a gemologist diamond rating based on its quality. Our gemologists rate each diamond on important factors like visual size (how large your diamond will actually appear), if the stone is eye-clean (meaning you won’t see any flaws with the naked eye), and how sparkly the diamond is. And make sure you look for diamonds with the Best Value badge! When you see a diamond with a Best Value badge, it means we analyzed its price compared to the same (or similar) diamonds on the market, and our diamond has the lowest retail price. Once you’ve found the one, add it to a pendant or ring setting. To purchase a loose diamond, simply select “Add to Cart.” We’re here for you every step of the way. If you still need some extra diamond guidance, schedule an online appointment with a virtual gemologist to get an in-depth analysis or second opinion of your stone. Don’t worry–our gemologists don’t receive a commission, so there’s never any pressure to make a purchase. If you’re still on the fence about your diamond, you can view it in person for free if your order is $1,500 or more. Learn more about free in-person preview to view a diamond with zero commitment at a location near you.
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