2.5 Carat Marquise Lab Grown Diamond Prices Comparison
As of February 2026, 2.5 carat marquise lab grown diamonds usually range from $597 to $10,388, with an average price of $1,327.In the last month, prices for these diamonds are down 3.5%.Compare 1,003 verified listings across 12 retailers tracked by CaratRadar.
2.5 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 1,003 verified 2.5-carat marquise lab grown diamonds listed across 12 online retailers. Prices in this segment range from $597 to $10,388, with an average asking price of $1,327 and a median of $977.
The price spread of $9,791 (94.3% 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.
1,003 diamonds tracked in this segment
Price range: $597 to $10,388
Average price: $1,327
Median price: $977
Available across 12 retailers
Savings potential: up to 94.3%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
1,003
$597
$1,327
$977
$10,388
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
IGISave 86.5%2.46ct | Marquise | G | VVS1 | Ideal
From $634
Compare at $4,690
IGISave 84.4%2.46ct | Marquise | G | VVS2 | Ideal
From $679
Compare at $4,350
IGISave 69.9%2.46ct | Marquise | D | IF | Very Good
From $4,701
Compare at $15,630
IGISave 70.6%2.46ct | Marquise | E | VS1 | Very Good
From $1,036
Compare at $3,530
IGISave 67.6%2.46ct | Marquise | E | VS1 | Ideal
From $992
Compare at $3,060
IGISave 81.6%2.46ct | Marquise | F | VVS2 | Excellent
From $912
Compare at $4,950
IGISave 78.8%2.46ct | Marquise | F | VS2 | Excellent
From $845
Compare at $3,980
IGISave 81.5%2.46ct | Marquise | E | VS1 | Excellent
From $903
Compare at $4,890
IGISave 57.7%2.46ct | Marquise | E | VS1 | Ideal
From $895
Compare at $2,115
IGISave 50.8%2.46ct | Marquise | F | VS1 | Very Good
From $811
Compare at $1,650
IGISave 71.9%2.46ct | Marquise | G | VS1 | Ideal
From $664
Compare at $2,360
IGISave 73.4%2.46ct | Marquise | E | VVS2 | Ideal
From $898
Compare at $3,380
IGISave 83.4%2.46ct | Marquise | G | VVS2 | Excellent
From $722
Compare at $4,340
IGISave 56.7%2.46ct | Marquise | E | VS2 | Ideal
From $862
Compare at $1,990
IGISave 68.8%2.46ct | Marquise | E | VVS2 | Ideal
From $844
Compare at $2,705
IGISave 51.1%2.46ct | Marquise | F | VVS2 | Very Good
From $845
Compare at $1,727
GIASave 63.4%2.46ct | Marquise | D | VS1 | Ideal
From $1,941
Compare at $5,310
IGISave 64.5%2.46ct | Marquise | F | VS1 | Very Good
From $694
Compare at $1,953
IGISave 76.9%2.46ct | Marquise | E | VS1 | Very Good
From $1,125
Compare at $4,860
IGISave 72.6%2.46ct | Marquise | F | VS1 | Ideal
From $836
Compare at $3,050
IGISave 71.8%2.46ct | Marquise | E | VS1 | Very Good
From $907
Compare at $3,220
IGISave 78.1%2.46ct | Marquise | E | VVS2 | Very Good
From $966
Compare at $4,420
IGISave 84.3%2.46ct | Marquise | G | VVS2 | Excellent
From $683
Compare at $4,340
IGISave 50.6%2.46ct | Marquise | F | VS1 | Very Good
From $834
Compare at $1,688
IGISave 55.7%2.46ct | Marquise | E | VS1 | Excellent
From $905
Compare at $2,040
IGISave 57.7%2.46ct | Marquise | E | VS1 | Ideal
From $895
Compare at $2,115
IGISave 14.1%2.47ct | Marquise | D | VVS1 | Very Good
From $1,214
Compare at $1,413
IGISave 84.2%2.47ct | Marquise | E | VVS1 | Ideal
From $967
Compare at $6,100
IGISave 73.8%2.47ct | Marquise | D | IF | Excellent
From $4,450
Compare at $16,993
IGISave 77.5%2.47ct | Marquise | E | VS1 | Ideal
From $906
Compare at $4,020
IGISave 41.9%2.47ct | Marquise | D | VVS2 | Very Good
From $2,347
Compare at $4,040
IGISave 80.7%2.47ct | Marquise | E | VS1 | Excellent
From $716
Compare at $3,700
IGISave 82.3%2.47ct | Marquise | D | VS1 | Excellent
From $950
Compare at $5,375
IGISave 74.9%2.47ct | Marquise | D | VVS2 | Excellent
From $1,534
Compare at $6,100
IGISave 36.2%2.47ct | Marquise | D | VVS2 | Very Good
From $1,098
Compare at $1,721
IGISave 81.4%2.47ct | Marquise | E | VVS2 | Very Good
From $893
Compare at $4,800
IGISave 84.6%2.47ct | Marquise | G | VVS2 | Excellent
From $673
Compare at $4,370
IGISave 74.7%2.47ct | Marquise | E | VS1 | Ideal
From $897
Compare at $3,550
IGISave 68.8%2.47ct | Marquise | E | VVS2 | Very Good
From $847
Compare at $2,715
IGISave 72%2.47ct | Marquise | E | VS1 | Excellent
From $858
Compare at $3,070
IGISave 80.5%2.47ct | Marquise | F | VS1 | Very Good
From $868
Compare at $4,440
IGISave 53.6%2.47ct | Marquise | E | IF | Excellent
From $5,345
Compare at $11,517
IGISave 73.2%2.47ct | Marquise | E | VS1 | Ideal
From $867
Compare at $3,230
IGISave 73.9%2.47ct | Marquise | G | VS1 | Ideal
From $683
Compare at $2,620
IGISave 71.1%2.47ct | Marquise | E | VS1 | Ideal
From $887
Compare at $3,070
IGISave 68.8%2.47ct | Marquise | E | VVS2 | Ideal
From $847
Compare at $2,715
IGISave 58.9%2.47ct | Marquise | D | VS1 | Very Good
From $2,207
Compare at $5,370
IGISave 78.3%2.47ct | Marquise | E | VS2 | Ideal
From $691
Compare at $3,180
IGISave 85.9%2.47ct | Marquise | E | VVS2 | Excellent
From $1,034
Compare at $7,330
IGISave 74.9%2.47ct | Marquise | F | VS1 | Excellent
From $839
Compare at $3,350
Entry pricing in this category starts around $597.
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 $9,791 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 $977 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 1,003 comparable stones in this segment. Prices start around $597 and go up to $10,388.
Based on the latest market data, the average asking price is about $1,327 with a median around $977.
The observed spread is roughly $9,791 across tracked listings, which is about 94.3% 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 $977, 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 12 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 $9,791 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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