10.3 Carat Round Lab Grown Diamond Prices Comparison
As of March 2026, 10.3 carat round lab grown diamonds usually range from $3,018 to $27,974, with an average price of $7,440.In the last month, prices for these diamonds are down 2.3%.Compare 23 verified listings across 5 retailers tracked by CaratRadar.
10.3 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 23 verified 10.3-carat round lab grown diamonds listed across 5 online retailers. Prices in this segment range from $3,018 to $27,974, with an average asking price of $7,440 and a median of $6,353.
The price spread of $24,956 (89.2% 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.
23 diamonds tracked in this segment
Price range: $3,018 to $27,974
Average price: $7,440
Median price: $6,353
Available across 5 retailers
Savings potential: up to 89.2%
Price Range Overview
As of Mar 1, 2026Real market range for this carat, shape, and diamond type.
23
$3,018
$7,440
$6,353
$27,974
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 58.8%10.25ct | Round | F | SI1 | Ideal
From $6,294
Compare at $15,260
IGISave 87.4%10.25ct | Round | G | VVS2 | Excellent
From $3,018
Compare at $23,940
IGI10.25ct | Round | G | VS1 | Excellent
From $3,956
Compare at $4,359
IGISave 59%10.25ct | Round | F | VVS2 | Excellent
From $3,689
Compare at $8,998
10.26ct | Round | G | VS2 | Ideal
From $3,701
Compare at $18,140
IGISave 14.2%10.26ct | Round | F | VS1 | Excellent
From $4,804
Compare at $5,599
IGISave 84.7%10.27ct | Round | E | VS1 | Ideal
From $4,445
Compare at $29,030
IGISave 64.9%10.27ct | Round | H | VS1 | Ideal
From $6,524
Compare at $18,590
IGISave 12.3%10.27ct | Round | E | VS1 | Ideal
From $27,974
Compare at $31,890
IGISave 29.6%10.27ct | Round | G | VS1 | Excellent
From $8,785
Compare at $12,470
IGISave 77.5%10.27ct | Round | F | VS2 | Ideal
From $5,024
Compare at $22,330
10.28ct | Round | F | VVS2 | Ideal
From $6,353
Compare at $42,710
10.29ct | Round | G | VS1 | Ideal
From $4,166
Compare at $21,410
IGISave 82.2%10.29ct | Round | E | VS1 | Ideal
From $4,453
Compare at $24,990
IGISave 72.7%10.3ct | Round | E | VS1 | Ideal
From $6,578
Compare at $24,090
10.3ct | Round | F | VS2 | Ideal
From $10,300
Compare at $21,790
IGISave 61.6%10.31ct | Round | G | VS1 | Ideal
From $8,959
Compare at $23,340
IGISave 83.8%10.31ct | Round | D | VS1 | Ideal
From $7,905
Compare at $48,840
IGISave 64.3%10.32ct | Round | E | VS1 | Ideal
From $8,206
Compare at $22,990
IGISave 83.8%10.32ct | Round | D | VS1 | Ideal
From $7,912
Compare at $48,890
IGISave 58.8%10.32ct | Round | F | SI1 | Ideal
From $6,336
Compare at $15,360
10.32ct | Round | FANCY | VS1 | Ideal
From $13,802
Compare at $45,079
IGISave 83.8%10.34ct | Round | D | VS1 | Ideal
From $7,926
Compare at $48,980
Entry pricing in this category starts around $3,018.
What to Know When Shopping for 10.3 Carat Round Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $24,956 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 $6,353 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 23 comparable stones in this segment. Prices start around $3,018 and go up to $27,974.
Based on the latest market data, the average asking price is about $7,440 with a median around $6,353.
The observed spread is roughly $24,956 across tracked listings, which is about 89.2% 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 $6,353, 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 $24,956 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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