4.1 Carat Marquise Lab Grown Diamond Prices Comparison
As of February 2026, 4.1 carat marquise lab grown diamonds usually range from $813 to $21,303, with an average price of $1,590.In the last month, prices for these diamonds are down 0.1%.Compare 670 verified listings across 9 retailers tracked by CaratRadar.
4.1 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 670 verified 4.1-carat marquise lab grown diamonds listed across 9 online retailers. Prices in this segment range from $813 to $21,303, with an average asking price of $1,590 and a median of $1,035.
The price spread of $20,490 (96.2% 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.
670 diamonds tracked in this segment
Price range: $813 to $21,303
Average price: $1,590
Median price: $1,035
Available across 9 retailers
Savings potential: up to 96.2%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
670
$813
$1,590
$1,035
$21,303
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 82.6%4.05ct | Marquise | D | VS1 | Very Good
From $1,813
Compare at $10,420
IGISave 82%4.05ct | Marquise | G | VS1 | Very Good
From $1,124
Compare at $6,233
IGISave 50.1%4.05ct | Marquise | I | VS2 | Ideal
From $900
Compare at $1,805
IGISave 41.4%4.05ct | Marquise | E | IF | Ideal
From $9,023
Compare at $15,403
IGISave 62.7%4.05ct | Marquise | D | VVS2 | Ideal
From $1,829
Compare at $4,900
IGISave 81.9%4.05ct | Marquise | E | VS2 | Ideal
From $898
Compare at $4,950
IGISave 84.8%4.05ct | Marquise | E | VS1 | Very Good
From $1,499
Compare at $9,850
IGISave 66.6%4.05ct | Marquise | G | VS1 | Very Good
From $1,105
Compare at $3,312
IGISave 76%4.05ct | Marquise | F | VS1 | Ideal
From $1,507
Compare at $6,270
IGISave 72.1%4.05ct | Marquise | F | VS1 | Ideal
From $1,440
Compare at $5,170
IGISave 13.9%4.05ct | Marquise | E | VVS2 | Excellent
From $1,554
Compare at $1,805
GCALSave 70.9%4.05ct | Marquise | F | VS1 | Excellent
From $2,883
Compare at $9,890
IGISave 49.9%4.05ct | Marquise | H | VS2 | Ideal
From $1,000
Compare at $1,996
IGISave 82.5%4.05ct | Marquise | E | VS2 | Ideal
From $898
Compare at $5,140
IGISave 81.9%4.05ct | Marquise | E | VS2 | Ideal
From $898
Compare at $4,950
IGISave 65.8%4.05ct | Marquise | E | SI1 | Ideal
From $830
Compare at $2,428
IGISave 81.9%4.05ct | Marquise | E | VS2 | Ideal
From $898
Compare at $4,950
IGISave 82.9%4.05ct | Marquise | E | VS1 | Ideal
From $956
Compare at $5,590
IGISave 74.2%4.05ct | Marquise | E | VS2 | Ideal
From $1,263
Compare at $4,900
IGISave 83.4%4.05ct | Marquise | E | VS1 | Ideal
From $933
Compare at $5,630
IGISave 83.1%4.05ct | Marquise | E | VS1 | Ideal
From $950
Compare at $5,630
IGISave 74.2%4.05ct | Marquise | E | VS2 | Ideal
From $1,276
Compare at $4,950
IGISave 71.9%4.05ct | Marquise | E | VVS2 | Ideal
From $1,953
Compare at $6,950
IGISave 70.2%4.05ct | Marquise | D | VVS2 | Ideal
From $3,362
Compare at $11,300
IGISave 16.7%4.05ct | Marquise | D | VVS2 | Very Good
From $2,652
Compare at $3,182
IGISave 62.3%4.05ct | Marquise | F | VVS2 | Excellent
From $1,529
Compare at $4,053
IGISave 77.9%4.05ct | Marquise | E | VS1 | Very Good
From $1,365
Compare at $6,190
IGISave 76.3%4.05ct | Marquise | F | VVS2 | Good
From $1,447
Compare at $6,111
IGISave 74.2%4.05ct | Marquise | E | VS2 | Ideal
From $1,263
Compare at $4,900
IGISave 81.8%4.05ct | Marquise | E | VS2 | Ideal
From $891
Compare at $4,900
IGISave 84.6%4.05ct | Marquise | E | VS2 | Ideal
From $891
Compare at $5,800
IGISave 82.9%4.05ct | Marquise | E | VS1 | Ideal
From $956
Compare at $5,590
IGISave 85.4%4.05ct | Marquise | E | VS1 | Ideal
From $1,089
Compare at $7,460
IGISave 83.4%4.05ct | Marquise | E | VS1 | Ideal
From $933
Compare at $5,630
IGISave 81.8%4.05ct | Marquise | E | VS2 | Ideal
From $891
Compare at $4,900
IGISave 51.6%4.05ct | Marquise | D | IF | Ideal
From $18,422
Compare at $38,050
IGISave 17.9%4.05ct | Marquise | F | VS1 | Very Good
From $1,206
Compare at $1,469
IGISave 85%4.05ct | Marquise | D | VS1 | Very Good
From $1,470
Compare at $9,800
IGISave 86%4.05ct | Marquise | D | VVS2 | Very Good
From $1,885
Compare at $13,440
4.05ct | Marquise | G | VS1 | Very Good
From $1,130
Compare at $4,900
IGISave 50.7%4.05ct | Marquise | H | VS2 | Ideal
From $971
Compare at $1,969
IGISave 59.7%4.05ct | Marquise | E | VVS1 | Ideal
From $4,516
Compare at $11,210
IGISave 75.7%4.05ct | Marquise | F | VS1 | Excellent
From $1,252
Compare at $5,146
IGISave 82.5%4.05ct | Marquise | E | VS2 | Ideal
From $898
Compare at $5,140
IGISave 85.5%4.05ct | Marquise | E | VS1 | Ideal
From $1,378
Compare at $9,530
IGISave 82.5%4.05ct | Marquise | E | VS2 | Ideal
From $868
Compare at $4,950
IGISave 82.4%4.05ct | Marquise | E | VS2 | Ideal
From $861
Compare at $4,900
IGISave 84.9%4.05ct | Marquise | E | VVS2 | Excellent
From $1,386
Compare at $9,210
IGISave 84.4%4.05ct | Marquise | G | VVS2 | Ideal
From $1,002
Compare at $6,430
IGISave 58.2%4.05ct | Marquise | G | VS1 | Ideal
From $3,943
Compare at $9,430
Entry pricing in this category starts around $813.
What to Know When Shopping for 4.1 Carat Marquise Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $20,490 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 $1,035 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 670 comparable stones in this segment. Prices start around $813 and go up to $21,303.
Based on the latest market data, the average asking price is about $1,590 with a median around $1,035.
The observed spread is roughly $20,490 across tracked listings, which is about 96.2% 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 $1,035, 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 $20,490 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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