Our GemsNY review verdict
GemsNY is worth comparing when you have a particular diamond or gemstone in mind and want to build jewelry around it. We like its broad selection, useful diamond information and generally competitive pricing. It is not one of our first five recommendations, but a well-priced stone with the right report can still make it a good choice.
Our rating remains 4.0/5. The strongest reason to buy is the individual diamond and finished price, rather than a claim about wholesale savings.
Diamonds and jewelry
The appeal is choice: loose stones, settings and the ability to put them together. Buyers who enjoy comparing diamonds will get more from this approach than someone who wants a small, carefully chosen collection of finished jewelry.
Selection and prices
Our dated searches found an unusually large lab-diamond selection and prices that compared well with other online sellers. We still suggest starting your price comparison with Ritani, then checking the exact stones you like elsewhere.
Buying support and inspection
GemsNY now advertises virtual consultations as well as appointments in New York and New Jersey. That addresses our earlier concern that useful face-to-face help required a trip to Manhattan. Its FAQ explains the options.
Room for improvement
We would like the quality of the diamond images and access to the full report to be consistently easy. The current returns policy is clearer than the one we originally reviewed, but there are still restrictions on exchanges and ordering several similar pieces.
Who are GemsNY?
GemsNY is a diamond and gemstone jeweler with roots in New York's diamond district. Our review traced its business to 1998 and described the connection between its wholesale work and consumer website.
Its current contact page lists headquarters in Fort Lee, New Jersey, and a Manhattan office. Visits require an appointment. Confirm that the stone you want can be shown before arranging a trip.
Is GemsNY legitimate?
Yes. GemsNY is an established diamond and gemstone retailer with helpful staff and detailed diamond information. We would consider buying a suitable stone there, after comparing its complete price and return terms with our preferred jewelers.
GemsNY's mined and lab-grown diamonds
GemsNY sells both mined and lab-grown diamonds alongside colored gemstones.
What makes a lab-grown diamond different?
A lab-grown diamond is a real diamond, not cubic zirconia or moissanite. Its origin is different from a mined diamond; its individual cut, color and clarity still determine how it looks. Two stones with similar grades can look noticeably different.
Diamond education
Our review wanted more help explaining the lab-grown option. We still favor clear, practical information: how to read the report, judge the stone and avoid spending on grades you cannot appreciate. Broad environmental claims are less useful than evidence about a diamond's actual production.
GemsNY lab-grown diamond selection
In our inventory review, GemsNY listed more than 270,000 lab-grown diamonds, including around 70,000 round diamonds. Applying its Ideal cut filter left about 230,000 stones, including 56,000 rounds. These are historical search results, not today's stock counts.
The size of that search was a strength: you could narrow your choices quite substantially and still have alternatives. It did not establish that every listed diamond was equally good. For round stones, cut deserves close attention because it strongly affects sparkle. For fancy shapes, study the outline, proportions and video as well as the seller's cut label.
Lab-diamond jewelry selection
We particularly liked GemsNY's make-your-own approach. You choose the diamond and then pair it with a setting, giving you more control over what you pay for.
The website also includes dedicated lab-diamond jewelry categories. Preset jewelry can be a good buy when the diamond details, proportions and finished price suit you.
The GemsNY buying process
Our assessment found the website straightforward to navigate and generous with diamond information. We liked being able to move from a broad search to individual stones without leaving the online buying process.
Make your own diamond jewelry
A useful sequence is to choose a budget, shortlist a few diamonds, then compare the finished jewelry price. Leave room for the setting rather than spending the whole budget on the center stone.
Start with a diamond search
Choose the shape and an approximate carat range, then narrow color and clarity. Carat measures weight, not face-up size. Measurements and shape explain more about how large the diamond will look.
What does Ideal Plus mean?
Our review encountered GemsNY's Ideal Plus label. This was an additional seller classification, not a separate grade awarded by the diamond's independent laboratory. Use a retailer's selection label to help make a shortlist, then read the report and inspect the stone.
Narrow your choices
You do not need to inspect thousands of listings. Pick a manageable shortlist and compare report numbers, dimensions, videos and total prices. A higher clarity grade is not automatically worth paying for if both stones look clean to your eyes.
Ask for help choosing
Ask the adviser to explain why one diamond is preferable to another. Useful advice should refer to the stone's proportions, appearance or price, rather than simply recommending the more expensive option.
Meet a gemologist
GemsNY's New York and New Jersey appointments can help if you want to see a shortlist in person. Its FAQ says consultations are for purchases above $750, so check the arrangements before booking.
Remote support
We found the staff willing to guide us through the process and generally clear in their answers. Virtual appointments are now an option alongside phone, chat and email. Keep any important promises about the particular diamond, delivery or returns with your order details.
Inspecting a GemsNY diamond
The detailed diamond pages were a highlight of our review. They brought together a close-up video, diagrams, measurements and grading information. This made it easier to compare candidates than on sites that supplied only a generic product photograph.
Read the grading report
Check the laboratory report against the listing, including the report number and measurements. If the report marks an internal feature, look for it in the video. A feature visible under strong magnification may be invisible during normal wear.
Make sure you can read the full report
In our shopping research, the report opened in an awkwardly small window and an alternative viewing route requested contact details. We would have preferred a simpler way to open and read the full report.
Before paying, get a readable copy of the report for the exact stone. A laboratory's report-check service is also useful for confirming that the supplied details match its record.
Our shopping assessment
We liked the amount of information and the simple search process. We were less enthusiastic about some of the image and certificate presentation. Those details matter when you are choosing an expensive item without seeing it in person.
GemsNY lab-grown diamond prices
Competitive prices were a major positive in our review. Some stones came close to the prices we found at Ritani, while others did not offer the same value. That makes GemsNY a useful comparison, not an automatic cheapest-place recommendation.
Compare the actual diamond, not the advertised saving
Claims about wholesale prices or large percentage savings do not show whether your chosen stone is good value. Compare the final payable price for similar diamonds and settings. Where two sellers list the same report number, that can make the loose-stone comparison much more useful.
For today's broader price context, see our lab-grown diamond price guides. Their dated examples are more useful than treating our older inventory review as a current market average.
GemsNY shipping and returns
GemsNY advertises free insured US shipping; expedited services can cost extra. International charges and import costs vary. Arrange delivery where someone can sign for the parcel. See its shipping policy.
What changed in the return policy?
The review found individual diamond windows ranging from zero to 30 days. GemsNY's current FAQ instead says its standard 30-day policy covers both lab-grown and natural diamonds. That is an improvement.
Under its current return policy, items must arrive back unworn within 30 days of shipment. Standard Make Your Own items can qualify; bespoke pieces and personal engravings do not. One free US return label is offered per six months. Exchanges become final sale, and buying multiple pieces of the same jewelry type can leave only one returnable. Read those restrictions before ordering several options to compare.
GemsNY customer reviews
Our research found favorable customer feedback. The screenshots below record what we saw then; they are not current rating totals.
For a new purchase, look for recent accounts about similar jewelry and how the seller handled any problems. A rating average is less helpful than a clear description of the product, communication and resolution.
Our final GemsNY verdict
Its strengths: choice and pricing
GemsNY gives you a broad selection and plenty of control over the diamond you buy. We liked its search tools and helpful staff, and the right stone can offer good value.
Where we would still compare carefully
Clearer returns and virtual consultations address two earlier criticisms. We would still compare the image quality, report access and finished price with other sellers. We prefer the overall packages offered by our main recommendations.
Bottom line
At 4.0/5, GemsNY is a credible alternative when it has the specific diamond you want at a convincing price. Start with the jewelers we recommend most, then compare your shortlist with Ritani's diamonds. There is no need to choose a seller simply because its inventory is large.
How we reviewed GemsNY
Our review builds on Rolf Hartmann's original inventory searches, diamond-page inspection, price comparisons and support experience. We examined the search filters, videos, grading reports, jewelry-building process and return terms. The screenshots preserve those specific observations.
For the September 2026 update, we checked the published consultation, shipping and return information and compared it with our earlier conclusions. Older inventory figures and screenshots remain identified as historical research.
Selected updates
This review has been revised over time. Recent changes include:
- September 2026: Updated the virtual appointment options, New Jersey location and standard diamond return window; clarified exchange restrictions and price comparisons.
- 2024 review: Expanded the assessment of diamond choice, certificate access, pricing and jewelry-building tools.