2.9 Carat Marquise Lab Grown Diamond Prices Comparison
As of May 2026, 2.9 carat marquise lab grown diamonds usually range from $426 to $10,532, with an average price of $2,180.In the last month, prices for these diamonds are down 6.8%.Compare 134 verified listings across 9 retailers tracked by CaratRadar.
2.9 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 134 verified 2.9-carat marquise lab grown diamonds listed across 9 online retailers. Prices in this segment range from $426 to $10,532, with an average asking price of $2,180 and a median of $1,561.
The price spread of $10,106 (96.0% from highest to lowest) highlights why comparing identical certified diamonds across multiple retailers matters. Two identical certified diamonds can differ by hundreds or even thousands of dollars depending on the retailer.
These figures are based on our latest daily market data, matched by certification lab and certificate number across retailers, so you are comparing the exact same diamond.
134 diamonds tracked in this segment
Price range: $426 to $10,532
Average price: $2,180
Median price: $1,561
Available across 9 retailers
Savings potential: up to 96.0%
Price Range Overview
As of May 30, 2026Real market range for this carat, shape, and diamond type.
134
$426
$2,180
$1,561
$10,532
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
IGI | 2.94ct | Marquise | G | VS1 | Ideal
From $449
Compare at $650
Save 70.8%IGI | 2.99ct | Marquise | G | VVS2 | Excellent
From $482
Compare at $1,648
Save 70.3%IGI | 2.98ct | Marquise | G | VVS2 | Excellent
From $487
Compare at $1,639
Save 70.3%IGI | 2.98ct | Marquise | G | VVS2 | Excellent
From $487
Compare at $1,639
IGI | 2.99ct | Marquise | G | VVS2 | Excellent
From $489
Compare at $620
Save 76.9%IGI | 2.91ct | Marquise | F | VS1 | Excellent
From $529
Compare at $2,295
Save 77%IGI | 2.92ct | Marquise | F | VS1 | Excellent
From $531
Compare at $2,305
Save 77%IGI | 2.94ct | Marquise | F | VS1 | Excellent
From $534
Compare at $2,320
Save 76.7%IGI | 2.9ct | Marquise | E | VS1 | Excellent
From $560
Compare at $2,405
Save 76.7%IGI | 2.91ct | Marquise | E | VS1 | Excellent
From $562
Compare at $2,415
Save 77.4%IGI | 2.92ct | Marquise | E | VS1 | Ideal
From $567
Compare at $2,510
Save 79.6%IGI | 2.97ct | Marquise | G | VVS1 | Very Good
From $578
Compare at $2,840
Save 73.5%IGI | 2.99ct | Marquise | F | VS1 | Excellent
From $601
Compare at $2,270
Save 64%IGI | 2.98ct | Marquise | F | VS1 | Excellent
From $606
Compare at $1,682
Save 79.5%IGI | 2.9ct | Marquise | G | VS1 | Excellent
From $608
Compare at $2,960
Save 56.4%IGI | 2.99ct | Marquise | G | VS2 | Very Good
From $616
Compare at $1,414
Save 79.5%IGI | 2.96ct | Marquise | G | VS1 | Excellent
From $620
Compare at $3,020
IGI | 2.97ct | Marquise | G | VVS2 | Excellent
From $625
Compare at $1,629
Save 56%IGI | 2.97ct | Marquise | G | VS1 | Very Good
From $625
Compare at $1,422
Save 70.8%IGI | 2.91ct | Marquise | F | VS1 | Very Good
From $646
Compare at $2,210
Save 73.9%IGI | 2.9ct | Marquise | E | VS1 | Ideal
From $650
Compare at $2,490
Save 73%IGI | 2.9ct | Marquise | E | VS1 | Excellent
From $650
Compare at $2,405
Save 79.4%IGI | 2.9ct | Marquise | F | VS2 | Excellent
From $652
Compare at $3,160
IGI | 2.92ct | Marquise | F | VS1 | Excellent
From $656
Compare at $878
Save 71.5%IGI | 2.9ct | Marquise | E | VS2 | Very Good
From $669
Compare at $2,345
Save 69.6%IGI | 2.91ct | Marquise | F | VS1 | Excellent
From $671
Compare at $2,210
Save 71.6%IGI | 2.92ct | Marquise | E | VS2 | Excellent
From $672
Compare at $2,365
Save 69.6%IGI | 2.92ct | Marquise | F | VS1 | Excellent
From $673
Compare at $2,215
Save 70.8%IGI | 2.94ct | Marquise | F | VS1 | Ideal
From $677
Compare at $2,320
Save 69.7%IGI | 2.96ct | Marquise | F | VS1 | Excellent
From $680
Compare at $2,245
Save 69.3%IGI | 2.96ct | Marquise | F | VS1 | Ideal
From $689
Compare at $2,245
Save 70.4%IGI | 2.96ct | Marquise | F | VS1 | Ideal
From $690
Compare at $2,335
Save 62.2%IGI | 2.94ct | Marquise | E | VVS2 | Very Good
From $710
Compare at $1,876
Save 62%IGI | 2.94ct | Marquise | E | VVS2 | Very Good
From $718
Compare at $1,888
Save 59.8%IGI | 2.99ct | Marquise | E | VS1 | Very Good
From $718
Compare at $1,787
Save 58.2%IGI | 2.9ct | Marquise | F | VVS2 | Excellent
From $727
Compare at $1,738
Save 58.6%IGI | 2.93ct | Marquise | F | VVS2 | Excellent
From $734
Compare at $1,773
Save 79.3%IGI | 2.98ct | Marquise | F | VS2 | Very Good
From $741
Compare at $3,580
Save 67.7%IGI | 2.98ct | Marquise | E | VS2 | Excellent
From $749
Compare at $2,320
Save 66.9%IGI | 2.99ct | Marquise | F | VS1 | Excellent
From $752
Compare at $2,270
Save 48.2%IGI | 2.99ct | Marquise | E | VS1 | Ideal
From $759
Compare at $1,466
Save 66.5%IGI | 2.99ct | Marquise | F | VS1 | Ideal
From $760
Compare at $2,270
Save 72.4%IGI | 2.99ct | Marquise | FANCY | VS1 | Very Good
From $761
Compare at $2,756
Save 69.1%IGI | 2.97ct | Marquise | E | VS1 | Excellent
From $761
Compare at $2,465
Save 58.8%IGI | 2.9ct | Marquise | E | VVS2 | Ideal
From $765
Compare at $1,859
Save 59%IGI | 2.91ct | Marquise | E | VVS2 | Ideal
From $768
Compare at $1,872
Save 68.8%IGI | 2.97ct | Marquise | E | VS1 | Excellent
From $769
Compare at $2,465
Save 59.1%IGI | 2.92ct | Marquise | E | VVS2 | Ideal
From $771
Compare at $1,884
Save 68.7%IGI | 2.98ct | Marquise | E | VS1 | Ideal
From $772
Compare at $2,470
Save 69.8%IGI | 2.98ct | Marquise | E | VS1 | Excellent
From $772
Compare at $2,560
Entry pricing in this category starts around $426.
What to Know When Shopping for 2.9 Carat Marquise Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $10,106 or more.
- Focus on the 4Cs that matter most to you. Color and clarity grades drive price more than cut in many segments, but cut affects sparkle the most.
- The median price of $1,561 is a useful benchmark. If you see a deal significantly below this, verify the retailer's reputation and return policy.
- Consider eye-clean alternatives. Moving one clarity grade down (e.g., VS2 to SI1) can save 10-15% with no visible difference to the naked eye.
- Lab-grown diamonds offer excellent value. Ensure the stone comes with a GIA or IGI certificate confirming it is laboratory-grown.
- Check shipping, insurance, and return policies. The lowest sticker price is not always the best deal once you factor in total cost of purchase.
- Marquise diamonds maximize carat weight face-up and appear larger than their actual weight. Check symmetry carefully.
Frequently Asked Questions
We currently track 134 comparable stones in this segment. Prices start around $426 and go up to $10,532.
Based on the latest market data, the average asking price is about $2,180 with a median around $1,561.
The observed spread is roughly $10,106 across tracked listings, which is about 96.0% from highest to lowest offer in this bucket.
We refresh pricing data daily so these pages stay current with market changes.
Based on completed market data, the fair market benchmark is $2,180. The median price is $1,561, so offers between the median and fair benchmark can be reasonable, while reputable listings below the median may be especially competitive.
We currently track this stone category across 9 online retailers, giving you a broad view of the competitive landscape.
For most buyers, color differences below G are hard to detect once set in a ring. Clarity grades of VS2 and above are typically eye-clean. Prioritize cut quality for maximum brilliance, then balance color and clarity based on your budget.
Retailer pricing strategies, overhead costs, and margin targets all contribute. The exact certified diamond can differ by $10,106 across sellers, which is why direct certified-diamond comparison is essential.
We match diamonds across retailers by their certification lab and certificate number. This means the prices you see are for the exact same physical diamond, not just stones with similar specs. It is a true apples-to-apples comparison.
Diamond prices fluctuate based on supply and demand. Our data refreshes regularly so you can track trends over time. Use the price range on this page as a benchmark and compare it to historical averages when available.
Diamond Terminology
- Carat
- A unit of weight for diamonds equal to 200 milligrams. Larger carat weights are exponentially rarer, which is why prices increase non-linearly with size.
- Cut
- Refers to how well a diamond's facets interact with light. Cut quality ranges from Ideal to Poor and is the single biggest factor affecting a diamond's brilliance.
- Color
- Grades a diamond's lack of color on a scale from D (colorless) to Z (light yellow). Grades D-F are considered colorless; G-J are near-colorless and offer good value.
- Clarity
- Measures the presence of internal inclusions or surface blemishes. Grades range from Flawless (FL) to Included (I3). Most inclusions in VS2 and above are invisible to the naked eye.
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