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3 Carat Diamonds

A statement piece. Substantial in size with a commanding presence. This is how you would describe a 3 carat diamond ring, and rightly so, because of its effortless extravagance. Designed to draw the attention of the crowd, it's a testament to a love that is loud and proud. Ritani's selection of 3 carat diamonds stands out from a sea of gemstones. Featuring earth-grown and lab-grown diamonds, we offer you a piece of historied jewelry custom-designed to suit your style.
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.
Type
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.
More Filters
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
Very 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
Fair
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
Medium
Slightly Large
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
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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
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.
3.10 Carat Round Diamond
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Natural
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3.01 Carat Round Diamond
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Natural
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3.01 Carat Round Diamond
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3.01 Carat Emerald Diamond
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3.00 Carat Oval Diamond
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Natural
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3.08 Carat Round Diamond
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Natural
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3.01 Carat Round Diamond
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Which diamond is right for you? Check out our Diamond Education Center to help guide your decision.
3.00 Carat Cushion Diamond
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Natural
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3.01 Carat Oval Diamond
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Natural
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3.01 Carat Round Diamond
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3.01 Carat Cushion Diamond
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3.01 Carat Cushion Diamond
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Natural
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3.01 Carat Oval Diamond
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3.05 Carat Round Diamond
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3.01 Carat Cushion Diamond
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3.01 Carat Oval Diamond
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Natural
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3.01 Carat Emerald Diamond
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Natural
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3.00 Carat Oval Diamond
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Natural
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3.00 Carat Round Diamond
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3.02 Carat Pear Diamond
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3.01 Carat Oval Diamond
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3.00 Carat Cushion Diamond
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Natural
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3.01 Carat Cushion Diamond
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Natural
BEST VALUE
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Which diamond is right for you? Check out our Diamond Education Center to help guide your decision.
3.01 Carat Radiant Diamond
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A statement piece. Substantial in size with a commanding presence. This is how you would describe a 3 carat diamond ring, and rightly so, because of its effortless extravagance. Designed to draw the attention of the crowd, it's a testament to a love that is loud and proud. Ritani's selection of 3 carat diamonds stands out from a sea of gemstones. Featuring earth-grown and lab-grown diamonds, we offer you a piece of historied jewelry custom-designed to suit your style.

The Ritani Difference

Ritani offers a wide range of 3 carat diamonds in various cuts, including oval, radiant, cushion, pear and round. Handcrafted by experts in New York, our diamonds deliver elegance and clarity that gives you the most value for your money. Our selection of AGS- and GIA-certified 3 carat loose diamond stones makes a great highlight for your jewelry piece, whether as a ring, an earring, a necklace or a bracelet.

Shop 3 Carat Diamonds Online

Astonish everyone with a 3 carat diamond on your finger, designed by some of the best craftspeople, to fit your personal aesthetics. Buy 3 carat diamond pieces starting at $8,000, depending on your preferred cut, color and clarity. Learn more about our 3 carat diamond price transparency for a full cost breakdown. Shop loose diamonds and jewelry from Ritani online.​

If you need help selecting your 3-carat diamonds, reach out to us at 1-888-9RITANI or chat now.

Frequently Asked Questions

  • How much is a 3-carat diamond?
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    A 3-carat diamond can cost anywhere from $10,000 to $500,000 depending on the 4 C's: cut, color, clarity and carat. The median cost is about $40,000.

  • Are 3-carat diamonds available in different shapes?
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    Yes, 3-carat diamonds are available in various shapes including round, cushion, princess, asscher, oval, emerald, radiant, heart, pear, and marquise.

  • Are Ritani's 3-carat diamonds ethically sourced?
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    Yes, Ritani is committed to ethical sourcing. All of our diamonds, including the 3 carat diamonds, are conflict-free and comply with the Kimberley Process, ensuring they are sourced responsibly and ethically.

  • Can I customize the setting for a 3-carat diamond?
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    Yes, you can customize the setting for a 3-carat diamond by selecting your preferred setting style and metal on Ritani's website.
  • Can I insure my 3-carat diamond ring?
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    Yes, you can insure your 3-carat diamond ring just like any other piece of valuable jewelry. The cost of 3-carat diamond ring insurance will vary based on the specifics of your price. 

  • Can I view 3-carat diamonds before purchasing?
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    Yes, you can view 3-carat diamonds through Ritani's "Try Before You Buy" program, where you can schedule an in-person preview with a Preview Specialist.

  • Do 3-carat diamonds come with a certification?
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    Yes, all 3-carat diamonds at Ritani are certified by reputable gemological institutes such as GIA, AGS, or IGI.

  • Do you offer financing options for 3-carat diamond purchases?
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    Yes, we offer financing options for 3-carat diamond purchases through Affirm. You can choose to pay for your diamond over time with easy monthly payments. Select Klarna at checkout to apply.

  • How are 3-carat diamonds certified?
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    Ritani's 3-carat diamonds are certified by reputable gemological laboratories such as the Gemological Institute of America (GIA) and the American Gem Society (AGS). These certifications provide an assessment of the diamond's quality and authenticity.

  • How do I care for a 3-carat diamond ring?
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    To care for a 3-carat diamond ring, clean it regularly with a mild soap solution and a soft brush, avoid harsh chemicals and store it safely when not in use. Regular professional inspections and cleanings are also recommended.

  • How do I choose the right 3-carat diamond?
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    To choose the right 3-carat diamond, consider the 4C's: cut, color, clarity and carat. Our website offers detailed guides and filters to help you find a diamond that matches your specifications and budget for a 3-carat diamond ring price.

  • Is there a warranty on 3-carat diamond rings?
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    Yes, Ritani offers a lifetime warranty on all engagement rings and wedding bands, including those with 3-carat diamonds, covering manufacturing defects.
  • What are the benefits of choosing a 3-carat diamond?
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    A 3-carat diamond is a significant and eye-catching size that offers excellent value for those looking to make a bold statement. It appears larger and more impressive without being overly extravagant.

  • What factors influence the price of a 3-carat diamond?
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    The price of a 3-carat diamond is influenced by its cut, color, clarity, and carat weight. Other factors include the diamond's shape, certification and market demand. Ritani offers a Diamond Price Match Guarantee to ensure you get the best price.

  • What is the return policy for 3-carat diamonds?
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    Ritani offers a 30-day return policy for 3-carat diamonds, provided the items are in their original condition and accompanied by all documentation.

  • What settings are best for 3-carat diamonds?
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    The best settings for a 3-carat diamond are those that securely hold the stone while showcasing its size and brilliance. Popular settings include solitaire, halo and three-stone settings.

  • What types of diamonds are available in the 3-carat diamonds collection?
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    The 3-carat diamonds collection includes a variety of diamond shapes and styles. You can choose from round, princess, cushion, emerald and more, ensuring you find the perfect diamond for your needs.