Lab-grown diamonds are one of the smartest choices you can make when shopping for an engagement ring. Contrary to common belief, they’re real diamonds and not fake at all. So, you get stones with the same recognizable features. In fact, they probably sparkle even more because they have fewer flaws.
Yet, people tend to struggle finding a diamond jeweler or marketplace they can trust. So, you want someone you can rely on for a positive experience from start to finish.
Check out these trusted jewelers who bring customer service to the heart of buying lab-grown diamond engagement rings.
Rare Carat – America’s Most Trusted Marketplace
This online marketplace launched almost 10 years ago. Rare Carat is the perfect place to browse and compare a vast range of lab-grown diamonds from a variety of certified sellers, all backed by US craftsmanship.
The brand gives you access to all the diamond grades and free expert reviews you need. You can even receive personalized support from knowledgeable gemologists who can guide you through the process. It’s no wonder Rare Carat has thousands of positive reviews from satisfied customers.
Rare Carat’s lab-grown diamond selection is huge, perfect for those who want an ethical and budget-friendly edge. Shoppers also get a 30-day money-back guarantee with their purchase. Your custom ring comes with free insured shipping and returns.
Pros:
- Wide selection of lab-grown diamonds from top-rated sellers
- Easy price comparison and honest grading
- Free expert diamond reviews and personal help
- 30-day returns, insured shipping, 90-day resizing
- Fast, safe delivery
Cons:
- Fully online
- Doesn’t offer resale or buyback for lab-grown stones
Ritani – In-Person Lab-Grown Diamond Preview
Ritani is a great choice if you want online convenience with the trust of an in-person preview. The brand lets you design your lab-grown diamond ring on the website. Then, you can choose to visit a local store to see your design before buying.
Ritani’s lab-grown selection covers a relatively big range of shapes and sizes, which means there’s plenty of choices available. For shoppers, the clear pricing and detailed diamond info make a big difference when it comes to narrowing down their lab-grown choices. Besides, all lab-grown diamond custom jewelry comes with a lifetime warranty.
If you’re set on seeing your diamond in person first, the free local preview comes with geographical limitations. Not every city is set with partner jewelry stores, so sometimes there’s no other choice than to buy online without seeing your design.
Pros:
- Good range of lab-grown diamonds
- Free local preview at partner stores
- Clear pricing
Cons:
- Local preview only available in select cities
- Smaller inventory than other marketplaces
Whiteflash – Premium Cut Quality in Lab-Grown Diamonds
Whiteflash is for those who want a diamond with a top-quality sparkle. Even when working with lab-grown diamonds, there can be significant differences. Whiteflash started 25 years ago in Texas, and has built a reputation in selecting diamonds with excellent light performance and clear grading. They work with both traditional and lab-grown diamonds.
Whiteflash’s lab-grown selection meets very strict standards for brilliance and consistency. In other words, if you are looking for a lab-grown diamond with the highest sparkle ratio, this is the place to go. There are no surprises with this marketplace. So, when you purchase your custom jewelry piece with lab-grown diamond, you will benefit from secure shipping and a trade-up program if you choose to upgrade your diamond at any point in the future.
Just keep in mind that their lab-grown inventory can be limited. Also, compared to other online places, Whiteflash’s price ranges remain high, even for lab-grown stones.
Pros:
- Trusted for high-quality, well-graded lab-grown diamonds
- Clear grading and helpful diamond info
- Lifetime trade-up program
Cons:
- Smaller lab-grown inventory than bigger sellers
- Premium quality can mean higher prices
- Less support throughout the process
Helzberg Diamonds – Lab-Grown Rings with a Huge Local Service
Helzberg Diamonds is one of America’s oldest and most trusted jewelry chains. The brand also features a large selection of lab-grown diamonds among its range.
Helzberg’s “Create Your Own” ring experience is a great option for couples to create a custom ring set with a lab-grown diamond. You have the choice to start and complete your design online. With almost 20,000 lab-grown diamonds to choose from, you need to be knowledgeable about diamonds to make the right choice online.
But, you can also reach out to an in-house expert in one of their stores across the US. In-person appointments. This can be time-consuming, especially when you consider the number of customers each store welcomes on a daily basis. Yet, this is often necessary to make sense out of the many custom options online.
Bonus point: Helzberg’s flexible payment plans make quality diamonds more affordable.
Pros:
- Trusted national jeweler with strong local service
- Easy online and in-store lab-grown ring design
- Flexible pricing and helpful consultants
Cons:
- No online guidance available
- Limited certification details compared to specialist marketplaces
Brilliant Earth – Best for Ethical Lab-Grown Diamond Rings
Brilliant Earth is a must-know for ethical and sustainable jewelry choices. The San Francisco brand has always favored conflict-free gem sourcing. Besides, they also use recycled metals and vintage jewelry as part of their sustainability commitment.
Lab-grown diamonds are, naturally, a big part of their collection. You can design a custom ring online. The different choices can feel overwhelming if you are not used to designing your jewelry. So, it’s often best to book an appointment at one of Brilliant Earth’s showrooms to see stones in person.
Brilliant Earth backs its rings with free shipping, a lifetime warranty, and a 30-day return policy.
Just remember that the whole custom process can be more time-demanding and less budget-friendly, especially for a company that is dedicated to sustainable production across its range.
Pros:
- Strong focus on ethical lab-grown diamonds
- Stylish mix of vintage and modern designs
- Online builder plus showroom appointments
Cons:
- Higher prices across the whole process
- Custom rings may need extra lead time
Final Thoughts
Lab-grown diamonds are proof that you don’t have to choose between beauty, value, and peace of mind. When you want a custom diamond ring that is also ethical and easy to design, these trusted jewelers can make the process more manageable for you. Each has its own strong points, so there is no right or wrong. You want to pick the brand that feels right for you.

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