8.1 Carat Marquise Lab Grown Diamond Prices Comparison
As of April 2026, 8.1 carat marquise lab grown diamonds usually range from $765 to $21,987, with an average price of $5,209.In the last month, prices for these diamonds are down 0.7%.Compare 74 verified listings across 5 retailers tracked by CaratRadar.
8.1 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 74 verified 8.1-carat marquise lab grown diamonds listed across 5 online retailers. Prices in this segment range from $765 to $21,986, with an average asking price of $5,209 and a median of $3,720.
The price spread of $21,222 (96.5% 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.
74 diamonds tracked in this segment
Price range: $765 to $21,986
Average price: $5,209
Median price: $3,720
Available across 5 retailers
Savings potential: up to 96.5%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
74
$765
$5,209
$3,721
$21,987
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 59.3%IGI | 8.1ct | Marquise | E | VVS2 | Ideal
From $4,017
Compare at $9,870
Save 86.2%IGI | 8.1ct | Marquise | E | VS2 | Ideal
From $1,764
Compare at $12,790
Save 80.6%IGI | 8.1ct | Marquise | E | VVS2 | Ideal
From $3,394
Compare at $17,504
Save 89.1%IGI | 8.1ct | Marquise | F | VS1 | Ideal
From $1,810
Compare at $16,660
Save 58.6%IGI | 8.1ct | Marquise | E | VVS2 | Ideal
From $7,250
Compare at $17,504
Save 55.6%IGI | 8.1ct | Marquise | G | VS2 | Excellent
From $1,529
Compare at $3,441
Save 77.1%IGI | 8.1ct | Marquise | F | VVS2 | Ideal
From $1,880
Compare at $8,210
Save 80.6%IGI | 8.1ct | Marquise | F | VVS2 | Ideal
From $3,542
Compare at $18,250
Save 73.4%IGI | 8.1ct | Marquise | F | VVS2 | Excellent
From $4,860
Compare at $18,250
Save 85.9%IGI | 8.1ct | Marquise | F | VVS2 | Very Good
From $2,594
Compare at $18,390
Save 75.9%IGI | 8.11ct | Marquise | E | VS2 | Ideal
From $1,861
Compare at $7,720
Save 76.8%IGI | 8.11ct | Marquise | F | VVS2 | Ideal
From $1,950
Compare at $8,420
Save 76.9%IGI | 8.11ct | Marquise | F | VVS2 | Ideal
From $1,837
Compare at $7,945
Save 77.1%IGI | 8.11ct | Marquise | E | VVS2 | Ideal
From $2,152
Compare at $9,410
Save 72.1%IGI | 8.12ct | Marquise | G | SI1 | Ideal
From $2,080
Compare at $7,460
Save 77.2%IGI | 8.12ct | Marquise | F | SI1 | Ideal
From $3,006
Compare at $13,170
Save 79.3%IGI | 8.12ct | Marquise | G | VS2 | Ideal
From $2,194
Compare at $10,600
Save 77%IGI | 8.12ct | Marquise | F | VVS2 | Ideal
From $1,893
Compare at $8,230
Save 76.8%IGI | 8.12ct | Marquise | E | VS1 | Ideal
From $1,952
Compare at $8,430
Save 76.9%IGI | 8.12ct | Marquise | F | VVS2 | Ideal
From $1,839
Compare at $7,955
Save 89.5%IGI | 8.12ct | Marquise | F | VS1 | Ideal
From $1,768
Compare at $16,770
Save 87.2%IGI | 8.12ct | Marquise | E | VS2 | Ideal
From $1,792
Compare at $14,030
Save 28.6%IGI | 8.12ct | Marquise | H | VS2 | Ideal
From $1,483
Compare at $2,078
Save 85.2%IGI | 8.13ct | Marquise | F | VVS2 | Excellent
From $2,725
Compare at $18,440
Save 71.7%IGI | 8.13ct | Marquise | F | VS1 | Ideal
From $1,746
Compare at $6,175
Save 89%IGI | 8.13ct | Marquise | F | VVS2 | Ideal
From $1,842
Compare at $16,760
Save 88.3%IGI | 8.13ct | Marquise | E | VS2 | Ideal
From $1,794
Compare at $15,270
Save 89.5%IGI | 8.13ct | Marquise | F | VVS2 | Ideal
From $1,842
Compare at $17,460
Save 77.1%IGI | 8.13ct | Marquise | E | VVS2 | Ideal
From $2,157
Compare at $9,430
Save 87.8%IGI | 8.13ct | Marquise | E | VS2 | Ideal
From $1,794
Compare at $14,660
Save 75.8%IGI | 8.14ct | Marquise | E | VS1 | Excellent
From $4,195
Compare at $17,310
Save 71.7%IGI | 8.14ct | Marquise | F | VS1 | Ideal
From $1,749
Compare at $6,185
Save 72.4%IGI | 8.14ct | Marquise | F | VS1 | Ideal
From $1,772
Compare at $6,430
Save 77.1%IGI | 8.14ct | Marquise | E | VVS2 | Ideal
From $2,160
Compare at $9,440
Save 76.9%IGI | 8.14ct | Marquise | F | VVS2 | Excellent
From $1,844
Compare at $7,975
Save 71.3%IGI | 8.14ct | Marquise | F | VS1 | Excellent
From $1,772
Compare at $6,185
Save 90%IGI | 8.14ct | Marquise | F | VVS2 | Ideal
From $1,844
Compare at $18,410
Save 71.3%IGI | 8.14ct | Marquise | F | VS1 | Excellent
From $1,772
Compare at $6,185
Save 75.9%IGI | 8.15ct | Marquise | G | VS1 | Ideal
From $1,775
Compare at $7,360
Save 75.6%IGI | 8.15ct | Marquise | G | VS1 | Ideal
From $1,775
Compare at $7,260
Save 76.9%IGI | 8.15ct | Marquise | E | VVS2 | Ideal
From $2,185
Compare at $9,450
Save 90%IGI | 8.15ct | Marquise | F | VVS2 | Ideal
From $1,846
Compare at $18,430
Save 90%IGI | 8.15ct | Marquise | F | VVS2 | Ideal
From $1,846
Compare at $18,430
Save 76.9%IGI | 8.15ct | Marquise | F | VVS2 | Ideal
From $1,846
Compare at $7,985
Save 64.8%IGI | 8.15ct | Marquise | F | VS2 | Very Good
From $2,233
Compare at $6,343
Save 54.2%IGI | 8.16ct | Marquise | G | VS2 | Excellent
From $1,777
Compare at $3,876
Save 84%IGI | 8.16ct | Marquise | H | VVS2 | Ideal
From $2,180
Compare at $13,590
Save 77.1%IGI | 8.16ct | Marquise | E | VVS2 | Ideal
From $2,143
Compare at $9,370
Save 82.5%IGI | 8.16ct | Marquise | G | VVS2 | Ideal
From $1,842
Compare at $10,550
Save 90%IGI | 8.16ct | Marquise | F | VVS2 | Ideal
From $1,848
Compare at $18,450
Entry pricing in this category starts around $765.
What to Know When Shopping for 8.1 Carat Marquise Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $21,222 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 $3,720 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 74 comparable stones in this segment. Prices start around $765 and go up to $21,986.
Based on the latest market data, the average asking price is about $5,209 with a median around $3,720.
The observed spread is roughly $21,222 across tracked listings, which is about 96.5% 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 $3,720, 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 5 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 $21,222 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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