8.1 Carat Marquise Lab Grown Diamond Prices Comparison
As of February 2026, 8.1 carat marquise lab grown diamonds usually range from $1,339 to $7,250, with an average price of $2,270.In the last month, prices for these diamonds are down 0.9%.Compare 113 verified listings across 6 retailers tracked by CaratRadar.
8.1 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 113 verified 8.1-carat marquise lab grown diamonds listed across 6 online retailers. Prices in this segment range from $1,339 to $7,250, with an average asking price of $2,270 and a median of $1,853.
The price spread of $5,911 (81.5% 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.
113 diamonds tracked in this segment
Price range: $1,339 to $7,250
Average price: $2,270
Median price: $1,853
Available across 6 retailers
Savings potential: up to 81.5%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
113
$1,339
$2,270
$1,853
$7,250
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 87%8.06ct | Marquise | G | VS1 | Very Good
From $2,209
Compare at $17,010
IGISave 78.9%8.06ct | Marquise | E | VS2 | Excellent
From $3,355
Compare at $15,930
IGISave 90.1%8.06ct | Marquise | G | VVS2 | Ideal
From $1,592
Compare at $16,090
IGISave 83.7%8.06ct | Marquise | F | VVS2 | Ideal
From $1,428
Compare at $8,760
IGISave 83.5%8.06ct | Marquise | F | VVS2 | Ideal
From $1,441
Compare at $8,760
IGISave 43.4%8.06ct | Marquise | G | VVS2 | Very Good
From $1,592
Compare at $2,812
IGISave 50.4%8.06ct | Marquise | E | VVS2 | Ideal
From $4,591
Compare at $9,260
IGISave 86.4%8.06ct | Marquise | F | VS1 | Ideal
From $2,275
Compare at $16,680
IGISave 91.7%8.06ct | Marquise | F | VS1 | Ideal
From $1,376
Compare at $16,580
IGISave 83.3%8.06ct | Marquise | F | VS1 | Ideal
From $1,892
Compare at $11,320
IGISave 89%8.06ct | Marquise | G | VS1 | Ideal
From $1,873
Compare at $17,010
IGISave 67.3%8.07ct | Marquise | F | VVS2 | Ideal
From $5,955
Compare at $18,230
IGISave 91.7%8.07ct | Marquise | F | VS1 | Ideal
From $1,378
Compare at $16,600
IGISave 91.7%8.07ct | Marquise | F | VS1 | Ideal
From $1,378
Compare at $16,600
IGISave 83.5%8.07ct | Marquise | F | VVS2 | Ideal
From $1,443
Compare at $8,770
IGISave 91.7%8.07ct | Marquise | F | VS1 | Ideal
From $1,378
Compare at $16,600
IGISave 83.5%8.07ct | Marquise | F | VVS2 | Ideal
From $1,443
Compare at $8,770
IGISave 88.8%8.07ct | Marquise | E | VS2 | Ideal
From $1,339
Compare at $11,960
IGISave 90.1%8.07ct | Marquise | E | VS1 | Ideal
From $1,989
Compare at $20,110
IGISave 83.9%8.07ct | Marquise | F | VVS2 | Ideal
From $1,443
Compare at $8,950
IGISave 89.8%8.07ct | Marquise | F | VVS2 | Very Good
From $2,044
Compare at $20,090
IGISave 55.2%8.07ct | Marquise | G | VS1 | Very Good
From $1,731
Compare at $3,863
IGISave 72.5%8.07ct | Marquise | F | VVS2 | Very Good
From $5,922
Compare at $21,540
IGISave 88.4%8.07ct | Marquise | G | VS2 | Ideal
From $1,794
Compare at $15,500
IGISave 71.4%8.07ct | Marquise | E | VVS2 | Ideal
From $2,651
Compare at $9,280
IGISave 87.7%8.07ct | Marquise | G | VVS2 | Ideal
From $1,352
Compare at $11,000
IGISave 91.6%8.07ct | Marquise | F | VS1 | Ideal
From $1,391
Compare at $16,600
IGISave 88.5%8.07ct | Marquise | F | VS2 | Ideal
From $1,339
Compare at $11,630
IGISave 50.5%8.07ct | Marquise | E | VVS2 | Ideal
From $4,596
Compare at $9,280
IGISave 84%8.08ct | Marquise | F | VVS2 | Ideal
From $1,431
Compare at $8,960
IGISave 83.9%8.08ct | Marquise | F | VS1 | Ideal
From $1,392
Compare at $8,660
IGISave 83.9%8.08ct | Marquise | F | VVS2 | Ideal
From $1,444
Compare at $8,960
IGISave 71.5%8.08ct | Marquise | E | VVS2 | Ideal
From $2,654
Compare at $9,300
IGISave 91.7%8.08ct | Marquise | F | VS1 | Ideal
From $1,379
Compare at $16,620
IGISave 47.5%8.08ct | Marquise | E | VS1 | Ideal
From $4,659
Compare at $8,870
IGISave 91.7%8.08ct | Marquise | F | VS1 | Ideal
From $1,379
Compare at $16,620
IGISave 91.1%8.08ct | Marquise | F | VS1 | Ideal
From $1,474
Compare at $16,620
IGISave 89.2%8.08ct | Marquise | E | VS2 | Ideal
From $1,353
Compare at $12,500
IGISave 90.3%8.08ct | Marquise | F | VVS2 | Ideal
From $1,773
Compare at $18,200
IGISave 67.7%8.08ct | Marquise | F | VS2 | Excellent
From $4,606
Compare at $14,250
IGISave 74.3%8.09ct | Marquise | E | VS1 | Very Good
From $5,936
Compare at $23,130
IGISave 80.3%8.09ct | Marquise | E | VVS2 | Ideal
From $3,986
Compare at $20,270
IGISave 77.6%8.09ct | Marquise | F | VVS2 | Ideal
From $2,012
Compare at $8,970
IGISave 18.2%8.09ct | Marquise | F | VVS2 | Ideal
From $2,194
Compare at $2,682
IGISave 47.5%8.09ct | Marquise | F | VVS2 | Ideal
From $4,535
Compare at $8,630
IGISave 47.5%8.09ct | Marquise | E | VS1 | Ideal
From $4,665
Compare at $8,880
IGISave 47.5%8.09ct | Marquise | E | VS1 | Ideal
From $4,665
Compare at $8,880
IGISave 91.7%8.09ct | Marquise | F | VS1 | Ideal
From $1,381
Compare at $16,640
IGISave 72.6%8.09ct | Marquise | F | VS1 | Very Good
From $1,935
Compare at $7,062
IGISave 48.9%8.09ct | Marquise | F | VS1 | Ideal
From $2,369
Compare at $4,633
Entry pricing in this category starts around $1,339.
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 $5,911 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 $1,853 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 113 comparable stones in this segment. Prices start around $1,339 and go up to $7,250.
Based on the latest market data, the average asking price is about $2,270 with a median around $1,853.
The observed spread is roughly $5,911 across tracked listings, which is about 81.5% 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 $1,853, 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 6 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 $5,911 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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