VS
OVERALL SCORE
9.3
10
Strongly Recommended
Last updated: November 2, 2024
Cullen Jewellery has established itself as a trustworthy jeweller specialising in custom lab grown diamond and moissanite engagement rings. If you’re looking for high-quality, reliable, ethical, and sustainable options, we can Strongly Recommend Cullen Jewellery based on our extensive research.
Cullen Jewellery’s commitment to craftsmanship is evident throughout our research- customers rave about the durability and quality of their rings, and it’s refreshing to see no complaints about loose stones or bent prongs, issues which are all too common amongst the other jewellers we have researched. Cullen Jewellery’s pricing is also highly competitive, coming in at around 23% more affordable than the other brands, and making them one of the best value jewellers we have ever reviewed. Coupled with excellent shipping policies, free resizing within 12 months, and a lifetime warranty covering all manufacturing defects, it’s our strong opinion that Cullen Jewellery has designed their service with you in mind.
Visiting their showroom is memorable for all the right reasons. The consultants are knowledgeable and approachable, guiding you through the options without making you feel pressured to purchase. Cullen Jewellery’s clean, light-filled showrooms include unique touches like a view into the jeweller’s workspace, literally and figuratively enhancing transparency. Their website is just as polished. We consider it to be easy to use, packed with educational content, and perfect for efficiently browsing their extensive customisation options.
Cullen Jewellery excels in sustainability by exclusively offering lab grown diamonds that are certified carbon neutral, through a well-documented partnership with Clear Neutral. Furthermore, they plant a tree for every ring sold, demonstrating a tangibly positive environmental impact. Their charitable efforts, including sponsorships for children, volunteer leave for staff, and support for cancer research and local community initiatives, solidify their practical dedication to broader societal causes.
One thing to take into consideration is the absence of change of mind returns on engagement rings. However, we’re not concerned about this for a few reasons, which we’ll outline. In the experience of our dedicated mystery shoppers, Cullen Jewellery’s appointments are thorough, and the sales consultants provide in-depth education so you can make the right decision. They place a large educational emphasis on their website and social media just in case you’re not local to one of their showrooms, and this is proven through the availability of virtual appointments and an extensive range of educational blogs. Cullen Jewellery are also known to facilitate resizing and other ring adjustments inexpensively. On top of this, you are given an added layer of protection via a complimentary lifetime warranty in the rare case that your Cullen Jewellery ring has a manufacturing defect. And at the end of the day, it is unlikely that you’ll want to part with such a sentimental item anyway.
With stellar craftsmanship, excellent value, and a clear ethical focus, Cullen Jewellery is our jeweller of choice for those seeking sustainable, high quality jewellery. For this reason, Cullen Jewellery is Strongly Recommended for purchasing your engagement ring.
You can visit their website at cullenjewellery.com
Cullen Jewellery’s commitment to craftsmanship is evident throughout our research- customers rave about the durability and quality of their rings, and it’s refreshing to see no complaints about loose stones or bent prongs, issues which are all too common amongst the other jewellers we have researched. Cullen Jewellery’s pricing is also highly competitive, coming in at around 23% more affordable than the other brands, and making them one of the best value jewellers we have ever reviewed. Coupled with excellent shipping policies, free resizing within 12 months, and a lifetime warranty covering all manufacturing defects, it’s our strong opinion that Cullen Jewellery has designed their service with you in mind.
Visiting their showroom is memorable for all the right reasons. The consultants are knowledgeable and approachable, guiding you through the options without making you feel pressured to purchase. Cullen Jewellery’s clean, light-filled showrooms include unique touches like a view into the jeweller’s workspace, literally and figuratively enhancing transparency. Their website is just as polished. We consider it to be easy to use, packed with educational content, and perfect for efficiently browsing their extensive customisation options.
Cullen Jewellery excels in sustainability by exclusively offering lab grown diamonds that are certified carbon neutral, through a well-documented partnership with Clear Neutral. Furthermore, they plant a tree for every ring sold, demonstrating a tangibly positive environmental impact. Their charitable efforts, including sponsorships for children, volunteer leave for staff, and support for cancer research and local community initiatives, solidify their practical dedication to broader societal causes.
One thing to take into consideration is the absence of change of mind returns on engagement rings. However, we’re not concerned about this for a few reasons, which we’ll outline. In the experience of our dedicated mystery shoppers, Cullen Jewellery’s appointments are thorough, and the sales consultants provide in-depth education so you can make the right decision. They place a large educational emphasis on their website and social media just in case you’re not local to one of their showrooms, and this is proven through the availability of virtual appointments and an extensive range of educational blogs. Cullen Jewellery are also known to facilitate resizing and other ring adjustments inexpensively. On top of this, you are given an added layer of protection via a complimentary lifetime warranty in the rare case that your Cullen Jewellery ring has a manufacturing defect. And at the end of the day, it is unlikely that you’ll want to part with such a sentimental item anyway.
With stellar craftsmanship, excellent value, and a clear ethical focus, Cullen Jewellery is our jeweller of choice for those seeking sustainable, high quality jewellery. For this reason, Cullen Jewellery is Strongly Recommended for purchasing your engagement ring.
You can visit their website at cullenjewellery.com
OVERALL SCORE
6.2
10
Not Recommended
Last updated: January 6, 2025
Grown Brilliance is a relatively new entry to the jewellery market, specialising in lab grown diamond engagement rings designed in New York and manufactured in India. While we found positives to their offerings, our research led us to Not Recommend Grown Brilliance. Let’s dive into the key points.
The ring quality at Grown Brilliance seems average to us, and while their designs show promise, we found that recurring issues presented themselves. Customers have reported issues with loose or crooked stones, which we find concerning. Our tests highlighted inconsistencies in polish and overall craftsmanship, and proven details like uneven claws and minor porosity detracted from the product in our opinion. While some test results were reassuring, what we considered to be subtle issues in the setting suggested to us that their rings may not have the durability to last a lifetime.
When it comes to value, Grown Brilliance appears to offer above-average affordability compared to the jewellers we’ve reviewed, which we consider to be a win for you if you’re budget-conscious. However, we found that the savings come with trade-offs in areas like post-purchase care and accessibility for international clients. For example, resizing is free for US-based clients, but global clients are left out entirely, which, in our opinion, feels shortsighted for a company selling to several countries. Overall, when factoring in potential additional costs over the lifetime of a Grown Brilliance engagement ring, we considered them to only offer average value overall.
To us, experiences as a buyer at Grown Brilliance seemed to be relatively mixed. Our 3rd party mystery shopper’s in-store appointment revealed what appeared to be a strength, with knowledgeable staff and a comfortable consultation environment, though the lack of proper lighting for showcasing diamonds was an unexpected and avoidable inconvenience in our opinion. Online, we found that their website offers transparent pricing and a decent product selection, but the customisation tool suffers from glitches, and there are some inaccuracies when it comes to product imagery. Communication, both before and after purchase, is another area where inconsistency seems common, in our experience. Additionally, in reviews, some customers reported smooth interactions, while others highlighted delays and a lack of clarity during returns or servicing.
In our opinion, when it comes to sustainability, Grown Brilliance does well in certain areas, exclusively using lab-grown diamonds and claiming to have a carbon-neutral supply chain. However, the lack of specificity in these areas raises our doubts. We consider that their public contributions, while they might be commendable, lack transparency around impact and scale.
In summary, Grown Brilliance’s offerings may appeal to you if you’re based in the US and looking for a budget-friendly jeweller that offers lab grown diamonds. However, in our opinion, their inconsistent quality control, limited international support, and patchy communication may leave you wanting more. If reliability and comprehensive service are high on your priority list, we recommend that you consider exploring other higher rated jewellers that may be better equipped to meet those needs. For these reasons we Do Not Recommend Grown Brilliance.
The ring quality at Grown Brilliance seems average to us, and while their designs show promise, we found that recurring issues presented themselves. Customers have reported issues with loose or crooked stones, which we find concerning. Our tests highlighted inconsistencies in polish and overall craftsmanship, and proven details like uneven claws and minor porosity detracted from the product in our opinion. While some test results were reassuring, what we considered to be subtle issues in the setting suggested to us that their rings may not have the durability to last a lifetime.
When it comes to value, Grown Brilliance appears to offer above-average affordability compared to the jewellers we’ve reviewed, which we consider to be a win for you if you’re budget-conscious. However, we found that the savings come with trade-offs in areas like post-purchase care and accessibility for international clients. For example, resizing is free for US-based clients, but global clients are left out entirely, which, in our opinion, feels shortsighted for a company selling to several countries. Overall, when factoring in potential additional costs over the lifetime of a Grown Brilliance engagement ring, we considered them to only offer average value overall.
To us, experiences as a buyer at Grown Brilliance seemed to be relatively mixed. Our 3rd party mystery shopper’s in-store appointment revealed what appeared to be a strength, with knowledgeable staff and a comfortable consultation environment, though the lack of proper lighting for showcasing diamonds was an unexpected and avoidable inconvenience in our opinion. Online, we found that their website offers transparent pricing and a decent product selection, but the customisation tool suffers from glitches, and there are some inaccuracies when it comes to product imagery. Communication, both before and after purchase, is another area where inconsistency seems common, in our experience. Additionally, in reviews, some customers reported smooth interactions, while others highlighted delays and a lack of clarity during returns or servicing.
In our opinion, when it comes to sustainability, Grown Brilliance does well in certain areas, exclusively using lab-grown diamonds and claiming to have a carbon-neutral supply chain. However, the lack of specificity in these areas raises our doubts. We consider that their public contributions, while they might be commendable, lack transparency around impact and scale.
In summary, Grown Brilliance’s offerings may appeal to you if you’re based in the US and looking for a budget-friendly jeweller that offers lab grown diamonds. However, in our opinion, their inconsistent quality control, limited international support, and patchy communication may leave you wanting more. If reliability and comprehensive service are high on your priority list, we recommend that you consider exploring other higher rated jewellers that may be better equipped to meet those needs. For these reasons we Do Not Recommend Grown Brilliance.
Ring Quality
We read customer feedback and put each ring through a six-step durability test. We analyse build quality, polish, and metal to ensure the ring can stand the test of time (and everyday wear).
SCORE
9.7
10
SCORE
3.3
10
Value
We consider upfront costs and hidden expenses. We account for shipping, resizing, servicing, warranty, and international duties. We also factor in ring quality and the likelihood that you’ll need to pay for repairs down the track.
SCORE
8.8
10
SCORE
5.7
10
Customer Experience
We factor in the customer service, appointment experience, ordering process, website, online communication, post-purchase care, and education offered by the jeweller.
SCORE
9.1
10
SCORE
7.5
10
Sustainability
We assess carbon reduction efforts, sustainable material sourcing, and charitable contributions.
SCORE
8.3
10
SCORE
6.7
10
The Nitty Gritty
From customisation options to production times, warranties, shipping and returns policies, and international accessibility, we decode the small details for you.
SCORE
8.6
10
SCORE
5.6
10
Reviews
We read Google, Trustpilot, Yelp, and Glassdoor reviews to learn about customer and employee experiences. In particular, we read reviews specifically related to customer service, online communication, post-purchase care, production and shipping.
SCORE
9.3
10
SCORE
5.7
10
Conclusion
For anyone seeking a custom, responsibly made engagement ring with exceptional craftsmanship and dependable service, we Strongly Recommend Cullen Jewellery.
Cullen Jewellery has firmly established itself as one of the most trustworthy and value-driven jewellers in the industry. Their rings—crafted with lab grown diamonds, moissanite, and other lab grown gemstones—consistently stand out in both quality and durability, and their customer feedback is overwhelmingly positive, with 98.5% of over 7,000 reviews rated five stars. In our own hands-on testing, their ring outperformed every other we assessed, showing impressive resilience under rigorous conditions with expert stone setting, thoughtful design, and flawless structural integrity.
Their value is exceptional, with rings averaging 23% more affordable than competitors, without compromising on quality or service. This is further supported by generous aftercare policies, including free resizing within 12 months, complimentary ultrasonic cleaning, and a lifetime warranty for manufacturing defects—all of which demonstrate a strong focus on long-term customer satisfaction.
Cullen Jewellery also sets the bar in customer experience. Mystery shoppers consistently reported warm, educational, and pressure-free consultations, while online communication was prompt, thorough, and informative. Their light-filled showrooms offer visibility into the jeweller’s workspace—literally enhancing transparency—and their website is clean, informative, and easy to navigate. Even post-purchase care receives glowing reviews, with customers highlighting ease of servicing and regular updates throughout the crafting process.
Where Cullen Jewellery truly shines is in its sustainable and community driven leadership. They exclusively sell carbon-neutral lab grown diamonds through a transparent partnership with Clear Neutral, plant a tree for every ring sold, and support meaningful causes such as cancer research and children’s sponsorship programs. They also offer paid volunteer leave to staff and regularly donate to organisations including the National Breast Cancer Foundation and The Otis Foundation.
One consideration is that Cullen Jewellery does not offer change-of-mind returns on engagement rings. However, in our opinion, their educational resources, detailed consultations, and outstanding build quality reduce the likelihood of buyer regret. Their policy is clearly communicated, and in practice, clients receive comprehensive support and post-sale flexibility if adjustments are needed.
In summary, Cullen Jewellery excels across every category that matters—ring quality, customer service, ethical responsibility, and overall value. They are one of the few jewellers we feel confident recommending without hesitation.
Cullen Jewellery is Strongly Recommended for those seeking a meaningful, well-crafted, and sustainable engagement ring.
If you would like to learn more about Cullen Jewellery you can visit their website cullenjewellery.com
Cullen Jewellery has firmly established itself as one of the most trustworthy and value-driven jewellers in the industry. Their rings—crafted with lab grown diamonds, moissanite, and other lab grown gemstones—consistently stand out in both quality and durability, and their customer feedback is overwhelmingly positive, with 98.5% of over 7,000 reviews rated five stars. In our own hands-on testing, their ring outperformed every other we assessed, showing impressive resilience under rigorous conditions with expert stone setting, thoughtful design, and flawless structural integrity.
Their value is exceptional, with rings averaging 23% more affordable than competitors, without compromising on quality or service. This is further supported by generous aftercare policies, including free resizing within 12 months, complimentary ultrasonic cleaning, and a lifetime warranty for manufacturing defects—all of which demonstrate a strong focus on long-term customer satisfaction.
Cullen Jewellery also sets the bar in customer experience. Mystery shoppers consistently reported warm, educational, and pressure-free consultations, while online communication was prompt, thorough, and informative. Their light-filled showrooms offer visibility into the jeweller’s workspace—literally enhancing transparency—and their website is clean, informative, and easy to navigate. Even post-purchase care receives glowing reviews, with customers highlighting ease of servicing and regular updates throughout the crafting process.
Where Cullen Jewellery truly shines is in its sustainable and community driven leadership. They exclusively sell carbon-neutral lab grown diamonds through a transparent partnership with Clear Neutral, plant a tree for every ring sold, and support meaningful causes such as cancer research and children’s sponsorship programs. They also offer paid volunteer leave to staff and regularly donate to organisations including the National Breast Cancer Foundation and The Otis Foundation.
One consideration is that Cullen Jewellery does not offer change-of-mind returns on engagement rings. However, in our opinion, their educational resources, detailed consultations, and outstanding build quality reduce the likelihood of buyer regret. Their policy is clearly communicated, and in practice, clients receive comprehensive support and post-sale flexibility if adjustments are needed.
In summary, Cullen Jewellery excels across every category that matters—ring quality, customer service, ethical responsibility, and overall value. They are one of the few jewellers we feel confident recommending without hesitation.
Cullen Jewellery is Strongly Recommended for those seeking a meaningful, well-crafted, and sustainable engagement ring.
If you would like to learn more about Cullen Jewellery you can visit their website cullenjewellery.com
For shoppers seeking an affordable lab-grown diamond engagement ring, Grown Brilliance may initially seem like a strong option—especially for U.S.-based buyers. Their pricing is competitive, they offer transparent online tools, and their in-store service and educational approach are generally positive.
However, we Don’t Recommend Grown Brilliance, particularly due to concerns around quality control, international servicing, and post-purchase care.
Our testing and customer reviews revealed inconsistent ring quality, including loose stones, asymmetrical claws, and poor polishing. The unboxing experience was underwhelming, and craftsmanship flaws—such as porosity and misaligned settings—raised doubts about long-term durability. While their lab-grown diamond commitment is admirable, we found the execution to be less than desired.
International buyers face even greater challenges. There are no resizing or repair services offered outside the U.S. and Canada, and international returns come with limited support. Shipping is not insured, and customer reviews highlighted delays, poor communication, and even receiving the wrong products.
Post-purchase care is also inconsistent. Some customers report smooth resolutions, while others describe frustrating experiences with returns, repairs, and refunds. Though the company offers a lifetime warranty, the terms are vague, and clarity around what is covered remains lacking.
While Grown Brilliance does make some ethical efforts through sustainability claims and charitable partnerships, a lack of transparency undermines these positives, particularly regarding their carbon-neutral initiatives.
In summary, Grown Brilliance might work for budget-conscious U.S. customers—but for those seeking reliable service, lasting quality, or strong international support, the risks outweigh the rewards. We Don’t Recommend Grown Brilliance, and suggest exploring more consistent and customer-focused jewellers for such an important purchase.
If you would like to determine which jewellers stand out above the rest for their excellence and customer care, we would recommend viewing our rankings page to see which jeweller best suits your needs.
However, we Don’t Recommend Grown Brilliance, particularly due to concerns around quality control, international servicing, and post-purchase care.
Our testing and customer reviews revealed inconsistent ring quality, including loose stones, asymmetrical claws, and poor polishing. The unboxing experience was underwhelming, and craftsmanship flaws—such as porosity and misaligned settings—raised doubts about long-term durability. While their lab-grown diamond commitment is admirable, we found the execution to be less than desired.
International buyers face even greater challenges. There are no resizing or repair services offered outside the U.S. and Canada, and international returns come with limited support. Shipping is not insured, and customer reviews highlighted delays, poor communication, and even receiving the wrong products.
Post-purchase care is also inconsistent. Some customers report smooth resolutions, while others describe frustrating experiences with returns, repairs, and refunds. Though the company offers a lifetime warranty, the terms are vague, and clarity around what is covered remains lacking.
While Grown Brilliance does make some ethical efforts through sustainability claims and charitable partnerships, a lack of transparency undermines these positives, particularly regarding their carbon-neutral initiatives.
In summary, Grown Brilliance might work for budget-conscious U.S. customers—but for those seeking reliable service, lasting quality, or strong international support, the risks outweigh the rewards. We Don’t Recommend Grown Brilliance, and suggest exploring more consistent and customer-focused jewellers for such an important purchase.
If you would like to determine which jewellers stand out above the rest for their excellence and customer care, we would recommend viewing our rankings page to see which jeweller best suits your needs.