3 Carat Marquise Lab Grown Diamond Prices Comparison
As of April 2026, 3 carat marquise lab grown diamonds usually range from $515 to $9,964, with an average price of $2,191.In the last month, prices for these diamonds are up 1.2%.Compare 9,167 verified listings across 13 retailers tracked by CaratRadar.
3 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 9,167 verified 3-carat marquise lab grown diamonds listed across 13 online retailers. Prices in this segment range from $515 to $9,964, with an average asking price of $2,191 and a median of $1,642.
The price spread of $9,449 (94.8% 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.
9,167 diamonds tracked in this segment
Price range: $515 to $9,964
Average price: $2,191
Median price: $1,642
Available across 13 retailers
Savings potential: up to 94.8%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
9,167
$515
$2,191
$1,642
$9,964
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 66.6%GCAL | 3ct | Marquise | D | VS1 | Excellent
From $4,908
Compare at $14,710
Save 76.9%GCAL | 3ct | Marquise | E | VVS2 | Excellent
From $1,501
Compare at $6,490
Save 65.3%GIA | 3ct | Marquise | E | VVS1 | Excellent
From $3,946
Compare at $11,372
Save 75.7%GIA | 3ct | Marquise | D | VVS2 | Excellent
From $5,668
Compare at $23,360
Save 23.3%GIA | 3ct | Marquise | G | VS1 | Excellent
From $4,664
Compare at $6,080
Save 78.3%GIA | 3ct | Marquise | F | VVS2 | Very Good
From $3,020
Compare at $13,930
GIA | 3ct | Marquise | D | VVS1 | Ideal
From $6,335
Save 76.2%IGI | 3ct | Marquise | G | VS1 | Excellent
From $1,497
Compare at $6,290
Save 52.2%IGI | 3ct | Marquise | E | VS1 | Very Good
From $1,725
Compare at $3,609
Save 76.9%IGI | 3ct | Marquise | G | IF | Ideal
From $7,465
Compare at $32,380
Save 48.1%IGI | 3ct | Marquise | H | VVS1 | Ideal
From $847
Compare at $1,634
Save 56.9%IGI | 3ct | Marquise | G | VVS2 | Excellent
From $1,119
Compare at $2,597
Save 75.4%IGI | 3ct | Marquise | D | IF | Very Good
From $10,050
Compare at $40,892
Save 59.2%IGI | 3ct | Marquise | E | VVS2 | Excellent
From $1,273
Compare at $3,121
Save 59.2%IGI | 3ct | Marquise | E | VVS2 | Excellent
From $1,273
Compare at $3,121
Save 82.3%IGI | 3ct | Marquise | E | VVS2 | Excellent
From $1,273
Compare at $7,180
Save 52.1%IGI | 3ct | Marquise | F | VVS2 | Excellent
From $1,346
Compare at $2,811
Save 55.1%IGI | 3ct | Marquise | E | VVS2 | Excellent
From $1,401
Compare at $3,121
Save 77.4%IGI | 3ct | Marquise | D | IF | Very Good
From $9,490
Compare at $41,950
Save 52.1%IGI | 3ct | Marquise | F | VVS2 | Excellent
From $1,346
Compare at $2,811
Save 55.1%IGI | 3ct | Marquise | E | VVS2 | Excellent
From $1,401
Compare at $3,121
Save 55.7%IGI | 3ct | Marquise | E | VS1 | Excellent
From $1,309
Compare at $2,954
Save 57.9%IGI | 3ct | Marquise | E | VS1 | Excellent
From $1,244
Compare at $2,954
Save 52.1%IGI | 3ct | Marquise | F | VVS2 | Excellent
From $1,346
Compare at $2,811
Save 57.9%IGI | 3ct | Marquise | E | VS1 | Very Good
From $1,244
Compare at $2,954
Save 56.8%IGI | 3ct | Marquise | F | VVS2 | Excellent
From $1,215
Compare at $2,811
Save 55.1%IGI | 3ct | Marquise | E | VVS2 | Excellent
From $1,401
Compare at $3,121
IGI | 3ct | Marquise | FANCY | VVS2 | Very Good
From $1,764
Compare at $2,507
Save 54.1%IGI | 3ct | Marquise | D | VVS2 | Ideal
From $1,835
Compare at $4,000
Save 35.8%IGI | 3ct | Marquise | G | VVS2 | Ideal
From $897
Compare at $1,398
Save 23.4%IGI | 3ct | Marquise | E | VS2 | Very Good
From $1,011
Compare at $1,319
Save 77.4%IGI | 3ct | Marquise | D | IF | Very Good
From $9,490
Compare at $41,950
Save 53.1%IGI | 3ct | Marquise | F | VS1 | Excellent
From $2,535
Compare at $5,400
Save 45.6%IGI | 3ct | Marquise | D | VS1 | Excellent
From $1,273
Compare at $2,341
Save 81.9%IGI | 3ct | Marquise | E | SI1 | Ideal
From $890
Compare at $4,910
Save 31.2%IGI | 3ct | Marquise | H | VVS1 | Excellent
From $913
Compare at $1,328
Save 76.1%IGI | 3ct | Marquise | F | VVS2 | Ideal
From $1,752
Compare at $7,330
Save 85.2%IGI | 3ct | Marquise | G | VVS2 | Ideal
From $835
Compare at $5,630
Save 81.9%IGI | 3ct | Marquise | E | SI1 | Ideal
From $890
Compare at $4,910
Save 74.3%IGI | 3ct | Marquise | F | VVS2 | Ideal
From $1,456
Compare at $5,660
Save 74.2%IGI | 3ct | Marquise | F | SI1 | Ideal
From $855
Compare at $3,310
Save 45.6%IGI | 3ct | Marquise | D | VS1 | Excellent
From $1,235
Compare at $2,270
Save 81.3%IGI | 3ct | Marquise | E | VVS2 | Excellent
From $1,215
Compare at $6,500
Save 80.7%IGI | 3ct | Marquise | D | VVS2 | Excellent
From $1,607
Compare at $8,310
Save 81.4%IGI | 3ct | Marquise | E | VS2 | Ideal
From $1,067
Compare at $5,730
Save 56.3%IGI | 3ct | Marquise | F | VVS2 | Excellent
From $1,063
Compare at $2,430
Save 56.3%IGI | 3ct | Marquise | F | VVS2 | Excellent
From $1,063
Compare at $2,430
Save 76.9%IGI | 3ct | Marquise | F | VS2 | Ideal
From $939
Compare at $4,070
Save 76.2%IGI | 3ct | Marquise | D | VS2 | Ideal
From $1,457
Compare at $6,130
Save 57.3%IGI | 3ct | Marquise | F | VS1 | Excellent
From $973
Compare at $2,280
Entry pricing in this category starts around $515.
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 $9,449 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 $1,642 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 9,167 comparable stones in this segment. Prices start around $515 and go up to $9,964.
Based on the latest market data, the average asking price is about $2,191 with a median around $1,642.
The observed spread is roughly $9,449 across tracked listings, which is about 94.8% 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 $1,642, 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 13 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 $9,449 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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