8.3 Carat Round Lab Grown Diamond Prices Comparison
As of February 2026, 8.3 carat round lab grown diamonds usually range from $2,444 to $22,190, with an average price of $4,544.In the last month, prices for these diamonds are down 2.9%.Compare 42 verified listings across 6 retailers tracked by CaratRadar.
8.3 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 42 verified 8.3-carat round lab grown diamonds listed across 6 online retailers. Prices in this segment range from $2,444 to $22,190, with an average asking price of $4,544 and a median of $3,235.
The price spread of $19,746 (89.0% 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.
42 diamonds tracked in this segment
Price range: $2,444 to $22,190
Average price: $4,544
Median price: $3,235
Available across 6 retailers
Savings potential: up to 89.0%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
42
$2,444
$4,544
$3,235
$22,190
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 62.4%8.25ct | Round | F | VS1 | Excellent
From $2,797
Compare at $7,448
IGISave 62%8.25ct | Round | E | VVS2 | Excellent
From $2,745
Compare at $7,215
IGISave 62.6%8.25ct | Round | E | VS1 | Excellent
From $2,963
Compare at $7,921
IGISave 81.1%8.25ct | Round | G | VS2 | Ideal
From $3,291
Compare at $17,430
IGISave 62.5%8.25ct | Round | F | VVS2 | Excellent
From $2,881
Compare at $7,688
IGISave 83.8%8.25ct | Round | G | VS2 | Ideal
From $2,827
Compare at $17,430
IGISave 83.8%8.26ct | Round | G | VS2 | Ideal
From $2,830
Compare at $17,450
IGISave 81.1%8.26ct | Round | G | VS2 | Ideal
From $3,295
Compare at $17,450
IGISave 64.9%8.26ct | Round | D | VS1 | Excellent
From $5,294
Compare at $15,070
IGISave 55.8%8.26ct | Round | F | VVS2 | Excellent
From $3,464
Compare at $7,838
GIASave 87.4%8.28ct | Round | D | VVS2 | Excellent
From $11,020
Compare at $87,630
IGISave 81.2%8.28ct | Round | D | VVS1 | Ideal
From $22,190
Compare at $118,190
IGISave 81.7%8.28ct | Round | E | VS1 | Ideal
From $3,922
Compare at $21,440
IGISave 62.1%8.28ct | Round | E | VVS2 | Excellent
From $2,922
Compare at $7,719
IGISave 55.8%8.28ct | Round | F | VVS2 | Excellent
From $3,197
Compare at $7,237
IGISave 62.8%8.28ct | Round | E | VVS2 | Excellent
From $3,228
Compare at $8,674
GIASave 62%8.28ct | Round | E | VS2 | Ideal
From $11,026
Compare at $28,980
IGISave 81.1%8.28ct | Round | G | VS2 | Ideal
From $3,303
Compare at $17,490
IGISave 83.8%8.28ct | Round | G | VS2 | Ideal
From $2,836
Compare at $17,490
IGISave 64.8%8.29ct | Round | F | SI1 | Ideal
From $4,128
Compare at $11,720
IGISave 62.4%8.29ct | Round | F | VVS2 | Excellent
From $3,174
Compare at $8,435
IGISave 84.9%8.29ct | Round | E | VS1 | Ideal
From $3,243
Compare at $21,470
IGISave 80.6%8.29ct | Round | F | VS2 | Ideal
From $4,109
Compare at $21,160
IGISave 81.1%8.29ct | Round | G | VS2 | Ideal
From $3,307
Compare at $17,510
IGISave 80.3%8.3ct | Round | F | SI1 | Ideal
From $2,444
Compare at $12,410
IGISave 85.7%8.3ct | Round | E | VVS2 | Ideal
From $3,513
Compare at $24,600
IGISave 80.5%8.31ct | Round | G | SI1 | Ideal
From $2,667
Compare at $13,710
IGISave 73%8.31ct | Round | F | VVS2 | Excellent
From $3,569
Compare at $13,230
IGISave 62.5%8.31ct | Round | E | VVS2 | Excellent
From $2,902
Compare at $7,747
IGI8.31ct | Round | E | VS1 | Ideal
From $14,517
Compare at $15,730
IGISave 62.6%8.31ct | Round | F | VS1 | Excellent
From $2,987
Compare at $7,990
IGISave 84%8.31ct | Round | G | VS2 | Ideal
From $2,816
Compare at $17,560
IGISave 81.1%8.32ct | Round | G | VS2 | Ideal
From $3,318
Compare at $17,570
IGISave 87%8.32ct | Round | F | VS1 | Excellent
From $3,027
Compare at $23,240
IGISave 41.1%8.32ct | Round | G | VS2 | Excellent
From $6,864
Compare at $11,650
IGISave 79.9%8.32ct | Round | F | VS2 | Ideal
From $4,260
Compare at $21,240
IGISave 81%8.33ct | Round | D | VVS2 | Ideal
From $7,955
Compare at $41,800
IGISave 87.7%8.33ct | Round | E | VS1 | Ideal
From $2,651
Compare at $21,520
IGISave 47.2%8.33ct | Round | D | VS2 | Excellent
From $4,760
Compare at $9,013
IGISave 81.6%8.33ct | Round | G | VS2 | Ideal
From $2,696
Compare at $14,680
IGISave 85%8.34ct | Round | F | VS1 | Excellent
From $2,943
Compare at $19,650
IGISave 85%8.34ct | Round | F | VS1 | Excellent
From $2,973
Compare at $19,800
Entry pricing in this category starts around $2,444.
What to Know When Shopping for 8.3 Carat Round Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $19,746 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 $3,235 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.
- Round brilliants command a premium due to higher rough waste during cutting. If budget matters, consider oval or cushion shapes for similar visual size.
Frequently Asked Questions
We currently track 42 comparable stones in this segment. Prices start around $2,444 and go up to $22,190.
Based on the latest market data, the average asking price is about $4,544 with a median around $3,235.
The observed spread is roughly $19,746 across tracked listings, which is about 89.0% 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 $3,235, 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 $19,746 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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