2.5 Carat Marquise Lab Grown Diamond Prices Comparison
As of April 2026, 2.5 carat marquise lab grown diamonds usually range from $505 to $11,394, with an average price of $2,297.In the last month, prices for these diamonds are down 1.4%.Compare 1,517 verified listings across 10 retailers tracked by CaratRadar.
2.5 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 1,517 verified 2.5-carat marquise lab grown diamonds listed across 10 online retailers. Prices in this segment range from $505 to $11,394, with an average asking price of $2,297 and a median of $1,713.
The price spread of $10,889 (95.6% 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.
1,517 diamonds tracked in this segment
Price range: $505 to $11,394
Average price: $2,297
Median price: $1,713
Available across 10 retailers
Savings potential: up to 95.6%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
1,517
$505
$2,297
$1,713
$11,394
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
Save 74.2%GCAL | 2.5ct | Marquise | E | VVS2 | Excellent
From $2,434
Compare at $9,440
Save 75.3%GCAL | 2.5ct | Marquise | D | IF | Excellent
From $8,341
Compare at $33,780
Save 76.3%GCAL | 2.5ct | Marquise | D | VVS2 | Excellent
From $1,339
Compare at $5,660
Save 50.4%GIA | 2.5ct | Marquise | D | VS1 | Excellent
From $2,923
Compare at $5,890
Save 63.7%GIA | 2.5ct | Marquise | D | VVS1 | Excellent
From $3,803
Compare at $10,469
Save 72.5%IGI | 2.5ct | Marquise | F | IF | Excellent
From $4,967
Compare at $18,060
Save 52.7%IGI | 2.5ct | Marquise | D | IF | Ideal
From $4,390
Compare at $9,280
Save 79.8%IGI | 2.5ct | Marquise | D | VS2 | Ideal
From $1,115
Compare at $5,510
Save 30.9%IGI | 2.5ct | Marquise | F | IF | Ideal
From $4,530
Compare at $6,554
Save 51.1%IGI | 2.5ct | Marquise | D | VVS1 | Ideal
From $1,826
Compare at $3,735
Save 76.9%IGI | 2.5ct | Marquise | D | IF | Very Good
From $6,830
Compare at $29,610
Save 76.9%IGI | 2.5ct | Marquise | D | IF | Very Good
From $6,830
Compare at $29,610
Save 53.6%IGI | 2.5ct | Marquise | F | VS1 | Excellent
From $1,280
Compare at $2,760
Save 54.6%IGI | 2.5ct | Marquise | E | VVS2 | Excellent
From $1,307
Compare at $2,879
Save 53.6%IGI | 2.5ct | Marquise | F | VS1 | Excellent
From $1,280
Compare at $2,760
Save 53.6%IGI | 2.5ct | Marquise | F | VS1 | Excellent
From $1,280
Compare at $2,760
Save 50.3%IGI | 2.5ct | Marquise | E | VVS2 | Excellent
From $1,430
Compare at $2,879
Save 56.4%IGI | 2.5ct | Marquise | F | VVS2 | Excellent
From $1,256
Compare at $2,879
Save 30.2%IGI | 2.5ct | Marquise | D | IF | Ideal
From $4,788
Compare at $6,863
Save 51.1%IGI | 2.5ct | Marquise | D | VVS1 | Ideal
From $1,826
Compare at $3,735
Save 41.9%IGI | 2.5ct | Marquise | E | VVS1 | Ideal
From $1,580
Compare at $2,720
Save 79.6%IGI | 2.5ct | Marquise | G | VS1 | Ideal
From $1,176
Compare at $5,760
Save 75.3%IGI | 2.5ct | Marquise | D | IF | Very Good
From $5,536
Compare at $22,400
Save 71.3%IGI | 2.5ct | Marquise | E | VVS1 | Ideal
From $3,077
Compare at $10,730
Save 74.4%IGI | 2.5ct | Marquise | E | VVS2 | Ideal
From $1,415
Compare at $5,530
Save 62.3%IGI | 2.5ct | Marquise | D | VS1 | Excellent
From $1,476
Compare at $3,911
Save 58.9%IGI | 2.5ct | Marquise | E | VS1 | Very Good
From $1,175
Compare at $2,859
Save 59.2%IGI | 2.5ct | Marquise | F | VS1 | Excellent
From $1,127
Compare at $2,760
Save 71.5%IGI | 2.5ct | Marquise | D | IF | Excellent
From $5,408
Compare at $18,996
Save 40.5%IGI | 2.5ct | Marquise | F | VVS1 | Ideal
From $1,354
Compare at $2,274
Save 59.2%IGI | 2.5ct | Marquise | F | VS1 | Excellent
From $1,127
Compare at $2,760
Save 76.1%IGI | 2.5ct | Marquise | E | VS2 | Ideal
From $1,834
Compare at $7,660
Save 38.2%IGI | 2.5ct | Marquise | G | VVS2 | Very Good
From $913
Compare at $1,478
IGI | 2.5ct | Marquise | FANCY | VS2 | Very Good
From $2,164
Compare at $3,246
Save 76.9%IGI | 2.5ct | Marquise | D | IF | Very Good
From $6,840
Compare at $29,650
Save 73.9%IGI | 2.5ct | Marquise | E | VS2 | Very Good
From $881
Compare at $3,380
Save 80.3%IGI | 2.5ct | Marquise | F | VVS2 | Excellent
From $1,430
Compare at $7,240
Save 24.1%IGI | 2.5ct | Marquise | E | VS1 | Very Good
From $1,451
Compare at $1,912
Save 75.5%IGI | 2.5ct | Marquise | F | VVS2 | Excellent
From $1,392
Compare at $5,690
Save 27.1%IGI | 2.5ct | Marquise | F | VS2 | Very Good
From $870
Compare at $1,192
Save 71.4%IGI | 2.5ct | Marquise | F | VS1 | Very Good
From $2,828
Compare at $9,880
Save 36.3%IGI | 2.5ct | Marquise | E | VVS2 | Ideal
From $999
Compare at $1,568
Save 78.8%IGI | 2.5ct | Marquise | E | VVS2 | Ideal
From $1,167
Compare at $5,510
Save 62.5%IGI | 2.5ct | Marquise | D | IF | Excellent
From $8,291
Compare at $22,099
Save 78.5%IGI | 2.5ct | Marquise | E | VS2 | Very Good
From $858
Compare at $3,980
Save 45.9%IGI | 2.5ct | Marquise | D | VS1 | Very Good
From $740
Compare at $1,368
Save 66.7%IGI | 2.5ct | Marquise | E | IF | Very Good
From $6,690
Compare at $20,103
Save 65.2%IGI | 2.5ct | Marquise | G | VVS2 | Ideal
From $991
Compare at $2,850
Save 71.6%IGI | 2.5ct | Marquise | H | VS2 | Ideal
From $916
Compare at $3,220
Save 41.3%IGI | 2.5ct | Marquise | E | VVS1 | Very Good
From $1,215
Compare at $2,070
Entry pricing in this category starts around $505.
What to Know When Shopping for 2.5 Carat Marquise Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $10,889 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 $1,713 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 1,517 comparable stones in this segment. Prices start around $505 and go up to $11,394.
Based on the latest market data, the average asking price is about $2,297 with a median around $1,713.
The observed spread is roughly $10,889 across tracked listings, which is about 95.6% from highest to lowest offer in this bucket.
We refresh pricing data daily so these pages stay current with market changes.
Based on our data, the median price is $1,713, which represents the midpoint of the market. Anything below this figure from a reputable retailer is a solid deal.
We currently track this stone category across 10 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 $10,889 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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