8.3 Carat Round Lab Grown Diamond Prices Comparison
As of April 2026, 8.3 carat round lab grown diamonds usually range from $1,800 to $53,809, with an average price of $10,127.In the last month, prices for these diamonds are up 2.1%.Compare 30 verified listings across 5 retailers tracked by CaratRadar.
8.3 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 30 verified 8.3-carat round lab grown diamonds listed across 5 online retailers. Prices in this segment range from $1,800 to $53,808, with an average asking price of $10,127 and a median of $8,354.
The price spread of $52,008 (96.7% 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.
30 diamonds tracked in this segment
Price range: $1,800 to $53,808
Average price: $10,127
Median price: $8,354
Available across 5 retailers
Savings potential: up to 96.7%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
30
$1,800
$10,127
$8,355
$53,809
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 77.6%IGI | 8.31ct | Round | G | VS2 | Ideal
From $3,314
Compare at $14,800
Save 76.8%IGI | 8.31ct | Round | G | SI1 | Ideal
From $2,667
Compare at $11,510
Save 79.6%IGI | 8.31ct | Round | E | VVS2 | Excellent
From $5,037
Compare at $24,630
Save 80.4%IGI | 8.31ct | Round | F | VS1 | Excellent
From $3,845
Compare at $19,580
Save 77.6%IGI | 8.32ct | Round | G | VS2 | Ideal
From $3,318
Compare at $14,820
Save 76.2%IGI | 8.32ct | Round | F | VS2 | Ideal
From $4,260
Compare at $17,890
Save 49.2%IGI | 8.32ct | Round | D | VVS2 | Ideal
From $14,558
Compare at $28,630
Save 84.7%IGI | 8.32ct | Round | F | VS1 | Excellent
From $3,027
Compare at $19,740
Save 53.7%IGI | 8.32ct | Round | G | VS2 | Excellent
From $6,864
Compare at $14,810
Save 77.1%IGI | 8.33ct | Round | D | VVS2 | Ideal
From $9,015
Compare at $39,400
Save 70.1%IGI | 8.33ct | Round | E | VS1 | Ideal
From $3,854
Compare at $12,890
Save 81.8%IGI | 8.33ct | Round | G | VS2 | Ideal
From $2,702
Compare at $14,830
Save 68%IGI | 8.33ct | Round | D | VS2 | Excellent
From $4,760
Compare at $14,885
Save 86.5%IGI | 8.34ct | Round | F | VS1 | Excellent
From $2,677
Compare at $19,770
Save 82.4%IGI | 8.34ct | Round | F | VS1 | Excellent
From $3,475
Compare at $19,800
Save 79.3%IGI | 8.35ct | Round | E | VVS2 | Ideal
From $5,123
Compare at $24,750
Save 78.5%IGI | 8.36ct | Round | G | VS1 | Ideal
From $3,756
Compare at $17,430
Save 78.5%IGI | 8.36ct | Round | G | VS1 | Ideal
From $3,756
Compare at $17,430
Save 86.5%IGI | 8.36ct | Round | F | VS1 | Ideal
From $2,683
Compare at $19,810
Save 80%IGI | 8.36ct | Round | E | VVS2 | Excellent
From $4,963
Compare at $24,780
Save 80%IGI | 8.37ct | Round | E | VVS2 | Excellent
From $4,969
Compare at $24,810
Save 82.3%IGI | 8.38ct | Round | E | VS1 | Ideal
From $3,840
Compare at $21,700
Save 77.5%GIA | 8.39ct | Round | E | VS1 | Excellent
From $11,034
Compare at $48,940
Save 76%IGI | 8.39ct | Round | E | VS1 | Ideal
From $5,208
Compare at $21,730
Save 82.6%IGI | 8.39ct | Round | E | VVS2 | Ideal
From $4,333
Compare at $24,920
Save 79.3%IGI | 8.4ct | Round | E | VVS2 | Ideal
From $5,154
Compare at $24,900
Save 15.6%IGI | 8.4ct | Round | F | VS1 | Excellent
From $3,153
Compare at $3,734
Save 81%IGI | 8.4ct | Round | F | VVS2 | Excellent
From $4,246
Compare at $22,340
Save 80.4%IGI | 8.4ct | Round | E | VS1 | Excellent
From $4,246
Compare at $21,700
Save 48.5%IGI | 8.4ct | Round | G | VS1 | Excellent
From $2,687
Compare at $5,217
Entry pricing in this category starts around $1,800.
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 $52,008 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 $8,354 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 30 comparable stones in this segment. Prices start around $1,800 and go up to $53,808.
Based on the latest market data, the average asking price is about $10,127 with a median around $8,354.
The observed spread is roughly $52,008 across tracked listings, which is about 96.7% 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 $8,354, 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 $52,008 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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