Our Best Brilliance review verdict
Best Brilliance suits buyers who find a ring design they love and want a jeweler to help put the purchase together. Our research praised the helpful service and attractive jewelry, but found it harder to compare the exact diamonds and separate their cost from the settings.
We rate Best Brilliance 3.9/5. We would consider a well-specified piece at a competitive finished price, but would settle the diamond details and return eligibility before ordering. Best Brilliance is a separate retailer from Brilliance.com and Grown Brilliance.
What we like
The designs and personal guidance are the main attractions. In our research, the support team gave clear, useful answers and helped with diamond-pairing choices. That can make an unfamiliar purchase easier.
What we like less
The assisted approach gives the seller more control over the diamond selection. It is harder to compare value when you do not have the exact stone's report and images in front of you. The current cancellation and return exclusions also deserve attention before payment.
The bottom line
Buy the finished piece because you like its design, specifications and price, not because of a large advertised discount. For shoppers who prefer to choose a loose diamond themselves, we would start with Ritani or compare our recommended jewelers.
Who are Best Brilliance?
Best Brilliance dates its business to 2013 and names Guy Mendel as founder and CEO. Its current company page describes a made-to-order jewelry business. It emphasizes lab-grown diamond and moissanite designs, so check the stone type when browsing different collections.
Is Best Brilliance legitimate?
Yes. Best Brilliance is an established online jeweler, and our research found a responsive business with helpful advisers. We consider it a possible choice for a specific piece, while preferring more control over the diamond selection than its standard shopping approach provides.
A legitimate seller can still be a poor fit for your budget or return needs. The important question is whether the exact jewelry and terms work for you.
Lab-grown diamonds and the jewelry selection
Our review covered both mined and lab-grown pieces. The current range prominently includes lab-grown rings with a choice of shapes, metals and settings.
Lab diamonds are real diamonds. Moissanite, which also appears in the company's current description, is a different gemstone. Compare like with like rather than assuming every design pictured uses a lab-grown diamond.
Choosing a loose diamond
Our criticism was not that Best Brilliance could never source a particular diamond. It was that the normal website journey did not provide the same open, stone-by-stone comparison we used at loose-diamond specialists.
The current lab-grown ring collection remains focused on named designs sold with a diamond. If you want to compare several individual stones, ask the adviser to supply their reports and images before choosing.
Engagement rings and other jewelry
We liked the expansion of the jewelry range in our reviews, including earrings, pendants and bracelets alongside engagement rings.
The choice of a finished design can be a strength. You do not have to become an expert in every possible setting to find something you like. You should still know which diamond will be used and what changes you can request.
Diamond certification
In the buying process, we could not freely compare the reports for individual diamonds before working with the seller. The current Diana ring listing names IGI and gives the center stone's intended grades, which is useful. A named laboratory on a product page is still different from a report for your allocated diamond.
Ask for the exact report number and a readable report, plus photographs or a video of that diamond. Keep these with the order details. A grade range is less precise than a confirmed specification.
What about clarity-enhanced diamonds?
Our review also discussed clarity-enhanced mined diamonds. Do not confuse those with ordinary lab-grown diamonds: the terms describe different things.
Clarity treatments can include laser drilling or fracture filling. GIA explains the difference: fracture filling is less durable and needs special care. Our preference is to avoid treated stones when an attractive untreated alternative fits the budget. Ask whether the stone has any treatment, rather than assuming all products from the same seller are alike.
The Best Brilliance buying process
The process began with a shape and ring design, followed by the details of the finished piece. The choice was simpler than working through a large inventory, although it gave us less direct control over the diamond.
We found product photographs and a rotating view useful for judging the style. They were not a substitute for footage of the individual stone being allocated to the ring.
For a purchase today, we suggest four steps:
- Choose the design and metal you want.
- Confirm the center stone's weight, measurements, grades, report and images.
- Get the complete price and expected delivery date.
- Establish whether the standard configuration is returnable before requesting engraving, resizing or bespoke changes.
A preselected ring is not automatically worse than a ring you build yourself. The trade-off is how much control you want and how clearly the jeweler explains what you will receive.
Customer service
Service was one of the better parts of our experience. We found the staff knowledgeable and willing to explain the choices. An evening message was answered the following morning on a weekend. We appreciated getting a useful reply without waiting until Monday.
The current product pages still offer virtual appointments. Use a call to ask specific questions and see the options, then take time to compare. You should not feel that you must decide during the conversation.
We would ask which parts of the ring can be changed, whether those changes make it final sale, and when the exact diamond details will be available. Helpful service matters most when it leaves you with a clear understanding of the purchase.
Best Brilliance had 4.8 out of 5 from 461 Trustpilot reviews, including 89 in the previous 12 months when checked in September 2026. Buyers frequently praise the finished rings, custom-design help, communication and packaging. The smaller number of critical accounts mention certification paperwork, technical contact problems, damaged items or clarity around final design approval. Read Best Brilliance reviews on Trustpilot.
Best Brilliance lab-grown diamond prices
Our past comparisons found some reasonable prices and others above the best-value online sellers. Comparing a complete ring was harder than comparing loose stones because the price included the setting and we could not always inspect the exact diamond report.
On September 9, 2026, the Diana oval ring in 14K yellow gold was listed at $1,290 with a one-carat center stone. The page stated E color, VS1 clarity and IGI certification, with a two-to-three-week shipping estimate. Check the price and configuration before ordering.
Compare the complete ring with similar metal, stone size and design elsewhere. Do not calculate the saving solely from a crossed-out reference price.
If the quotation seems high, ask whether a different stone can meet your visual preferences for less. We care more about an attractive diamond at a fair price than an unnecessarily high grade that adds little to the finished piece.
Shipping, returns and cancellation
Check Best Brilliance's return policy before committing to a design, especially a personalized ring.
Eligible, unworn items can be returned within 30 days of delivery. Custom, personalized and engraved pieces are excluded; exchanged items are final sale, and resized pieces cannot be refunded. Ask whether the exact configuration you are ordering is eligible.
The policy says cancellation or modification after 12 hours incurs a 20% fee. It also says original shipping charges are deducted from refunds. Those conditions make it important to settle the design and terms before paying. Confirm any return-shipping cost instead of assuming every return is free.
A complimentary resize is useful after you decide to keep a ring. Avoid using it before you have decided, given the refund restriction. For a proposal or gift, allow enough time for production, delivery and inspection.
Our final Best Brilliance verdict
Best Brilliance remains worth considering for its designs and assisted service. You can get help choosing a complete piece instead of navigating a large loose-diamond search alone.
We prefer more direct comparison of the actual stone, and its current order-change and return restrictions would make us careful about committing too early. At 3.9/5, it is an alternative for a design you particularly like, rather than our first recommendation for everyone.
Compare the complete quotation with the options in our Grown Brilliance review and With Clarity review, or compare lab-grown diamonds at Ritani, before making the final choice.
How we reviewed Best Brilliance
Rolf Hartmann led the jewelry and product-page comparisons, inspected the available diamond information, researched prices and spoke with customer service. The screenshots show the choices and information behind our conclusions, and Klaus Thorup is the current author and editor.
In September 2026, we also checked the company description, lab-grown ring collection, a specific product listing, cancellation and return policy, and recent customer feedback.
Why trust our assessment?
We explain both what we liked and what would make us choose another jeweler. Our recommendation depends on the diamond, jewelry, service and terms, not simply whether the seller has an affiliate program.
How we judge the seller
We weigh design choice, diamond information, price, shopping help, service and aftercare. A convenient buying process earns credit, but does not replace clear specifications and fair terms. Our 3.9/5 is an editorial rating, not an average of customer reviews.
Share your Best Brilliance experience
If you have bought from Best Brilliance, tell us what you ordered and how the diamond, communication and aftercare compared with your expectations. You can contact us with your experience.
Reader reviews
Our editorial rating is separate from reader feedback. Tell us about the piece you chose and what would help another shopper decide.
Questions and experiences
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