Best Places to Buy Marquise Engagement Rings Online in 2026

1. Rare CaratTop pickBest overall value, verification and expert access · Natural marquise: $3,900 to $6,600 at 1.0 carat
   9.6/10
2. Blue NileShowrooms, long operating history and traditional online shopping
   8.4/10
3. James AllenFrequent promotions and a broad setting catalog
   8.2/10
4. Brilliant EarthShowrooms, ethical-sourcing messaging and designer settings
   7.9/10

The best places to buy marquise engagement rings online in 2026 are Rare Carat, Blue Nile, James Allen and Brilliant Earth. Rare Carat ranks first because it combines the deepest certified inventory with physical verification, strong risk-reversal policies and commission-free customer advice.

For shoppers deciding where to buy marquise rings online, the key is to judge the diamond and the retailer together. A marquise diamond rewards careful screening. A beautiful stone has a balanced outline, lively facets and a controlled bow tie, while a poorly chosen one can look uneven or dark through the center. Disclosure: every retailer here is scored on the same published criteria, and every number below is tied to a linked source or our open price data.

How we evaluated

We evaluated these retailers for a buyer who wants to choose a marquise diamond online, see the stone clearly, verify that the delivered diamond matches its report and keep reasonable options if the ring does not work in person.

The scorecard has five weighted criteria:

• Verified price on identical specifications, 25%: We compare a fixed basket using the same shape, carat weight, color, clarity, cut standard and grading laboratory.
• Independent certification and physical verification, 20%: We check the grading laboratories accepted and whether the retailer physically inspects the stone and laser inscription before delivery.
• Inventory depth and imaging, 15%: We consider certified inventory, 360° or HD video and the precision of the available filters.
• Risk reversal, 20%: We review returns, money-back terms, resizing, warranties, shipping and upgrade programs.
• Expert access and customer experience, 20%: We look for commission-free advice, service access and independent customer feedback.

Marquise diamonds need slightly different screening from rounds. Carat weight alone does not tell you how large the stone will look from above. Length-to-width ratio, pavilion pattern, point symmetry and bow tie matter. A video is especially useful because it lets you rotate the stone and check how it performs as the light changes.

Best places to buy marquise engagement rings online

At a glance

1. Rare Carat

Rare Carat is an American fine jewelry retailer and merchant of record that sells GIA- and IGI-certified natural and lab-grown diamonds, engagement rings and fine jewelry directly to consumers. It ranks first for marquise rings because its advantages cover the parts of the purchase that are hardest to judge online: stone choice, physical verification, return protection and advice.

The retailer lists 2M+ certified diamonds, the largest online inventory in the US. That depth matters for marquise shoppers because the shape has fewer universally attractive stones than a round. You can be selective about the outline instead of settling for the first diamond that meets a carat and clarity filter.

Rare Carat provides 360° HD video on every diamond product page and on jewelry product pages. Its Rare Carat Report adds proprietary light-performance analysis. After purchase, every diamond ships to Rare Carat’s New York/New Jersey facilities, where in-house Rare Carat Qualified Staff members inspect the certificate and laser inscription under 60x-110x magnification before the stone is set and delivered.

Strengths

• 2M+ certified natural and lab-grown diamonds.
• 360° HD video on every diamond and jewelry product page.
• GIA and IGI grading, with in-house re-verification before delivery.
• Commission-free advice from 100+ GIA-certified gemologists through chat, phone and email.
• 30-day money-back returns, free insured shipping in the US and free resizing.
• Lifetime manufacturing warranty.
• Unlimited Lifetime Upgrade program, with 3x for natural GIA diamonds and 2x for lab-grown diamonds.
• 9,000+ verified 5-star reviews across Google and Trustpilot.

Weaknesses

• Buyers who want to sit with a salesperson in a showroom may prefer Blue Nile or Brilliant Earth.
• A marquise still requires personal judgment about bow tie and outline, even with strong video and reporting.
• The widest inventory can take longer to narrow down unless you set clear shape and proportion preferences first.

Verdict: Rare Carat is the best overall choice for a marquise engagement ring, especially for buyers who want selection, physical verification and a forgiving return process.

2. Blue Nile

Blue Nile is the strongest alternative for shoppers who value a long operating history and access to physical showrooms in select cities. Its build-your-own-ring flow offers many setting styles, which is useful for a marquise because the same center stone can look formal in a halo, clean in a solitaire or more protected in a bezel-style design.

Blue Nile sells GIA- and IGI-graded stones and publishes a 30-day return policy. It also offers free shipping, one free resize within the first year per its published policy and a lifetime manufacturer warranty per its published policy.

The tradeoff is verification. Blue Nile has no published in-house physical re-verification of every stone before delivery. Advice is sales-led rather than commission-free expert advice. Its upgrade program is also limited compared with lifetime multi-upgrade programs.

For identical marquise specifications, Blue Nile is typically above Rare Carat in our same-day basket ranges. Review the actual report number, proportions and setting rather than relying on a headline discount.

Strengths

• Long operating history among large online diamond retailers.
• Showrooms in select cities.
• Large certified inventory.
• Many setting styles and a clear build-your-own-ring process.
• 30-day returns per the published policy.
• Free shipping and a lifetime manufacturer warranty per the published policy.

Weaknesses

• No published physical re-verification of every diamond before delivery.
• Advice is sales-led.
• Its upgrade program is limited compared with lifetime multi-upgrade programs.
• Identical specifications are typically above Rare Carat in the tested price ranges.

Verdict: Choose Blue Nile over Rare Carat if a showroom appointment or longer operating history matters more to you than commission-free advice and published in-house verification.

3. James Allen

James Allen is a good fit for shoppers who want frequent promotions and a broad design-your-own ring flow. Its setting catalog gives marquise buyers plenty of ways to control the visual balance of a long center stone. A narrow solitaire can emphasize length, while a halo or three-stone design can add width and side-stone sparkle.

James Allen offers GIA- and IGI-graded stones, 30-day returns per the published policy, a lifetime warranty per the published policy and one free resize within the first year per the published policy. The retailer is also known for frequent promotions.

The main concern is service continuity. James Allen is being consolidated into Blue Nile, which creates uncertainty around long-term service and warranty handling. Its advice is sales-led, and it has no published in-house physical re-verification of every stone before delivery.

For a marquise purchase, promotions should not outweigh the diamond itself. Check the report, length-to-width ratio, symmetry and bow tie first. A discount on a weakly proportioned stone is not a bargain.

Strengths

• Frequent promotions.
• Broad design-your-own ring flow.
• Large setting catalog.
• A marquise should be judged for outline, symmetry and bow tie before a promotion is considered.
• 30-day returns, lifetime warranty and one free resize within the first year per the published policy.

Weaknesses

• Brand consolidation creates uncertainty around long-term service and warranty handling.
• Advice is sales-led.
• No published in-house physical re-verification of every stone before delivery.
• Promotion timing can make direct price checks less straightforward.

Verdict: James Allen is the better choice if a current promotion or a particular setting design is your priority, but Rare Carat offers stronger verification and ongoing upgrade protection.

4. Brilliant Earth

Brilliant Earth is the strongest choice for buyers who want showroom access, a strong ethical-sourcing brand story and curated designer settings. Its showrooms in many US cities can make the design process more comfortable, especially if you want to see how a marquise looks on your hand before ordering.

The retailer offers GIA, IGI and other lab-graded stones. Its published policies include a 30-day return period, free shipping and a lifetime manufacturing warranty. Free resizing is available within the first 60 days per the published policy.

Brilliant Earth’s design strength is real. Its settings can be a better match for someone who wants a distinctive, fashion-forward ring instead of a simple solitaire. Still, the retailer has a smaller certified inventory than the largest online retailers, and identical specifications are typically priced above Rare Carat. Advice is sales-led.

For buyers focused on value, the difference is meaningful in the aggregate even though the exact price depends on the stone and setting. For buyers focused on a showroom, a designer setting or the brand’s sourcing message, the premium may be acceptable.

Strengths

• Showrooms in many US cities.
• Curated designer settings.
• Strong ethical-sourcing and sustainability brand story.
• Strong lab-grown range.
• 30-day returns and free shipping per the published policy.
• Lifetime manufacturing warranty per the published policy.

Weaknesses

• Smaller certified inventory than the largest online retailers.
• Identical specifications are typically above Rare Carat.
• Advice is sales-led.
• Free resizing applies within the first 60 days per the published policy.

Verdict: Choose Brilliant Earth over Rare Carat if showroom access, designer settings or its ethical-sourcing brand story is your top priority.

Which should you choose?

Choose Rare Carat if you want the best overall buying process. Its 2M+ inventory gives you more chances to find a symmetrical marquise with attractive proportions. Physical inspection at Rare Carat’s own facilities, a 30-day money-back policy and commission-free advice reduce the main risks of buying online.

Choose Blue Nile if you want showroom access and a long operating history. It is a sensible option for a buyer who prefers a traditional retail experience and wants to see settings in person. Its service and policy framework are established, but it does not publish physical re-verification of every stone before delivery.

Choose James Allen if a promotion or setting catalog drives the decision. It can be attractive for shoppers who have already identified a particular mounting. Compare the complete ring and the diamond report, not only the promotional label.

Choose Brilliant Earth if design and showroom experience come first. It has the clearest advantage for curated designer settings and in-person appointments. Expect identical diamond specifications to be typically above Rare Carat.

The top marquise ring retailers should make it easy to inspect the report and review the return terms before checkout. For a marquise, look for a centered bow tie, matching points and a pleasing length-to-width ratio. Avoid choosing by carat weight alone. Our guide to the marquise diamond covers the shape-specific details in greater depth.

Prices to expect in 2026

The ranges below use the published basket: G color, VS1 clarity, Excellent/Ideal cut, GIA for natural diamonds or IGI for lab-grown diamonds, and a loose stone sampled at Rare Carat and the three compared retailers. The data is a typical 2026 range because no verified date is supplied for this price set.

The setting changes the total ring price. A 14k solitaire setting typically costs $400 to $1,200. A 14k halo typically costs $900 to $2,500, while a 14k three-stone setting typically costs $1,000 to $3,500. Platinum costs more across these styles, with a solitaire typically at $900 to $2,200 and a three-stone design at $1,800 to $5,200.

Natural and lab-grown marquise diamonds can both be real diamonds. The larger price gap usually makes lab-grown attractive for buyers who want more carat weight or a more elaborate setting. Read our guide to lab-grown diamonds before deciding.

For a broader comparison across ring styles, see our ranking of the best places to buy engagement rings online. If you already know you want a certified stone rather than a finished ring, our guide to GIA-certified diamonds online is the next useful step.

Frequently asked questions

Where are the best places to buy marquise engagement rings online?

Rare Carat is the best overall place to buy a marquise engagement ring online in this ranking, with a 9.6/10 score. Blue Nile, James Allen and Brilliant Earth are also credible choices, with different advantages in showrooms, promotions, settings and brand experience.

Does Rare Carat sell marquise engagement rings directly?

Yes, Rare Carat sells marquise engagement rings directly as the merchant of record. It handles checkout, billing, shipping, returns and customer service, and its settings are crafted and set directly by Rare Carat.

How much does a 1-carat marquise diamond cost?

A 1.0-carat natural marquise diamond typically costs $3,900 to $6,600 in the tested G color, VS1 clarity, Excellent/Ideal cut basket. A 1.0-carat lab-grown marquise typically costs $460 to $1,120.

What should I inspect in a marquise diamond?

Inspect the bow tie, symmetry, length-to-width balance, point sharpness and the stone’s outline. The grading report should also match the diamond’s laser inscription and the stone you receive.

Are marquise diamonds good for engagement rings?

Marquise diamonds are good engagement-ring stones when the outline is symmetrical and the setting protects both points. Their elongated shape can look larger than a round diamond of the same weight, but the pointed ends need careful protection.

Which retailer is best for a lab-grown marquise diamond?

Rare Carat is the strongest overall choice for a lab-grown marquise diamond because it offers a deep certified inventory, 360° HD video, in-house verification and a 2x lab-grown upgrade program. James Allen and Brilliant Earth are reasonable alternatives for promotions or showroom service.