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The Biggest Diamonds

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Quick Ship Diamonds
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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
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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
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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.
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.
Type
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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.
Polish
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A well-polished diamond will have excellent light return.
Excellent
Very Good
Good
Fluorescence
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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
Depth
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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
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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
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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
Table
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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
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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
Large
Certificate
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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
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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
Tool Tip Icon
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
Tool Tip Icon
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
Tool Tip Icon
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.
10.10 Carat Emerald Lab Diamond
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Lab
BEST VALUE
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$4,228.00
10.1Carat
GColor
SI1Clarity
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10.02 Carat Emerald Lab Diamond
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Lab
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$4,840.00
10.02Carat
GColor
VS2Clarity
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10.60 Carat Emerald Lab Diamond
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$5,120.00
10.6Carat
GColor
VS2Clarity
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10.22 Carat Emerald Lab Diamond
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$7,872.00
10.22Carat
HColor
SI1Clarity
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10.09 Carat Oval Lab Diamond
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$8,173.00
10.09Carat
GColor
VS2Clarity
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10.72 Carat Oval Lab Diamond
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$8,683.00
10.72Carat
GColor
VS2Clarity
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10.82 Carat Oval Lab Diamond
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$8,764.00
10.82Carat
GColor
VS2Clarity
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11.13 Carat Emerald Lab Diamond
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$8,832.00
11.13Carat
GColor
VS2Clarity
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10.03 Carat Emerald Lab Diamond
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$9,629.00
10.03Carat
IColor
VS2Clarity
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13.04 Carat Oval Lab Diamond
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$10,993.00
13.04Carat
GColor
VS2Clarity
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20.55 Carat Emerald Lab Diamond
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$34,203.00
20.55Carat
HColor
VS2Clarity
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10.62 Carat Emerald Lab Diamond
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$302,669.00
10.62Carat
HColor
SI1Clarity
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14.01 Carat Emerald Lab Diamond
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$471,153.00
14.01Carat
GColor
SI1Clarity
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10.15 Carat Oval Lab Diamond
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$7,869.00
10.15Carat
HColor
VS1Clarity
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10.27 Carat Emerald Lab Diamond
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$8,165.00
10.27Carat
HColor
VS1Clarity
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10.03 Carat Emerald Lab Diamond
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$9,004.00
10.03Carat
FColor
VS2Clarity
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10.22 Carat Emerald Lab Diamond
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$9,167.00
10.22Carat
GColor
VS1Clarity
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10.85 Carat Emerald Lab Diamond
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$9,732.00
10.85Carat
GColor
VS1Clarity
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11.05 Carat Oval Lab Diamond
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$9,828.00
11.05Carat
HColor
VS1Clarity
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10.08 Carat Emerald Lab Diamond
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$10,251.00
10.08Carat
HColor
VS1Clarity
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10.20 Carat Emerald Lab Diamond
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$10,331.00
10.2Carat
HColor
VS1Clarity
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10.23 Carat Emerald Lab Diamond
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$10,362.00
10.23Carat
HColor
VS1Clarity
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10.48 Carat Emerald Lab Diamond
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$10,615.00
10.48Carat
HColor
VS1Clarity
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10.52 Carat Radiant Lab Diamond
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$10,888.00
10.52Carat
GColor
VS2Clarity
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The Biggest Diamonds

The larger the diamond, the rarer it is. The largest diamond ever discovered was the Cullinan Diamond, weighing  3,106.75 carats. Diamonds that are 10 carats or larger are a stunning choice for your pendant or ring. For larger diamonds, any color or inclusions will be noticeable. Choose a clarity grade of VS1 or better. For a diamond that appears colorless, choose a color grade of G or better. Always choose the best cut grade possible to ensure lots of sparkle - for a round-cut diamond, that's an Ideal cut. For a fancy-shaped diamond, choose a Very Good cut. Need help choosing the right diamond? Call us at 1-888-9RITANI or chat now.