2.5 Carat Lab Grown Diamond Prices Comparison
As of May 2026, the average price of a 2.5 carat lab grown diamond is $1,999.2.5 carat diamonds can cost anywhere from $110 to $15,788 depending on shape, color, clarity, and other factors.In the last month, prices for these diamonds are down 4.8%.Compare 32,557 verified listings across 16 retailers in the tables below.
2.5 Carat Lab Grown Diamond Market Overview
CaratRadar currently tracks 32,557 verified 2.5-carat lab grown diamonds listed across 16 online retailers. Prices in this segment range from $110 to $15,788, with an average asking price of $1,999 and a median of $1,412.
The price spread of $15,678 (99.3% 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.
32,557 diamonds tracked in this segment
Price range: $110 to $15,788
Average price: $1,999
Median price: $1,412
Available across 16 retailers
Savings potential: up to 99.3%
Price Range Overview
As of May 28, 2026Real market range for this carat, shape, and diamond type.
32,557
$110
$1,999
$1,412
$15,788
Price History
Price Comparison Matrix
2.5 Carat Lab Grown Diamond Prices by Shape
Shape-level averages for this carat and type. Open each shape page for full market detail.
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
Save 11.4%IGI | 2.53ct | Emerald | E | SI1 | Ideal
From $351
Compare at $396
Save 58.9%IGI | 2.52ct | Emerald | F | SI1 | Ideal
From $361
Compare at $878
Save 42.9%IGI | 2.6ct | Emerald | G | VS1 | Very Good
From $366
Compare at $641
Save 68%IGI | 2.6ct | Princess | H | SI1 | Ideal
From $373
Compare at $1,167
Save 47.2%IGI | 2.58ct | Emerald | G | VS1 | Ideal
From $378
Compare at $716
Save 63.6%IGI | 2.52ct | Emerald | G | VS1 | Excellent
From $378
Compare at $1,039
Save 42%IGI | 2.59ct | Emerald | H | VVS2 | Excellent
From $382
Compare at $659
Save 48.5%IGI | 2.58ct | Emerald | G | VS1 | Ideal
From $384
Compare at $746
Save 48.5%IGI | 2.58ct | Emerald | G | VS1 | Ideal
From $384
Compare at $746
Save 61.4%IGI | 2.5ct | Radiant | H | VS1 | Ideal
From $386
Compare at $1,000
Save 42.9%IGI | 2.54ct | Marquise | H | VS1 | Excellent
From $386
Compare at $676
Save 79.9%IGI | 2.58ct | Cushion | H | VS2 | Very Good
From $387
Compare at $1,930
Save 42%IGI | 2.52ct | Marquise | H | VS1 | Very Good
From $389
Compare at $671
Save 42.8%IGI | 2.59ct | Emerald | G | VS1 | Very Good
From $394
Compare at $689
Save 68.8%IGI | 2.59ct | Emerald | G | VVS2 | Very Good
From $396
Compare at $1,271
Save 53.8%IGI | 2.59ct | Emerald | G | VS1 | Very Good
From $396
Compare at $858
Save 41.9%IGI | 2.6ct | Marquise | G | VS1 | Very Good
From $396
Compare at $682
Save 41.1%IGI | 2.57ct | Oval | H | VS1 | Excellent
From $397
Compare at $674
Save 67.7%IGI | 2.59ct | Radiant | H | VVS2 | Very Good
From $400
Compare at $1,239
Save 77.7%IGI | 2.53ct | Oval | I | VS1 | Ideal
From $403
Compare at $1,810
Save 80%IGI | 2.58ct | Cushion | H | VS1 | Very Good
From $405
Compare at $2,020
Save 78.9%IGI | 2.57ct | Oval | I | VS1 | Ideal
From $409
Compare at $1,940
Save 58.1%IGI | 2.57ct | Oval | H | VS2 | Ideal
From $409
Compare at $976
IGI | 2.54ct | Cushion | F | SI1 | Very Good
From $410
Compare at $1,241
IGI | 2.58ct | Cushion | H | VS2 | Very Good
From $410
Compare at $2,040
Save 60.2%IGI | 2.54ct | Marquise | G | VS1 | Ideal
From $410
Compare at $1,031
Save 41.3%IGI | 2.5ct | Oval | G | VS1 | Very Good
From $410
Compare at $699
Save 58.3%IGI | 2.52ct | Cushion | I | VVS2 | Ideal
From $412
Compare at $987
Save 60.5%IGI | 2.55ct | Marquise | H | VS1 | Very Good
From $412
Compare at $1,042
Save 39.1%IGI | 2.5ct | Oval | E | SI1 | Ideal
From $414
Compare at $680
Save 42%IGI | 2.5ct | Radiant | G | VS1 | Very Good
From $414
Compare at $714
Save 42.8%IGI | 2.57ct | Emerald | G | VVS2 | Very Good
From $414
Compare at $724
Save 42.8%IGI | 2.57ct | Emerald | G | VVS2 | Excellent
From $414
Compare at $724
Save 42.7%IGI | 2.58ct | Emerald | G | VVS2 | Excellent
From $416
Compare at $726
Save 42.7%IGI | 2.58ct | Emerald | G | VVS2 | Very Good
From $416
Compare at $726
Save 79.8%IGI | 2.51ct | Oval | H | VS1 | Excellent
From $417
Compare at $2,060
IGI | 2.59ct | Emerald | G | VVS2 | Very Good
From $417
Compare at $799
Save 42.7%IGI | 2.59ct | Emerald | G | VVS2 | Very Good
From $418
Compare at $729
Save 40.9%IGI | 2.53ct | Oval | G | VS1 | Very Good
From $419
Compare at $709
Save 64.6%IGI | 2.51ct | Oval | G | VVS2 | Very Good
From $420
Compare at $1,187
Save 41.3%IGI | 2.59ct | Oval | G | VVS2 | Very Good
From $420
Compare at $716
Save 41.9%IGI | 2.51ct | Marquise | G | VS1 | Excellent
From $422
Compare at $726
Save 60.7%IGI | 2.55ct | Oval | G | VS2 | Ideal
From $423
Compare at $1,075
Save 60%IGI | 2.55ct | Oval | G | VS2 | Ideal
From $423
Compare at $1,057
Save 60%IGI | 2.55ct | Oval | G | VS2 | Ideal
From $423
Compare at $1,057
Save 60%IGI | 2.55ct | Oval | G | VS2 | Ideal
From $423
Compare at $1,057
Save 60%IGI | 2.55ct | Oval | G | VS2 | Ideal
From $423
Compare at $1,057
Save 59.4%IGI | 2.51ct | Oval | G | VS1 | Very Good
From $423
Compare at $1,041
Save 48.4%IGI | 2.59ct | Cushion | G | VS2 | Very Good
From $423
Compare at $819
Save 61.3%IGI | 2.58ct | Oval | G | VS1 | Very Good
From $423
Compare at $1,093
Entry pricing in this category starts around $110.
What to Know When Shopping for 2.5 Carat Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $15,678 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 $1,412 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.
Frequently Asked Questions
We currently track 32,557 comparable stones in this segment. Prices start around $110 and go up to $15,788.
Based on the latest market data, the average asking price is about $1,999 with a median around $1,412.
The observed spread is roughly $15,678 across tracked listings, which is about 99.3% 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 $1,999. The median price is $1,412, 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 16 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 $15,678 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.
Related Price Categories
Explore adjacent carat ranges and shapes to compare market shifts.
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2.5 Carat Oval Lab Grown Diamond Prices
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2.5 Carat Marquise Lab Grown Diamond Prices
2.5 Carat Emerald Lab Grown Diamond Prices
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