1.3 Carat Marquise Lab Grown Diamond Prices Comparison
As of February 2026, 1.3 carat marquise lab grown diamonds usually range from $380 to $3,760, with an average price of $703.In the last month, prices for these diamonds are down 0.4%.Compare 826 verified listings across 8 retailers tracked by CaratRadar.
1.3 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 826 verified 1.3-carat marquise lab grown diamonds listed across 8 online retailers. Prices in this segment range from $380 to $3,760, with an average asking price of $703 and a median of $591.
The price spread of $3,380 (89.9% 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.
826 diamonds tracked in this segment
Price range: $380 to $3,760
Average price: $703
Median price: $591
Available across 8 retailers
Savings potential: up to 89.9%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
826
$380
$703
$591
$3,760
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 58.7%1.25ct | Marquise | G | VVS2 | Ideal
From $433
Compare at $1,050
IGISave 14.7%1.25ct | Marquise | E | VVS1 | Excellent
From $548
Compare at $642
IGISave 70.8%1.25ct | Marquise | D | VS2 | Ideal
From $592
Compare at $2,030
IGISave 71.3%1.25ct | Marquise | D | VS1 | Ideal
From $704
Compare at $2,450
IGISave 71.4%1.25ct | Marquise | E | VS1 | Ideal
From $673
Compare at $2,350
IGISave 66.7%1.25ct | Marquise | E | VVS1 | Excellent
From $575
Compare at $1,730
IGISave 65.8%1.25ct | Marquise | E | VVS1 | Excellent
From $548
Compare at $1,604
IGISave 61.3%1.25ct | Marquise | E | VS1 | Ideal
From $535
Compare at $1,382
IGISave 63.4%1.25ct | Marquise | E | VS1 | Excellent
From $480
Compare at $1,310
GIASave 82.5%1.25ct | Marquise | D | IF | Ideal
From $1,092
Compare at $6,240
IGISave 57.8%1.25ct | Marquise | D | VVS2 | Ideal
From $672
Compare at $1,594
IGISave 38.7%1.25ct | Marquise | D | VS1 | Ideal
From $622
Compare at $1,015
IGI1.25ct | Marquise | E | VVS2 | Excellent
From $663
Compare at $693
IGISave 39.7%1.25ct | Marquise | F | VVS2 | Ideal
From $519
Compare at $860
IGISave 54.6%1.25ct | Marquise | D | VS1 | Excellent
From $592
Compare at $1,305
IGISave 67.8%1.25ct | Marquise | F | VVS2 | Ideal
From $487
Compare at $1,510
IGISave 53.6%1.25ct | Marquise | F | VVS2 | Ideal
From $492
Compare at $1,060
IGISave 50.6%1.25ct | Marquise | E | IF | Excellent
From $1,624
Compare at $3,287
IGISave 59.3%1.25ct | Marquise | F | VS1 | Excellent
From $535
Compare at $1,314
IGISave 59.2%1.25ct | Marquise | E | VVS2 | Ideal
From $571
Compare at $1,398
IGISave 15.5%1.25ct | Marquise | E | VVS2 | Very Good
From $513
Compare at $606
IGISave 15.5%1.25ct | Marquise | D | VS1 | Very Good
From $513
Compare at $606
IGISave 51.2%1.25ct | Marquise | D | VS1 | Ideal
From $556
Compare at $1,140
1.25ct | Marquise | D | VS1 | Very Good
From $531
Compare at $1,090
IGISave 54.3%1.25ct | Marquise | E | VVS2 | Excellent
From $596
Compare at $1,305
IGISave 73.5%1.25ct | Marquise | D | VVS2 | Very Good
From $497
Compare at $1,880
IGISave 58.5%1.25ct | Marquise | E | VS2 | Ideal
From $519
Compare at $1,250
IGISave 61.1%1.25ct | Marquise | E | VS1 | Ideal
From $529
Compare at $1,359
IGISave 66.6%1.25ct | Marquise | D | IF | Excellent
From $1,411
Compare at $4,228
IGISave 66.6%1.25ct | Marquise | D | IF | Excellent
From $1,411
Compare at $4,228
IGISave 65.9%1.25ct | Marquise | D | IF | Excellent
From $1,441
Compare at $4,228
GIASave 82.5%1.25ct | Marquise | D | IF | Ideal
From $1,092
Compare at $6,240
IGISave 71.4%1.25ct | Marquise | E | VS1 | Ideal
From $673
Compare at $2,350
IGISave 50.6%1.25ct | Marquise | E | VS1 | Ideal
From $527
Compare at $1,066
IGISave 30%1.25ct | Marquise | E | VS2 | Ideal
From $836
Compare at $1,194
IGISave 34.9%1.25ct | Marquise | E | VS1 | Ideal
From $521
Compare at $800
IGISave 74.4%1.25ct | Marquise | E | IF | Excellent
From $827
Compare at $3,232
IGISave 67.1%1.25ct | Marquise | FANCY | VVS2 | Very Good
From $1,098
Compare at $3,340
IGISave 70.5%1.25ct | Marquise | G | VS2 | Ideal
From $380
Compare at $1,290
IGISave 60.5%1.25ct | Marquise | E | VVS2 | Excellent
From $575
Compare at $1,457
IGISave 76%1.25ct | Marquise | D | VVS2 | Excellent
From $550
Compare at $2,290
IGISave 48.6%1.25ct | Marquise | D | FL | Excellent
From $2,130
Compare at $4,147
IGISave 49.5%1.25ct | Marquise | D | VS1 | Excellent
From $571
Compare at $1,130
IGISave 53.9%1.25ct | Marquise | F | VVS2 | Very Good
From $720
Compare at $1,560
1.25ct | Marquise | D | VVS2 | Very Good
From $653
Compare at $1,350
1.25ct | Marquise | D | IF | Very Good
From $870
Compare at $2,740
IGISave 67.6%1.25ct | Marquise | D | VS1 | Very Good
From $556
Compare at $1,715
IGISave 50.2%1.25ct | Marquise | D | IF | Excellent
From $1,841
Compare at $3,695
IGISave 41.7%1.25ct | Marquise | D | VVS2 | Ideal
From $627
Compare at $1,075
IGISave 35.1%1.25ct | Marquise | E | VS2 | Ideal
From $922
Compare at $1,420
Entry pricing in this category starts around $380.
What to Know When Shopping for 1.3 Carat Marquise Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $3,380 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 $591 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 826 comparable stones in this segment. Prices start around $380 and go up to $3,760.
Based on the latest market data, the average asking price is about $703 with a median around $591.
The observed spread is roughly $3,380 across tracked listings, which is about 89.9% 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 $591, 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 8 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 $3,380 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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