3.1 Carat Marquise Lab Grown Diamond Prices Comparison
As of April 2026, 3.1 carat marquise lab grown diamonds usually range from $545 to $13,140, with an average price of $2,379.In the last month, prices for these diamonds are up 1.8%.Compare 138 verified listings across 9 retailers tracked by CaratRadar.
3.1 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 138 verified 3.1-carat marquise lab grown diamonds listed across 9 online retailers. Prices in this segment range from $545 to $13,140, with an average asking price of $2,379 and a median of $1,795.
The price spread of $12,595 (95.9% 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.
138 diamonds tracked in this segment
Price range: $545 to $13,140
Average price: $2,379
Median price: $1,795
Available across 9 retailers
Savings potential: up to 95.9%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
138
$545
$2,379
$1,795
$13,140
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 76.9%GIA | 3.11ct | Marquise | D | VVS1 | Excellent
From $5,965
Compare at $25,860
Save 72.8%GIA | 3.11ct | Marquise | D | VVS1 | Excellent
From $5,487
Compare at $20,167
Save 66.6%IGI | 3.11ct | Marquise | G | VS1 | Ideal
From $1,859
Compare at $5,570
Save 71.3%IGI | 3.11ct | Marquise | E | VVS1 | Ideal
From $3,018
Compare at $10,530
Save 81.4%IGI | 3.11ct | Marquise | D | VVS2 | Excellent
From $1,605
Compare at $8,620
Save 81.4%IGI | 3.11ct | Marquise | D | VVS2 | Excellent
From $1,605
Compare at $8,620
Save 81.4%IGI | 3.11ct | Marquise | D | VVS2 | Ideal
From $1,605
Compare at $8,620
Save 77.6%IGI | 3.11ct | Marquise | D | VVS1 | Ideal
From $2,261
Compare at $10,110
Save 16.7%IGI | 3.11ct | Marquise | FANCY | VVS2 | Ideal
From $2,580
Compare at $3,099
Save 59%IGI | 3.11ct | Marquise | F | VS1 | Excellent
From $1,981
Compare at $4,830
Save 76%IGI | 3.11ct | Marquise | F | VVS2 | Good
From $1,080
Compare at $4,500
Save 83.7%IGI | 3.11ct | Marquise | E | VVS2 | Ideal
From $1,160
Compare at $7,130
Save 84.5%IGI | 3.11ct | Marquise | E | VVS2 | Ideal
From $1,160
Compare at $7,500
Save 85.9%IGI | 3.11ct | Marquise | E | VVS2 | Very Good
From $1,056
Compare at $7,480
IGI | 3.11ct | Marquise | D | VVS2 | Excellent
From $6,730
Compare at $6,780
Save 73.9%IGI | 3.11ct | Marquise | E | VVS1 | Very Good
From $2,271
Compare at $8,700
Save 76.1%IGI | 3.11ct | Marquise | E | VS1 | Very Good
From $1,091
Compare at $4,560
Save 77.5%IGI | 3.11ct | Marquise | D | FL | Excellent
From $11,510
Compare at $51,050
Save 79.1%IGI | 3.12ct | Marquise | D | VVS2 | Excellent
From $1,821
Compare at $8,730
Save 67.6%IGI | 3.12ct | Marquise | F | VS1 | Excellent
From $1,289
Compare at $3,980
Save 78.7%IGI | 3.12ct | Marquise | E | VS1 | Very Good
From $1,320
Compare at $6,210
Save 77.5%IGI | 3.12ct | Marquise | D | FL | Excellent
From $11,546
Compare at $51,210
Save 77.3%IGI | 3.12ct | Marquise | D | VS1 | Very Good
From $1,851
Compare at $8,140
Save 84.6%IGI | 3.12ct | Marquise | E | VS1 | Excellent
From $935
Compare at $6,079
Save 66.3%GIA | 3.13ct | Marquise | D | VVS1 | Ideal
From $8,644
Compare at $25,660
Save 86.1%IGI | 3.13ct | Marquise | E | VVS1 | Ideal
From $1,205
Compare at $8,640
Save 71.6%IGI | 3.13ct | Marquise | H | VS1 | Ideal
From $1,251
Compare at $4,400
Save 17.3%IGI | 3.13ct | Marquise | D | VVS2 | Excellent
From $1,827
Compare at $2,209
Save 29%IGI | 3.13ct | Marquise | E | VVS2 | Ideal
From $1,365
Compare at $1,922
Save 77.5%IGI | 3.13ct | Marquise | F | VVS2 | Excellent
From $968
Compare at $4,300
Save 75.1%IGI | 3.13ct | Marquise | E | VVS1 | Ideal
From $2,181
Compare at $8,760
Save 77.5%IGI | 3.13ct | Marquise | D | FL | Very Good
From $11,582
Compare at $51,370
Save 70.4%IGI | 3.13ct | Marquise | D | VVS2 | Excellent
From $2,594
Compare at $8,760
Save 58.6%GIA | 3.14ct | Marquise | D | VVS2 | Excellent
From $3,621
Compare at $8,750
GIA | 3.14ct | Marquise | D | VS1 | Excellent
From $3,507
Compare at $3,520
IGI | 3.14ct | Marquise | D | VVS2 | Ideal
From $1,958
Compare at $2,070
Save 77.5%IGI | 3.14ct | Marquise | D | VVS2 | Excellent
From $1,958
Compare at $8,700
Save 54.1%IGI | 3.14ct | Marquise | FANCY | VVS2 | Very Good
From $3,019
Compare at $6,584
Save 76.4%IGI | 3.14ct | Marquise | E | IF | Ideal
From $5,560
Compare at $23,510
Save 28.6%IGI | 3.14ct | Marquise | D | VVS2 | Excellent
From $6,877
Compare at $9,630
Save 14.8%IGI | 3.14ct | Marquise | G | VS1 | Ideal
From $858
Compare at $1,007
Save 78.4%IGI | 3.14ct | Marquise | F | VVS2 | Excellent
From $1,666
Compare at $7,710
Save 79.9%IGI | 3.14ct | Marquise | E | VVS2 | Very Good
From $1,141
Compare at $5,670
Save 77.4%IGI | 3.14ct | Marquise | D | IF | Very Good
From $9,920
Compare at $43,850
Save 84.5%IGI | 3.14ct | Marquise | E | VVS2 | Very Good
From $1,171
Compare at $7,570
Save 83.2%IGI | 3.14ct | Marquise | F | VVS2 | Very Good
From $1,120
Compare at $6,660
Save 77.4%IGI | 3.14ct | Marquise | D | IF | Very Good
From $9,920
Compare at $43,850
Save 77.4%IGI | 3.14ct | Marquise | D | IF | Excellent
From $9,920
Compare at $43,850
Save 81.8%IGI | 3.14ct | Marquise | E | VVS2 | Very Good
From $1,365
Compare at $7,510
Save 28.6%IGI | 3.14ct | Marquise | E | VVS2 | Ideal
From $1,205
Compare at $1,688
Entry pricing in this category starts around $545.
What to Know When Shopping for 3.1 Carat Marquise Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $12,595 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 $1,795 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 138 comparable stones in this segment. Prices start around $545 and go up to $13,140.
Based on the latest market data, the average asking price is about $2,379 with a median around $1,795.
The observed spread is roughly $12,595 across tracked listings, which is about 95.9% 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 $1,795, 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 9 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 $12,595 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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