3 Carat Marquise Lab Grown Diamond Prices Comparison
As of May 2026, 3 carat marquise lab grown diamonds usually range from $414 to $9,578, with an average price of $2,136.In the last month, prices for these diamonds are down 0.3%.Compare 2,441 verified listings across 11 retailers tracked by CaratRadar.
3 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 2,441 verified 3-carat marquise lab grown diamonds listed across 11 online retailers. Prices in this segment range from $414 to $9,578, with an average asking price of $2,136 and a median of $1,490.
The price spread of $9,164 (95.7% 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.
2,441 diamonds tracked in this segment
Price range: $414 to $9,578
Average price: $2,136
Median price: $1,490
Available across 11 retailers
Savings potential: up to 95.7%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
2,441
$414
$2,136
$1,490
$9,578
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 30.7%IGI | 3.06ct | Marquise | G | VS2 | Ideal
From $486
Compare at $701
Save 30.7%IGI | 3.06ct | Marquise | G | VS2 | Excellent
From $486
Compare at $701
Save 29.7%IGI | 3.04ct | Marquise | G | VS2 | Ideal
From $490
Compare at $697
IGI | 3.04ct | Marquise | G | VVS2 | Very Good
From $490
Compare at $1,179
Save 40.8%IGI | 3.04ct | Marquise | G | VVS2 | Very Good
From $490
Compare at $827
IGI | 3.09ct | Marquise | G | VS2 | Ideal
From $491
Compare at $708
Save 30.6%IGI | 3.09ct | Marquise | G | VS2 | Ideal
From $491
Compare at $708
Save 30.6%IGI | 3.09ct | Marquise | G | VS2 | Ideal
From $491
Compare at $708
Save 30.7%IGI | 3.1ct | Marquise | G | VS2 | Ideal
From $493
Compare at $711
Save 30.6%IGI | 3.02ct | Marquise | G | VS2 | Ideal
From $493
Compare at $710
Save 40.8%IGI | 3.06ct | Marquise | G | VVS2 | Excellent
From $493
Compare at $833
Save 30.7%IGI | 3.01ct | Marquise | G | VVS2 | Excellent
From $497
Compare at $717
Save 30.5%IGI | 3.09ct | Marquise | G | VS1 | Ideal
From $498
Compare at $717
Save 61%IGI | 3.01ct | Marquise | G | VS1 | Very Good
From $499
Compare at $1,280
Save 61.2%IGI | 3.02ct | Marquise | G | VS1 | Very Good
From $500
Compare at $1,288
Save 61.2%IGI | 3.02ct | Marquise | G | VS1 | Excellent
From $500
Compare at $1,288
Save 22.3%IGI | 3ct | Marquise | H | VVS2 | Very Good
From $504
Compare at $649
Save 22.3%IGI | 3.05ct | Marquise | G | VS1 | Very Good
From $505
Compare at $650
Save 21.3%IGI | 3.02ct | Marquise | G | VS1 | Very Good
From $507
Compare at $644
Save 60.7%IGI | 3.02ct | Marquise | G | VS1 | Excellent
From $507
Compare at $1,290
Save 61.6%IGI | 3.06ct | Marquise | G | VS1 | Excellent
From $507
Compare at $1,320
Save 58.4%IGI | 3ct | Marquise | E | SI1 | Very Good
From $510
Compare at $1,225
Save 61.8%IGI | 3.08ct | Marquise | G | VS1 | Excellent
From $511
Compare at $1,337
Save 61.9%IGI | 3.09ct | Marquise | G | VS1 | Excellent
From $512
Compare at $1,344
Save 58.4%IGI | 3.01ct | Marquise | F | SI1 | Very Good
From $512
Compare at $1,231
Save 61.5%IGI | 3.02ct | Marquise | G | VVS2 | Ideal
From $515
Compare at $1,338
Save 61%IGI | 3.06ct | Marquise | G | VS1 | Very Good
From $515
Compare at $1,322
Save 61.7%IGI | 3.03ct | Marquise | G | VVS2 | Very Good
From $516
Compare at $1,346
Save 61.2%IGI | 3.07ct | Marquise | G | VS1 | Very Good
From $516
Compare at $1,330
Save 59.6%IGI | 3.01ct | Marquise | G | VS1 | Ideal
From $519
Compare at $1,285
Save 61.9%IGI | 3.06ct | Marquise | G | VVS2 | Ideal
From $522
Compare at $1,371
Save 61.9%IGI | 3.06ct | Marquise | G | VVS2 | Very Good
From $522
Compare at $1,371
Save 61.9%IGI | 3.06ct | Marquise | G | VVS2 | Very Good
From $522
Compare at $1,370
Save 61.9%IGI | 3.06ct | Marquise | G | VVS2 | Excellent
From $522
Compare at $1,370
Save 62.1%IGI | 3.07ct | Marquise | G | VVS2 | Very Good
From $523
Compare at $1,379
Save 59.9%IGI | 3.04ct | Marquise | G | VS1 | Ideal
From $525
Compare at $1,308
Save 61.4%IGI | 3.05ct | Marquise | G | VVS2 | Excellent
From $526
Compare at $1,363
Save 62.4%IGI | 3.1ct | Marquise | G | VVS2 | Excellent
From $528
Compare at $1,403
Save 61.4%IGI | 3.06ct | Marquise | G | VVS2 | Very Good
From $529
Compare at $1,371
Save 60.2%IGI | 3.07ct | Marquise | G | VS1 | Ideal
From $530
Compare at $1,333
Save 61.6%IGI | 3.07ct | Marquise | G | VVS2 | Excellent
From $530
Compare at $1,380
Save 61.9%IGI | 3.1ct | Marquise | G | VVS2 | Excellent
From $536
Compare at $1,405
Save 59.6%IGI | 3.01ct | Marquise | G | VVS2 | Very Good
From $537
Compare at $1,328
Save 22.4%IGI | 3.02ct | Marquise | G | VVS1 | Excellent
From $560
Compare at $722
Save 23.5%IGI | 3.03ct | Marquise | G | VVS1 | Excellent
From $561
Compare at $733
Save 32.7%IGI | 3.01ct | Marquise | G | VS1 | Very Good
From $562
Compare at $835
Save 77.7%IGI | 3.01ct | Marquise | H | VS2 | Very Good
From $562
Compare at $2,520
Save 53.9%IGI | 3.02ct | Marquise | E | SI1 | Very Good
From $567
Compare at $1,230
Save 24.1%IGI | 3.01ct | Marquise | F | VS1 | Excellent
From $578
Compare at $762
Save 70%IGI | 3.05ct | Marquise | G | VVS2 | Good
From $581
Compare at $1,938
Entry pricing in this category starts around $414.
What to Know When Shopping for 3 Carat Marquise Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $9,164 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 $1,490 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 2,441 comparable stones in this segment. Prices start around $414 and go up to $9,578.
Based on the latest market data, the average asking price is about $2,136 with a median around $1,490.
The observed spread is roughly $9,164 across tracked listings, which is about 95.7% 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 $2,136. The median price is $1,490, 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 11 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 $9,164 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.
2.9 Carat Marquise Lab Grown Diamond Prices
3.1 Carat Marquise Lab Grown Diamond Prices
2.8 Carat Marquise Lab Grown Diamond Prices
3.2 Carat Marquise Lab Grown Diamond Prices
2.7 Carat Marquise Lab Grown Diamond Prices
3.3 Carat Marquise Lab Grown Diamond Prices
2.6 Carat Marquise Lab Grown Diamond Prices
3 Carat Round Lab Grown Diamond Prices
3 Carat Radiant Lab Grown Diamond Prices
3 Carat Oval Lab Grown Diamond Prices
3 Carat Cushion Lab Grown Diamond Prices
3 Carat Emerald Lab Grown Diamond Prices
Tracking Lab Grown inventory for 3 carat Marquise diamonds.