Best Brilliance
USD 1995
Pros
- Fantastic customer service
- White-glove concierge buying process
- High quality diamonds
- Accurate and honest information about lab diamonds
Cons
- Prices range from decent to high
- You can't compare and inspect diamonds
- No access to diamond certificates.
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- Best Brilliance Review Introduction
- What We Didn't Like About Best Brilliance
- The Bottom Line
- How We Reviewed Best Brilliance in 2025
- Who are Best Brilliance Diamonds?
- Best Brilliance Sells Both Mined and Lab-Grown Diamonds
- Buying Process
- Best Brilliance Customer Service
- Best Brilliance Lab-Grown Diamond Prices
- Shipping and Returns
- Best Brilliance Review Verdict
- Our Readers' Best Brilliance Reviews
Best Brilliance Review Introduction
In our comprehensive 2025 Best Brilliance review, we take a closer look at their selection of lab-grown diamond jewelry to help you decide if they’re the right choice for your needs. Read on to see if Best Brilliance stands out in today’s competitive diamond market!
Best Brilliance has been on the market since 2013 and sells diamond engagement rings and diamond jewelry pre-set with select diamonds. They sell both mined and lab-grown diamonds.
Best Brilliance embraces various selling platforms, including eBay and Etsy. This is similar to retailers such as Friendly Diamonds and Grown Brilliance. These platforms make up a large share of their sales, but they also sell through their own website. In our Best Brilliance review, we’ll focus on the buying experience on their own site. However, you may prefer the certainty of buying through Etsy.
3 Diamond Jewelers We Like Better Than Best Brilliance
In this Best Brilliance review, we learn that we like many things about Best Brilliance, but we also have some grievances. If you’re short on time, here’s what you need to know.
What We Like About Best Brilliance
- Beautiful Jewelry Collection
Best Brilliance has significantly expanded its lab-grown diamond jewelry selection since the last time we reviewed them. Today, their collection of lab-grown diamond pieces rivals their mined diamond offerings in size. This is great news for fans of their designs, which span the classic to modern and creative. - Transparent Lab Diamond Education
We like that they are very clear and honest about the benefits of lab-grown diamonds over mined. In fact, they’re 60-80% cheaper and do not negatively impact the environment and society the same way as mined diamonds do.
Best Brilliance does a great job highlighting these benefits and has dedicated pages explaining what these are and fairly truthfully compares mined to lab-created diamonds. - Excels in Customer Service
Best Brilliance offers excellent customer service, including the option to schedule virtual appointments with a trained gemologist who can help you through the complicated process of buying a diamond. They also have excellent customer service through chat and phone, and they’ll happily guide you and offer advice.
What We Didn’t Like About Best Brilliance
- No Loose Diamonds or Certificates
Best Brilliance does not sell loose diamonds, and they do not give you access to diamond certificates. That’s because they only offer pre-set jewelry and engagement rings, where you cannot pick the exact diamond you want. - No Customization with Pre-Set Jewelry
While pre-set options can be convenient, they often pair jewelry with sub-par diamonds. That said, Best Brilliance generally uses high-quality diamonds with their jewelry, including their engagement rings. - 24/7 Service Claims
They advertise their customer service as being 24/7. However, when we contacted them at odd hours (evening), they were, in fact, not online. The 24/7 is thus a little misleading. However, they did get back to us the following morning (on a weekend). And truth be told, we prefer that over sub-par customer service with global support. - Prices
We found that the prices at Best Brilliance are fair but generally higher than what we see at the best places to buy lab-grown diamonds. Depending on the actual diamonds that they pair the jewelry with, their prices range from decent to overpriced.
The Bottom Line
Best Brilliance can be a great choice for buyers who prefer a streamlined shopping experience and are comfortable to let the jeweler have more control. If you don’t have the time or interest to educate yourself on diamonds, Best Brilliance offers convenience and ready-to-ship options with pre-set designs. But it comes at a price (quite literally) —both financially and in terms of customization flexibility.
Keep reading our full Best Brilliance review to determine if Best Brilliance is a good option for you and learn what you should be aware of.
What Do You Think About Best Brilliance?
Share your customer experiences and thoughts about Best Brilliance.
How We Reviewed Best Brilliance in 2025
As experts in lab diamonds, we have thoroughly analyzed and studied every aspect of Best Brilliance, including their diamonds and jewelry. We have compared Best Brilliance with its competitors and have ranked the pros and cons against what we find across the diamond industry.
To ensure our review is accurate and reflects the real-world journey that you, as a shopper, will experience, we have spent countless days and weeks utilizing all our expertise and experience in reviewing Best Brilliance. As part of our review process, we have thoroughly investigated the shopping experience, including buying and returning products ourselves, studying the actual diamonds and jewelry, and testing the craftsmanship. We have also subjected Best Brilliance’s customer service to a barrage of questions that you, as a customer, might have.
We update our reviews continuously to ensure they are always current, so you might see them updated. Please share your experiences with us in the comments section so we can include them in our assessments.
Why You Should Trust Us
Our team of diamond experts has accumulated decades of knowledge about diamonds and jewelers, with a combined experience of more than 75 years. Our top diamond expert, Rolf Hartmann, led our Best Brilliance review with input from several expert contributors.
Ranking Criteria
We have evaluated and ranked Best Brilliance using the following criteria:
- Diamond and jewelry prices
- Diamond inventory
- Jewelry selection
- Quality of diamonds and jewelry
- Shopping experience
- Customer service
- Sustainability
- Shipping and return policies
Who are Best Brilliance Diamonds?
Best Brilliance was established by Guy Mendel, who is also the current CEO of Best Brilliance. The company was founded with the mission to offer the finest collection of diamonds at surprisingly attractive prices. Best Brilliance does this by providing a wide variety of customized jewelry and outstanding service to numerous customers worldwide. Best Brilliance aims to be a personal jeweler who guides customers through their purchases.
Best Brilliance has existed since 2013 and is built on decades of diamond industry experience. Best Brilliance is a reputable and legit business that has served thousands of happy customers, and they sell high-quality diamond jewelry. They are trustworthy, and their customer service is fast and responsive. That said, there are numerous important factors to consider before buying a diamond and jewelry at Best Brilliance.
While there are a few complaints at Better Business Bureau, that is often the case since consumers specifically go there to complain. Overall, the Best Brilliance reviews on Etsy and eBay are overwhelmingly positive. We, too, at Labgrowncarats.com are on the whole positive in our Best Brilliance review, and we would not advise against shopping at Best Brilliance.
Best Brilliance Sells Both Mined and Lab-Grown Diamonds
Loose Lab-Grown Diamond Inventory
As mentioned earlier, they do a great job of highlighting the many benefits of lab-grown diamonds over mined. We appreciate their honesty and transparency in doing this despite selling mined diamonds, too. Unfortunately, Best Brilliance does not offer loose lab-grown diamonds the same way you see at James Allen or Ritani. Instead, Best Brilliance only sells diamond jewelry, and you are not able to browse through a catalog of tens or hundreds of thousands of diamonds as you can at Ritani and similar places.
However, their customer service will work with you to find the best diamond for your needs. You, therefore, have to leave much of the buying process in their hands. We prefer and recommend that you involve yourself more in the process, learn about diamonds, and pick between an array of potential lab-grown diamonds.
But, we know that some consumers prefer a more white-glove and uninvolved buying process, and for them, Best Brilliance may be a good option.
Lab Diamond Engagement Rings and Jewelry
Best Brilliance has expanded its ready-to-ship lab-grown diamond jewelry collection, now featuring an extensive selection of pendants, earrings, and bracelets to complement any style.
Lab-Grown Diamond Certification
The diamonds at Best Brilliance are all certified by leading diamond grading laboratories. However, since you are not buying a specific diamond and can’t browse a catalog of available stones, you cannot access and study the diamond certificates.
This is part of the buying experience at Best Brilliance. While you will receive a certificate with your purchase, and throughout the buying process, you might be able to see the certificate of the diamond they are suggesting, you’re not able to browse through numerous diamonds and certificates and compare different alternatives. You’ll have to go with what Best Brilliance suggests.
We generally recommend comparing as many diamonds as possible and studying the diamonds you are considering. For that, consider one of our top-rated diamond jewelers, such as Ritani or James Allen.
Best Brilliance Clarity-Enhanced Diamonds
Before we move to the next section of our Best Brilliance review, we’ll quickly touch upon the clarity-enhanced diamonds that Best Brilliance sells. Enhancing the clarity of diamonds is not an unusual practice. However, it is heavily debated. The process involves gently removing imperfections using a laser.
It may improve the diamond at a very low cost. However, purists do not believe it’s right to perform such enhancements. And generally speaking, the resale value of an enhanced diamond is much lower. As noted previously, we don’t believe in diamonds as an investment object. Diamonds should be bought for their beauty as jewelry pieces. If you want to invest, allocate your funds to something more productive for society.
That said, the diamond clarity-enhancing process is somewhat opaque, making it harder to assess and compare diamonds. So, in general, we advise against clarity-enhanced diamonds. Luckily, it’s more common practice with mined diamonds and not with lab-grown diamonds. And that’s also the case at Best Brilliance. From what we have learned, Best Brilliance only uses clarity enhancement with mined stones. Of course, we don’t recommend mined diamonds anyway, but we thought we would inform our readers.
Buying Process
In the part of the Best Brilliance review, we’ll walk through the buying process. Usually, we’ll go through each step of identifying suitable diamonds by comparing the diamond inspection features, such as diamond certificates and 360-degree images.
However, since Best Brilliance works more like a “personal jeweler” and doesn’t make their diamond inventory available online, we’ll instead focus on the assisted process of buying a piece of lab-grown diamond jewelry.
The first step is to decide on the diamond shape. Best Brilliance has the most common shapes for engagement rings available.
Next, you can then choose any of the ring designs. For brilliant round diamonds, there are only 9 to choose between. Having decided on a design, you land on the diamond engagement ring page, where you get access to more details about the specific ring.
There are HD images available, as well as a 360-degree video view. However, note that this is not the specific diamond you would be purchasing but rather a generic diamond stone. So, while it helps gauge the size of the diamond and the ring design, it does not help inspect the diamond you’re buying.
Best Brilliance has a nice feature that allows you to try the ring virtually. Other sellers, such as James Allen, Brilliant Earth, Ritani, and With Clarity, offer the same. It’s convenient and gives you a reasonably decent idea of how the ring would look on your hand.
As mentioned, you do not select the diamond that you pair the ring with. Instead, a generic diamond is listed with the respective diamond 4Cs. All you need to do is choose your ring size. And if you don’t know, you can get a ring sizer from Best Brilliance.
However, instead of buying the stock diamond ring, we suggest you get in contact with their support and discuss diamond pairing options.
The idea of using Best Brilliance is to take the complexity out of the buying process. While this may be appealing to some, we recommend that you take more control of the process and involve yourself. This will likely save you money and get you a more suitable stone.
But, if you prefer to go with the concierge service of Best Brilliance, we recommend that you at least compare prices with some of the best places to buy lab-grown diamond engagement rings.
Best Brilliance Customer Service
Best Brilliance has excellent customer service. That is, perhaps, not surprising given that their selling point is being a personalized jeweler. However, that is never a given, and we’re happy to report that their service and support are fantastic.
Best Brilliance offers customer service by chat, email, phone, and virtual appointments. The chat is supposedly 24/7, but we did experience that it’s more like 12/7. That is, they respond during the daytime but also on weekends. We think that is more than adequate, and we prefer that over an offshore chat center with mediocre support and knowledge.
The support at Best Brilliance is knowledgeable and provides clear answers. We’ve also found that they are honest and transparent in their guidance. They seem to have your interest at heart (but, of course, are also in the business of making money).
Virtual appointments have become increasingly popular in recent years, pioneered by the likes of James Allen, and during the pandemic, really took off. This is a great option and alternative to visiting a jeweler in person. And while you won’t get as good a look at the diamond, you are not limited to the selection they have on the given day. And you also avoid pushy salespeople.
The virtual appointments are straightforward to book (using Calendly), and they take place through Zoom, which more people are used to through work and school. You get excellent service, support, and export guidance during the appointments. However, we recommend that you do not commit to anything during a call, but instead take your time to consider your purchase. You should also take time to compare with other diamond sellers.
Best Brilliance Lab-Grown Diamond Prices
When evaluating prices in our reviews, we would typically look at the cost of loose diamonds. These are easier to compare, like for like. However, since Best Brilliance does not sell loose diamonds, it’s much more challenging to assess their prices since you cannot separate the cost of the diamond from the setting.
In addition, Best Brilliance doesn’t give you access to the diamond certificates; only once you’re further in the process you’ll be able to view a certificate for a specific diamond. So, comparing their prices with other sellers is challenging.
That said, we still tried our best by comparing similar engagement rings and the combined prices with some of our top-rated lab diamond engagement ring jewelers.
We found that, on average, the prices at Best Brilliance hover above the lab-grown diamond market leaders and, perhaps unsurprisingly, are closer to those of another “personal jeweler”, Ada Diamonds. In some cases, prices were reasonable, and in others, we found they were too high.
However, since you’ll engage in a more personalized buying process, you may be able to have Best Brilliance find a better and cheaper diamond than the generic ones they list on their site.
In fact, if you consider buying at Best Brilliance, we would highly recommend that you compare the diamonds they offer with similar diamonds at places such as Ritani or James Allen.
Overall, we rate the prices at Best Brilliance as being at the high end but encourage any buyers attracted by their personalized buying experience to compare prices with other sellers and negotiate the best possible diamond price.
Shipping and Returns
Shipping with Best Brilliance is entirely free and fully insured, as you would and should expect. They ship globally, which is a big plus and not something all other sellers do. And that’s free, too. Best Brilliance uses FedEx for shipping and returns.
Best Brilliance has a 30-day free return policy, which is very standard in the diamond industry. During seasonal sales, they’ll extend the return period much like Ritani and James Allen do.
Best Brilliance Review Verdict
Throughout our updated 2025 Best Brilliance review, we have found much to like about Best Brilliance – but also things we don’t care too much about. The positives include focus and dedicated information about lab-grown diamonds that is accurate and honest.
Best Brilliance also offers excellent customer service and support. In fact, that is probably their strongest point, as well as how they market themselves. That is, they are a white-glove concierge-like diamond jewelry business that helps consumers through all steps of the buying process.
That, however, is also our biggest negative with Best Brilliance. We recommend that consumers involve themselves in the buying process and have as much influence over it as possible. Buying diamond and diamond jewelry is complicated and often comes with a high sticker price.
There are aspects of the purchase that are a little opaque, and you don’t have the same opportunity to compare diamonds with a vast inventory or with other sellers, such as our favorite places to buy lab-grown diamonds.
We think Best Brilliance is a great place to shop for a lab-grown diamond engagement ring, and the shopping experience is somewhat similar to that of Ada Diamonds.
If you decide to buy through Best Brilliance, we recommend that you compare prices with the market-leading sellers of lab-grown diamonds.
3 Diamond Jewelers We Like Better Than Best Brilliance
Our Readers’ Best Brilliance Reviews
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