1.4 Carat Marquise Lab Grown Diamond Prices Comparison
As of February 2026, 1.4 carat marquise lab grown diamonds usually range from $396 to $3,460, with an average price of $721.In the last month, prices for these diamonds are down 0.2%.Compare 785 verified listings across 8 retailers tracked by CaratRadar.
1.4 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 785 verified 1.4-carat marquise lab grown diamonds listed across 8 online retailers. Prices in this segment range from $396 to $3,460, with an average asking price of $721 and a median of $612.
The price spread of $3,064 (88.6% 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.
785 diamonds tracked in this segment
Price range: $396 to $3,460
Average price: $721
Median price: $612
Available across 8 retailers
Savings potential: up to 88.6%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
785
$396
$721
$612
$3,460
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
GCALSave 34.1%1.36ct | Marquise | F | VS1 | Excellent
From $597
Compare at $905
IGISave 42.2%1.36ct | Marquise | D | VS2 | Ideal
From $1,162
Compare at $2,010
IGISave 42.3%1.36ct | Marquise | E | VS2 | Ideal
From $1,108
Compare at $1,920
IGISave 42.3%1.36ct | Marquise | E | VS2 | Ideal
From $1,108
Compare at $1,920
IGISave 44%1.36ct | Marquise | E | VS1 | Ideal
From $1,210
Compare at $2,160
IGISave 72.7%1.36ct | Marquise | D | VVS2 | Excellent
From $656
Compare at $2,400
IGISave 71.6%1.36ct | Marquise | G | SI1 | Ideal
From $426
Compare at $1,500
IGISave 65.3%1.36ct | Marquise | G | VS1 | Excellent
From $419
Compare at $1,210
IGISave 74.2%1.36ct | Marquise | E | VVS2 | Excellent
From $542
Compare at $2,100
IGISave 64%1.36ct | Marquise | E | VS1 | Ideal
From $576
Compare at $1,600
IGISave 74.7%1.36ct | Marquise | E | VS1 | Very Good
From $1,091
Compare at $4,320
IGISave 42.3%1.36ct | Marquise | E | VS2 | Ideal
From $1,108
Compare at $1,920
IGISave 75.6%1.36ct | Marquise | D | VVS2 | Excellent
From $606
Compare at $2,485
IGISave 69.4%1.36ct | Marquise | E | VS2 | Ideal
From $505
Compare at $1,650
GCALSave 76.4%1.36ct | Marquise | D | IF | Excellent
From $1,809
Compare at $7,660
IGISave 27.6%1.36ct | Marquise | E | VS1 | Excellent
From $597
Compare at $825
IGISave 20.6%1.36ct | Marquise | E | VS1 | Excellent
From $581
Compare at $731
IGISave 66.6%1.36ct | Marquise | F | VS1 | Excellent
From $541
Compare at $1,620
IGISave 69.7%1.36ct | Marquise | D | VVS2 | Very Good
From $739
Compare at $2,440
1.36ct | Marquise | D | VS1 | Very Good
From $592
Compare at $2,120
IGISave 72.6%1.36ct | Marquise | D | VVS2 | Ideal
From $675
Compare at $2,460
IGISave 71.4%1.36ct | Marquise | E | VVS2 | Ideal
From $592
Compare at $2,070
IGISave 68.4%1.36ct | Marquise | E | VVS2 | Excellent
From $679
Compare at $2,150
IGISave 62.4%1.36ct | Marquise | G | VS1 | Excellent
From $425
Compare at $1,130
IGISave 61.4%1.36ct | Marquise | E | VS1 | Very Good
From $521
Compare at $1,350
IGISave 68.8%1.36ct | Marquise | F | VVS2 | Very Good
From $587
Compare at $1,880
IGISave 71.7%1.36ct | Marquise | E | VVS2 | Excellent
From $591
Compare at $2,090
IGISave 50.9%1.36ct | Marquise | D | VS1 | Ideal
From $598
Compare at $1,218
IGISave 66.1%1.36ct | Marquise | D | VVS2 | Ideal
From $661
Compare at $1,950
IGISave 70.3%1.36ct | Marquise | D | VVS2 | Excellent
From $739
Compare at $2,485
IGISave 53.5%1.36ct | Marquise | D | IF | Excellent
From $1,829
Compare at $3,934
IGISave 55.1%1.36ct | Marquise | E | VVS2 | Excellent
From $597
Compare at $1,330
IGISave 56.2%1.36ct | Marquise | E | VS1 | Excellent
From $565
Compare at $1,292
IGISave 60.8%1.36ct | Marquise | D | VVS1 | Very Good
From $922
Compare at $2,354
IGISave 59.4%1.36ct | Marquise | E | VS1 | Excellent
From $591
Compare at $1,458
IGISave 26.9%1.36ct | Marquise | E | VS1 | Excellent
From $603
Compare at $825
IGISave 53.7%1.36ct | Marquise | D | IF | Ideal
From $1,827
Compare at $3,950
IGISave 73.3%1.36ct | Marquise | E | VVS2 | Excellent
From $574
Compare at $2,150
IGISave 73.2%1.36ct | Marquise | E | VVS1 | Excellent
From $606
Compare at $2,259
IGISave 22.2%1.36ct | Marquise | E | VS2 | Excellent
From $591
Compare at $760
IGISave 72.3%1.36ct | Marquise | E | VVS2 | Ideal
From $574
Compare at $2,070
IGISave 67.1%1.36ct | Marquise | F | VVS2 | Excellent
From $547
Compare at $1,660
IGISave 66.5%1.36ct | Marquise | G | VS1 | Ideal
From $419
Compare at $1,250
IGISave 68.8%1.36ct | Marquise | D | VVS1 | Ideal
From $715
Compare at $2,290
IGISave 75.8%1.36ct | Marquise | E | VVS2 | Ideal
From $508
Compare at $2,100
IGISave 67.6%1.36ct | Marquise | D | VS2 | Excellent
From $519
Compare at $1,600
IGISave 71.1%1.36ct | Marquise | G | VVS2 | Ideal
From $419
Compare at $1,450
IGISave 44%1.36ct | Marquise | E | VS1 | Ideal
From $1,210
Compare at $2,160
IGISave 42.3%1.36ct | Marquise | E | VS2 | Ideal
From $1,108
Compare at $1,920
IGISave 42.2%1.36ct | Marquise | D | VS2 | Ideal
From $1,162
Compare at $2,010
Entry pricing in this category starts around $396.
What to Know When Shopping for 1.4 Carat Marquise Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $3,064 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 $612 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 785 comparable stones in this segment. Prices start around $396 and go up to $3,460.
Based on the latest market data, the average asking price is about $721 with a median around $612.
The observed spread is roughly $3,064 across tracked listings, which is about 88.6% 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 $612, 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 $3,064 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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