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3 Carat Lab Grown Diamonds
Command attention with our 3 carat lab-grown diamonds, which match the brilliance and beauty of any natural diamond on the market. The only noticeable difference is the price.
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.
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
A well-polished diamond will have excellent light return.
Excellent
Very Good
Good
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
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
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.
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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You can connect with a commission free gemologist instantly and receive a live diamond inspection on any diamond. You can also connect and shop together and compare up-to three diamonds at a time instantly. Try it out. Start your diamond concierge consultation today.
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Command attention with our 3 carat lab-grown diamonds, which match the brilliance and beauty of any natural diamond on the market. The only noticeable difference is the price.
Our Collection of 3 Carat Lab-Grown Diamonds
Our collection of loose 3 carat lab-grown diamonds comes in varying clarities, with popular stones offering flawless radiance and the most ideal cut. We have nine different colors to pick from, allowing you to select a piece that showcases your personality.
If you want a diamond that screams absolute perfection, consider our IGI-certified D-FL diamonds. This combination of color and clarity offers unmatched beauty and brilliance.
Why Buy Ritani Diamonds
At Ritani, we understand every milestone deserves to be celebrated. With our range of diamonds, we help you pick out the perfect gifts. Whether you are ready for the next step in your relationship and seeking a 3 carat lab-grown diamond ring or you want a custom pendant necklace for a birthday gift, we offer our clients high-quality diamonds perfect for any setting.
Choose High-Quality Diamonds
We are leaders in the lab-grown diamond industry. With years of experience and proven expertise, our clients enjoy various specialized services and competitive pricing on their 3 carat lab-grown diamonds. Look through our online collection or get in touch with us, and we can help.
If you need help selecting your 3 Carat Lab Grown Diamonds, reach out to us at 1-888-9RITANI or chat now.
Shop by Carat Weight
- 0.25 Carat Lab Grown Diamond
- 0.5 Carat Lab Grown Diamond
- 0.75 Carat Lab Grown Diamond
- 1 Carat Lab Grown Diamond
- 1.25 Carat Lab Grown Diamond
- 1.5 Carat Lab Grown Diamond
- 1.75 Carat Lab Grown Diamond
- 2 Carat Lab Grown Diamond
- 2.5 Carat Lab Grown Diamond
- 3 Carat Lab Grown Diamond
- 3.5 Carat Lab Grown Diamond
- 4 Carat Lab Grown Diamond
- 5 Carat Lab Grown Diamond
Shop by Shape
- 3 Carat Asscher Cut Lab Grown Diamond
- 3 Carat Heart Shaped Lab Grown Diamond
- 3 Carat Marquise Cut Lab Grown Diamond
- 3 Carat Oval Cut Lab Grown Diamond
- 3 Carat Radiant Cut Lab Grown Diamond
- 3 Carat Emerald Cut Lab Grown Diamond
- 3 Carat Round Cut Lab Grown Diamond
- 3 Carat Cushion Cut Lab Grown Diamond
- 3 Carat Pear Shaped Lab Grown Diamond
- 3 Carat Princess Cut Lab Grown Diamond
Shop by Color
Shop by Cut
Frequently Asked Questions
Are 3-carat lab-grown diamonds available in different shapes?
Yes, 3-carat lab-grown diamonds are available in various shapes including round, cushion, princess, asscher, oval, emerald, radiant, heart, pear, and marquise.Are Ritani's 3 carat lab-made diamonds ethically sourced?
Yes, Ritani is committed to ethical sourcing. All of our lab-grown diamonds, including the 3 carat diamonds, are created using environmentally friendly processes and are conflict-free.Can I customize jewelry with a 3 carat lab diamond?
Yes, you can customize jewelry with a 3 carat lab-grown diamond at Ritani. You can select the type of metal, setting style, and other details to create a unique piece that reflects your personal style.Can I customize the setting for a 3-carat lab-made diamond?
Yes, you can customize the setting for a 3-carat lab-grown diamond.Can I insure my 3-carat lab-created diamond ring?
Yes, you can insure your 3-carat lab-grown diamond ring just like any other piece of valuable jewelry.Can I preview a 3 carat lab-grown diamond before purchasing it?
Yes, Ritani offers a free in-person preview program that allows you to see a 3 carat lab-grown diamond before purchasing it. You can select a diamond online and have it sent to a participating jeweler near you for an in-person viewing.Do 3-carat lab-grown diamonds come with a certification?
Yes, all 3-carat lab-grown diamonds at Ritani are certified by reputable gemological laboratories such as GIA, IGI, or AGS.Do you offer financing options for 3 carat lab-grown diamond purchases?
Yes, we offer financing options for 3 carat lab-grown diamond purchases through Affirm. You can choose to pay for your diamond over time with easy monthly payments. Select Affirm at checkout to apply.How are 3 carat lab-grown diamonds certified?
Ritani's 3 carat lab-grown diamonds are certified by reputable gemological laboratories such as the Gemological Institute of America (GIA) and the International Gemological Institute (IGI). These certifications provide an assessment of the diamond's quality and authenticity.How do I care for a 3-carat lab grown diamond ring?
To care for a 3-carat lab-grown 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 lab-grown diamond?
To choose the right 3 carat lab-grown diamond, consider the 4 Cs: cut, color, clarity, and carat weight. Our website offers detailed guides and filters to help you find a diamond that matches your specifications and budget.Is there a warranty on 3-carat lab-made diamond rings?
Yes, Ritani offers a lifetime warranty on all engagement rings and wedding bands, including those with 3-carat lab-grown diamonds, covering manufacturing defects.What factors influence the price of a 3 carat lab-grown diamond?
The price of a 3 carat lab-grown diamond is influenced by its cut, color, clarity, and carat weight. Lab-grown diamonds are typically more affordable than natural diamonds of comparable quality.What is the price range for 3-carat lab-grown diamonds at Ritani?
The price range for 3-carat lab-grown diamonds at Ritani varies based on the diamond's quality, including its cut, color, clarity, and certification. Prices typically start from around $15,000 and can go up significantly.What is the return policy for 3-carat lab made diamonds?
Ritani offers a 30-day return policy for 3-carat lab-grown diamonds, provided the items are in their original condition and accompanied by all documentation.What settings are best for 3-carat lab-grown diamonds?
The best settings for a 3-carat lab-grown diamond are those that securely hold the diamond while showcasing its size and brilliance. Popular settings include solitaire, halo, and three-stone settings.
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