Best Lab Grown Diamonds USA

The perfect pieces for every moment

Whether you’re treating yourself or celebrating something special, our inspiring selection of high-quality designs means you’ll always find just the right thing

c6diamonds

HANDCRAFTED & ETHICALLY SOURCED

FAIR PRICING

More transparent and fair price—making luxury more accessible without compromising on quality.

HIGH QUALITY

Lab-grown real diamonds are chemically and physically identical to mined diamonds.

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TRENDING PRODUCTS

Mojuri

18K Yellow Gold Wave Lab Solitaire Diamond Ring

Mojuri

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18K Yellow Gold Wave Lab Solitaire Diamond Ring

$225.00

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Mojuri

14K Yellow Gold Wave Lab Solitaire Diamond Ring

Mojuri

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14K Yellow Gold Wave Lab Solitaire Diamond Ring

$160.00

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Mojuri

10K White Gold Heart Cut Diamond Solitaire Engagement Ring

Mojuri

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10K White Gold Heart Cut Diamond Solitaire Engagement Ring

$200.00

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Mojuri

18K White Gold Heart Cut Diamond Solitaire Engagement Ring

Mojuri

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18K White Gold Heart Cut Diamond Solitaire Engagement Ring

$340.00

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Mojuri

10K Yellow Gold Star Solitaire Diamond Ring

Mojuri

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10K Yellow Gold Star Solitaire Diamond Ring

$100.00

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Mojuri

18K Yellow Gold Star Solitaire Diamond Ring

Mojuri

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18K Yellow Gold Star Solitaire Diamond Ring

$235.00

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Mojuri

14K Yellow Gold Star Solitaire Diamond Ring

Mojuri

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14K Yellow Gold Star Solitaire Diamond Ring

$170.00

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Mojuri

10K Yellow Gold Wave Lab Solitaire Diamond Ring

Mojuri

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5 5

6 6

7 7

8 8

10K Yellow Gold Wave Lab Solitaire Diamond Ring

$100.00

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Mojuri

Quick View

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4 4

5 5

6 6

7 7

8 8

18K Yellow Gold Wave Lab Solitaire Diamond Ring

$225.00

Select options

Mojuri

Quick View

Select options

4 4

5 5

6 6

7 7

8 8

14K Yellow Gold Wave Lab Solitaire Diamond Ring

$160.00

Select options

Mojuri

Quick View

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4 4

5 5

6 6

7 7

8 8

10K White Gold Heart Cut Diamond Solitaire Engagement Ring

$200.00

Select options

Mojuri

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4 4

5 5

6 6

7 7

8 8

18K White Gold Heart Cut Diamond Solitaire Engagement Ring

$340.00

Select options

Mojuri

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4 4

5 5

6 6

7 7

8 8

10K Yellow Gold Star Solitaire Diamond Ring

$100.00

Select options

Mojuri

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4 4

5 5

6 6

7 7

8 8

18K Yellow Gold Star Solitaire Diamond Ring

$235.00

Select options

Mojuri

Quick View

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4 4

5 5

6 6

7 7

8 8

14K Yellow Gold Star Solitaire Diamond Ring

$170.00

Select options

Mojuri

Quick View

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4 4

5 5

6 6

7 7

8 8

10K Yellow Gold Wave Lab Solitaire Diamond Ring

$100.00

Select options

Mojuri

Quick View

Select options

4 4

5 5

6 6

7 7

8 8

18K Yellow Gold Wave Lab Solitaire Diamond Ring

$225.00

Select options

Mojuri

Quick View

Select options

4 4

5 5

6 6

7 7

8 8

14K Yellow Gold Wave Lab Solitaire Diamond Ring

$160.00

Select options

Mojuri

Quick View

Select options

4 4

5 5

6 6

7 7

8 8

10K White Gold Heart Cut Diamond Solitaire Engagement Ring

$200.00

Select options

Mojuri

Quick View

Select options

4 4

5 5

6 6

7 7

8 8

18K White Gold Heart Cut Diamond Solitaire Engagement Ring

$340.00

Select options

SUMMER COLLECTIONS

Freshwater pearl necklace and earrings

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MAKE IT MEMORABLE

Freshwater pearl necklace and earrings

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TESTIMNONAILS

"Very Happy with C6Diamonds"

Excellent company and a beautiful purchase — I’m very happy with my experience! I purchased two 2.00 ct high-quality lab-grown diamonds with posts for earrings and was thoroughly impressed. The diamonds are IGI certified, and all documentation was included. The quality, presentation, and overall value were outstanding. Truly hard to beat!

Robert Curry, Mexico

"Excellent Service from Start to Finish"

I had a great overall experience—from scheduling the appointment, to learning about the right diamond and setting that matched what I was looking for, to the final pickup. My specialist, Adesh & Shruti, was incredibly friendly, positive, and truly focused on helping me find the perfect piece. I really appreciated the knowledgeable and supportive service throughout the entire process.

Andrew Claus, Canada

"Lovely Earrings and Friendly Staff"

I purchased pavé huggie hoops, and they are absolutely perfect. The diamonds are delicate and dainty, yet they sparkle beautifully and catch the light just right. I couldn’t be happier with how elegant and versatile they look. The staff was incredibly friendly and enthusiastic, which made the entire shopping experience even more enjoyable. I truly love these earrings and will definitely be shopping here again!

Ashley Jackson, Toronto, Canada

"Affordable Prices"

The best experience with C6diamonds picking out the perfect engagement ring. Extremely patient and never pressured us into buying anything until we were certain of what we wanted. Guided us through every process and very trustworthy on delivery. Could not recommend them highly enough. Thank you for the perfect ring and an easy procedure.

Fatema Khalifa, Dubai

“Customized Design”

I got customized jewelry and Totally loved the jewellery. I am a repeat customer and always have an awesome experience with them. I would certainly recommend C6DIAMONDS.COM for their prompt service, quality diamonds with certification and exclusive diamond jewellery.

Heenal Parbhoo, Switzerland

“I love this Pendant”

I was hesitant to buy a diamond online but the process was pretty smooth and the diamond was amazing! I also received the certificate which was accurate. As I am an international buyer, everything took much longer but it was worth it. I would definitely purchase from this store again! Thank you!

Aadhya, London

“Amazing Piece Of History”

What can I say, I’m a person who reviews before purchasing and I found C6 Diamonds from google and they were very professional. They were very transparent about the diamond and also the logistic (in which I was surprise because I wanted the ring before my sisters engagement ) was the best as I received the earrings before the engagement. I highly recommend C6 diamonds for their Quality Diamonds & transparent Policy.

Abu Salman, Dubai

"Exceptional Craftsmanship and Quality"

This product was even more beautiful than I had imagined. The metal is of fantastic quality—smooth, polished, and well-weighted. My fiancée will be thrilled when she sees her dream ring come true. I am very pleased with my purchase from C6Diamonds.

John Doe

"Loved the Earrings"

The earrings are absolutely stunning, and I couldn’t be happier with the quality and design – they truly exceeded my expectations! However, I gave the overall experience a 4-star rating because I received only one gift box, even though I had purchased two pairs of earrings. Beautiful packaging really adds to the joy of gifting, and I was hoping for a separate box for each pair. Still, I'm very happy with the products themselves and look forward to shopping again!

Johnny Breast, England

"Easy and Pressure-Free"

Exceptional experience with C6Diamonds Bit hesitating before ordering but after their output, felt very happy. Best prices for diamond and low making charges when compared others…! Completely loved the experience. Delivered everything that promised while accepting the order.

Devin, kuwait

"Outstanding & Warm Service"

The C6DIAMONDS team was exceptionally professional and helpful throughout my search for the perfect engagement ring. Samantha and Drew were warm, welcoming, and made me feel completely at ease. I've already recommended C6DIAMONDS to my friends and will continue to do so!

Justin Allan, Australia

"Lab-Grown Diamonds Are Gorgeous"

The earrings I purchased are absolutely beautiful, and I’m confident my daughter will love them. The quality is excellent, they arrived promptly, and the packaging was elegant and thoughtfully done. Very pleased with the overall experience.

Anisa, New York

Perfect Ring, Perfect Experience"

I purchased my engagement ring in early April and was paired with Sonder, who was incredibly helpful throughout the process. They truly listened to what we wanted and guided us in creating the perfect ring. As someone with no prior knowledge, I appreciated the supportive, pressure-free experience—unlike other places I’ve visited. The process was quick, smooth, and straightforward. I highly recommend C6Diamonds for their wide selection and knowledgeable staff.

Caroline, New Zealand

"Supportive Service, Perfect Choice"

We stopped by a store where the staff was very helpful and friendly. They provided all the information we needed to place an order online, without being pushy at all. This made it easy for my husband to order when our anniversary came around. We truly appreciated their assistance — and I absolutely love my ring!"

Jessica Schreib, Belgium

"A Memorable Graduation Gift"

I was looking for the perfect signet ring as a graduation gift for my son, and found exactly what I needed at C6DIAMONDS. The team was incredibly supportive in planning the surprise, and I’m truly grateful. The ring is beautifully crafted with exceptional detail and engraving. The entire process—from ordering to home delivery—was smooth and professional. I’ll definitely be back for another purchase—this time, for myself!

Olivia, Luxembourg

"Impressive Quality and Amazing Price"

I purchased this as a wedding gift for my niece, and she absolutely loved it. The quality and finish of the piece are exceptional, and the included certificate is exactly as described. We were thrilled to find such a beautiful and well-crafted item at such an excellent price. It’s not often you come across a product that combines both superior quality and great value. We’re very happy with our overall purchase and will definitely consider buying from here again in the future!

Amelia, Italy

"Beautiful Tennis Bracelet"

This was my first time ordering jewelry online, and I couldn't be more pleased with my purchase. I was thrilled to find an 14k gold lab grown diamond bracelet, and it's absolutely gorgeous. The diamonds are incredibly sparkly, and the quality is truly excellent. It was the perfect Mother's Day gift, and it looks even more beautiful in person. I’m extremely happy with my new bracelet and will definitely be purchasing from C6DIAMONDS again in the future.

Sophia, Florida

"Flawless Ring, Perfect Proposal!"

The website was incredibly user-friendly, making it easy to design the perfect ring for my proposal. It arrived within 5 days, and the ring was even more beautiful than I had imagined. My fiancée receives compliments on it all the time! I'm very impressed with the service and quality. I'll definitely be getting our wedding bands through C6Diamonds as well.

Anthony Ditmars, Colorado, USA