8.3 Carat Marquise Lab Grown Diamond Prices Comparison
As of March 2026, 8.3 carat marquise lab grown diamonds usually range from $1,130 to $3,444, with an average price of $1,960.In the last month, prices for these diamonds are down 2.2%.Compare 43 verified listings across 2 retailers tracked by CaratRadar.
8.3 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 43 verified 8.3-carat marquise lab grown diamonds listed across 2 online retailers. Prices in this segment range from $1,130 to $3,444, with an average asking price of $1,960 and a median of $1,896.
The price spread of $2,314 (67.2% 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.
43 diamonds tracked in this segment
Price range: $1,130 to $3,444
Average price: $1,960
Median price: $1,896
Available across 2 retailers
Savings potential: up to 67.2%
Price Range Overview
As of Mar 1, 2026Real market range for this carat, shape, and diamond type.
43
$1,130
$1,960
$1,896
$3,444
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 92.4%8.25ct | Marquise | F | VVS2 | Ideal
From $1,414
Compare at $18,630
IGISave 88.6%8.25ct | Marquise | E | VS2 | Ideal
From $1,862
Compare at $16,310
IGISave 88.7%8.25ct | Marquise | E | VS1 | Ideal
From $2,120
Compare at $18,810
IGISave 72.1%8.25ct | Marquise | F | VS1 | Excellent
From $1,816
Compare at $6,515
IGI8.25ct | Marquise | E | VS1 | Ideal
From $2,245
Compare at $2,389
IGISave 72.1%8.26ct | Marquise | F | VS1 | Ideal
From $1,818
Compare at $6,525
IGISave 76.7%8.26ct | Marquise | F | VVS2 | Ideal
From $1,887
Compare at $8,090
IGISave 82.5%8.26ct | Marquise | G | VVS2 | Ideal
From $2,899
Compare at $16,600
IGISave 77.1%8.26ct | Marquise | E | VS1 | Ideal
From $2,123
Compare at $9,280
IGISave 76.7%8.26ct | Marquise | F | VVS2 | Ideal
From $1,887
Compare at $8,090
IGISave 77.9%8.27ct | Marquise | G | VS2 | Very Good
From $2,379
Compare at $10,770
IGISave 92.4%8.27ct | Marquise | F | VVS2 | Ideal
From $1,417
Compare at $18,700
IGISave 77.2%8.27ct | Marquise | G | VS1 | Ideal
From $1,821
Compare at $7,980
IGISave 92.4%8.27ct | Marquise | F | VVS2 | Ideal
From $1,417
Compare at $18,680
IGISave 82.5%8.27ct | Marquise | F | VVS2 | Ideal
From $1,417
Compare at $8,100
IGISave 77.5%8.27ct | Marquise | F | VVS2 | Ideal
From $1,896
Compare at $8,435
IGISave 92.4%8.28ct | Marquise | F | VVS2 | Ideal
From $1,418
Compare at $18,720
IGISave 78%8.28ct | Marquise | E | VVS2 | Ideal
From $2,226
Compare at $10,110
IGISave 72.1%8.28ct | Marquise | F | VS1 | Ideal
From $1,823
Compare at $6,540
IGISave 91.9%8.28ct | Marquise | F | VS1 | Excellent
From $1,389
Compare at $17,100
IGISave 85.4%8.28ct | Marquise | E | VS1 | Ideal
From $2,151
Compare at $14,760
IGISave 84.3%8.29ct | Marquise | G | VS1 | Ideal
From $1,878
Compare at $11,940
IGISave 71%8.29ct | Marquise | F | VS1 | Ideal
From $1,825
Compare at $6,300
IGISave 86.1%8.29ct | Marquise | E | VS1 | Very Good
From $2,154
Compare at $15,460
IGISave 83.9%8.3ct | Marquise | F | VS1 | Excellent
From $2,746
Compare at $17,070
IGISave 77.1%8.31ct | Marquise | E | VS1 | Ideal
From $2,113
Compare at $9,230
IGISave 72.1%8.31ct | Marquise | F | VS1 | Ideal
From $1,829
Compare at $6,560
IGISave 77.1%8.31ct | Marquise | E | VS1 | Ideal
From $2,113
Compare at $9,230
IGISave 77.1%8.32ct | Marquise | E | VS1 | Ideal
From $2,115
Compare at $9,240
IGISave 81.8%8.32ct | Marquise | F | VVS2 | Very Good
From $3,033
Compare at $16,670
IGISave 92.4%8.32ct | Marquise | F | VVS2 | Excellent
From $1,424
Compare at $18,810
IGISave 82.8%8.33ct | Marquise | F | VS1 | Excellent
From $2,757
Compare at $16,030
IGISave 85.2%8.33ct | Marquise | G | SI1 | Ideal
From $1,130
Compare at $7,610
IGISave 89.1%8.33ct | Marquise | E | VS1 | Excellent
From $2,141
Compare at $19,670
IGISave 76.6%8.33ct | Marquise | F | VVS2 | Ideal
From $1,910
Compare at $8,160
IGISave 76.6%8.34ct | Marquise | F | VVS2 | Ideal
From $1,912
Compare at $8,170
IGISave 77.5%8.34ct | Marquise | F | VVS2 | Ideal
From $1,912
Compare at $8,505
IGISave 92.4%8.34ct | Marquise | F | VVS2 | Ideal
From $1,427
Compare at $18,860
IGISave 85.4%8.34ct | Marquise | F | VVS1 | Excellent
From $3,444
Compare at $23,590
IGISave 90.2%8.34ct | Marquise | F | VS2 | Ideal
From $1,269
Compare at $12,990
IGISave 84.1%8.34ct | Marquise | E | VS1 | Excellent
From $2,143
Compare at $13,470
IGISave 82.4%8.34ct | Marquise | F | VVS2 | Ideal
From $1,442
Compare at $8,170
IGISave 84.9%8.34ct | Marquise | E | VS1 | Ideal
From $2,143
Compare at $14,160
Entry pricing in this category starts around $1,130.
What to Know When Shopping for 8.3 Carat Marquise Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $2,314 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 $1,896 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 43 comparable stones in this segment. Prices start around $1,130 and go up to $3,444.
Based on the latest market data, the average asking price is about $1,960 with a median around $1,896.
The observed spread is roughly $2,314 across tracked listings, which is about 67.2% 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 $1,896, 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 2 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 $2,314 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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