10.3 Carat Radiant Lab Grown Diamond Prices Comparison
As of March 2026, 10.3 carat radiant lab grown diamonds usually range from $1,809 to $21,930, with an average price of $4,029.In the last month, prices for these diamonds are down 3%.Compare 109 verified listings across 6 retailers tracked by CaratRadar.
10.3 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 109 verified 10.3-carat radiant lab grown diamonds listed across 6 online retailers. Prices in this segment range from $1,809 to $21,930, with an average asking price of $4,029 and a median of $3,428.
The price spread of $20,121 (91.8% 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.
109 diamonds tracked in this segment
Price range: $1,809 to $21,930
Average price: $4,029
Median price: $3,428
Available across 6 retailers
Savings potential: up to 91.8%
Price Range Overview
As of Mar 1, 2026Real market range for this carat, shape, and diamond type.
109
$1,809
$4,029
$3,428
$21,930
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 86.1%10.25ct | Radiant | F | VS1 | Ideal
From $2,954
Compare at $21,190
IGISave 71.8%10.25ct | Radiant | F | VS1 | Very Good
From $3,011
Compare at $10,660
IGISave 52.3%10.25ct | Radiant | G | VVS2 | Very Good
From $2,826
Compare at $5,927
IGISave 66.8%10.25ct | Radiant | E | VVS2 | Ideal
From $4,966
Compare at $14,965
IGISave 51.2%10.25ct | Radiant | E | VS1 | Ideal
From $12,505
Compare at $25,600
IGISave 81.5%10.25ct | Radiant | E | VVS2 | Ideal
From $2,402
Compare at $13,000
IGISave 81.5%10.25ct | Radiant | E | VVS2 | Ideal
From $2,402
Compare at $13,000
IGISave 82.1%10.25ct | Radiant | F | VVS2 | Ideal
From $3,672
Compare at $20,540
IGISave 91.1%10.25ct | Radiant | G | VVS2 | Excellent
From $1,809
Compare at $20,240
IGISave 54.2%10.25ct | Radiant | F | VVS2 | Ideal
From $3,039
Compare at $6,639
IGISave 81.5%10.26ct | Radiant | E | VVS2 | Ideal
From $2,421
Compare at $13,110
IGISave 76.5%10.26ct | Radiant | F | VVS2 | Ideal
From $3,042
Compare at $12,925
IGISave 76.3%10.26ct | Radiant | E | VVS2 | Ideal
From $3,546
Compare at $14,975
IGISave 76.5%10.26ct | Radiant | F | VVS2 | Ideal
From $3,042
Compare at $12,925
IGISave 69.6%10.26ct | Radiant | F | VS1 | Ideal
From $3,428
Compare at $11,270
IGISave 83.7%10.26ct | Radiant | F | VVS2 | Ideal
From $2,107
Compare at $12,925
IGISave 76.5%10.26ct | Radiant | F | VVS2 | Ideal
From $3,042
Compare at $12,925
IGISave 58.1%10.26ct | Radiant | I | VS1 | Ideal
From $5,077
Compare at $12,125
IGISave 81.5%10.26ct | Radiant | E | VVS2 | Ideal
From $2,404
Compare at $13,010
IGISave 81.5%10.26ct | Radiant | E | VVS2 | Ideal
From $2,404
Compare at $13,010
IGISave 81.5%10.26ct | Radiant | E | VVS2 | Ideal
From $2,404
Compare at $13,010
IGISave 81.1%10.26ct | Radiant | F | VVS2 | Ideal
From $2,074
Compare at $10,970
IGISave 49.7%10.26ct | Radiant | F | VS1 | Ideal
From $10,670
Compare at $21,210
IGISave 68.8%10.26ct | Radiant | F | VVS2 | Ideal
From $4,039
Compare at $12,925
IGISave 84.8%10.27ct | Radiant | E | VS1 | Ideal
From $3,887
Compare at $25,580
IGISave 84.1%10.27ct | Radiant | F | VVS2 | Ideal
From $3,643
Compare at $22,890
IGISave 68.8%10.27ct | Radiant | F | VVS2 | Ideal
From $4,042
Compare at $12,940
IGISave 62.9%10.27ct | Radiant | F | VS1 | Ideal
From $3,965
Compare at $10,680
IGISave 68.8%10.27ct | Radiant | F | VVS2 | Ideal
From $4,042
Compare at $12,940
IGISave 86.1%10.27ct | Radiant | G | VS1 | Ideal
From $2,525
Compare at $18,190
IGISave 68.8%10.27ct | Radiant | F | VVS2 | Very Good
From $4,042
Compare at $12,940
IGISave 69.6%10.27ct | Radiant | F | VVS2 | Ideal
From $3,490
Compare at $11,480
IGISave 81.3%10.27ct | Radiant | F | VVS2 | Ideal
From $2,060
Compare at $11,000
IGISave 75%10.27ct | Radiant | G | VS1 | Ideal
From $4,546
Compare at $18,190
IGISave 81%10.28ct | Radiant | F | VVS2 | Ideal
From $2,012
Compare at $10,600
IGISave 77.6%10.28ct | Radiant | FANCY | VVS2 | Excellent
From $6,857
Compare at $30,616
IGISave 81.5%10.28ct | Radiant | E | VVS2 | Ideal
From $2,392
Compare at $12,940
IGISave 76.5%10.28ct | Radiant | F | VVS2 | Ideal
From $3,048
Compare at $12,950
IGISave 62.9%10.28ct | Radiant | F | VS1 | Ideal
From $3,969
Compare at $10,690
IGISave 52.4%10.28ct | Radiant | H | VS2 | Ideal
From $5,043
Compare at $10,593
IGISave 87%10.28ct | Radiant | G | VS1 | Excellent
From $2,348
Compare at $18,120
IGISave 86.2%10.28ct | Radiant | F | VVS2 | Excellent
From $3,179
Compare at $23,040
IGISave 81.9%10.28ct | Radiant | G | VS1 | Ideal
From $3,480
Compare at $19,270
GIASave 74%10.28ct | Radiant | F | VS2 | Very Good
From $9,756
Compare at $37,522
IGISave 81.5%10.28ct | Radiant | E | VVS2 | Ideal
From $2,409
Compare at $13,040
IGISave 81.5%10.28ct | Radiant | E | VVS2 | Ideal
From $2,409
Compare at $13,040
IGISave 64.9%10.28ct | Radiant | E | VS1 | Ideal
From $4,027
Compare at $11,480
IGISave 76.5%10.28ct | Radiant | F | VVS2 | Ideal
From $3,048
Compare at $12,950
IGISave 76.3%10.29ct | Radiant | E | VVS2 | Ideal
From $3,556
Compare at $15,020
IGISave 81.5%10.29ct | Radiant | E | VVS2 | Ideal
From $2,411
Compare at $13,050
Entry pricing in this category starts around $1,809.
What to Know When Shopping for 10.3 Carat Radiant Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $20,121 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 $3,428 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.
- Radiant cuts combine the elegance of emerald shapes with the brilliance of round cuts, offering good value per carat.
Frequently Asked Questions
We currently track 109 comparable stones in this segment. Prices start around $1,809 and go up to $21,930.
Based on the latest market data, the average asking price is about $4,029 with a median around $3,428.
The observed spread is roughly $20,121 across tracked listings, which is about 91.8% 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 $3,428, 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 $20,121 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.
Related Price Categories
Explore adjacent carat ranges and shapes to compare market shifts.
10.2 Carat Radiant Lab Grown Diamond Prices
10.4 Carat Radiant Lab Grown Diamond Prices
10.1 Carat Radiant Lab Grown Diamond Prices
10.5 Carat Radiant Lab Grown Diamond Prices
10 Carat Radiant Lab Grown Diamond Prices
10.6 Carat Radiant Lab Grown Diamond Prices
9.9 Carat Radiant Lab Grown Diamond Prices
10.3 Carat Emerald Lab Grown Diamond Prices
10.3 Carat Oval Lab Grown Diamond Prices
10.3 Carat Cushion Lab Grown Diamond Prices
10.3 Carat Pear Lab Grown Diamond Prices
10.3 Carat Marquise Lab Grown Diamond Prices
Tracking Lab Grown inventory for 10.3 carat Radiant diamonds.