4 Carat Radiant Lab Grown Diamond Prices Comparison
As of February 2026, 4 carat radiant lab grown diamonds usually range from $769 to $33,750, with an average price of $2,152.In the last month, prices for these diamonds are down 7.8%.Compare 3,399 verified listings across 12 retailers tracked by CaratRadar.
4 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 3,399 verified 4-carat radiant lab grown diamonds listed across 12 online retailers. Prices in this segment range from $769 to $33,750, with an average asking price of $2,152 and a median of $1,412.
The price spread of $32,981 (97.7% 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.
3,399 diamonds tracked in this segment
Price range: $769 to $33,750
Average price: $2,152
Median price: $1,412
Available across 12 retailers
Savings potential: up to 97.7%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
3,399
$769
$2,152
$1,412
$33,750
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 71%3.96ct | Radiant | E | VVS2 | Ideal
From $1,262
Compare at $4,355
IGISave 64.9%3.96ct | Radiant | E | VS1 | Very Good
From $1,196
Compare at $3,405
IGISave 85.5%3.96ct | Radiant | D | VS1 | Very Good
From $1,489
Compare at $10,270
IGISave 67.5%3.96ct | Radiant | D | VS1 | Very Good
From $1,262
Compare at $3,880
IGISave 78.4%3.96ct | Radiant | G | VS1 | Very Good
From $895
Compare at $4,140
IGISave 64.6%3.96ct | Radiant | F | VS2 | Very Good
From $1,064
Compare at $3,005
IGISave 71%3.96ct | Radiant | E | VVS2 | Ideal
From $1,262
Compare at $4,355
IGISave 64.1%3.96ct | Radiant | E | VS1 | Very Good
From $1,222
Compare at $3,405
IGISave 70.7%3.96ct | Radiant | E | VVS2 | Very Good
From $1,275
Compare at $4,355
IGISave 63.8%3.96ct | Radiant | F | VS1 | Ideal
From $1,130
Compare at $3,125
IGISave 71%3.96ct | Radiant | E | VVS2 | Ideal
From $1,262
Compare at $4,355
IGISave 71%3.96ct | Radiant | E | VVS2 | Ideal
From $1,262
Compare at $4,355
IGISave 71%3.96ct | Radiant | E | VVS2 | Ideal
From $1,262
Compare at $4,355
IGISave 68.4%3.96ct | Radiant | FANCY | VVS2 | Excellent
From $2,451
Compare at $7,760
IGISave 57.3%3.96ct | Radiant | F | VS1 | Very Good
From $1,408
Compare at $3,299
IGISave 82.3%3.96ct | Radiant | D | IF | Excellent
From $5,380
Compare at $30,420
IGISave 74.1%3.96ct | Radiant | F | VVS2 | Very Good
From $1,045
Compare at $4,035
IGISave 79.3%3.96ct | Radiant | F | VS1 | Very Good
From $1,119
Compare at $5,400
IGISave 28.9%3.96ct | Radiant | E | VVS2 | Very Good
From $1,250
Compare at $1,759
IGISave 71%3.96ct | Radiant | E | VVS2 | Very Good
From $1,262
Compare at $4,355
GIASave 41%3.96ct | Radiant | F | VS1 | Excellent
From $2,238
Compare at $3,792
IGISave 49%3.96ct | Radiant | D | VVS2 | Ideal
From $2,542
Compare at $4,985
GIASave 67.2%3.96ct | Radiant | G | VS1 | Excellent
From $3,391
Compare at $10,340
IGISave 80.6%3.96ct | Radiant | F | VVS2 | Very Good
From $1,183
Compare at $6,090
3.96ct | Radiant | D | VVS2 | Very Good
From $1,814
Compare at $10,970
IGISave 63.6%3.96ct | Radiant | E | VS1 | Excellent
From $1,196
Compare at $3,285
IGISave 71.3%3.96ct | Radiant | E | VVS2 | Ideal
From $1,250
Compare at $4,355
IGISave 70.3%3.96ct | Radiant | D | VVS2 | Very Good
From $1,482
Compare at $4,985
IGISave 71.3%3.96ct | Radiant | E | VVS2 | Very Good
From $1,250
Compare at $4,355
IGISave 71.3%3.96ct | Radiant | E | VVS2 | Very Good
From $1,250
Compare at $4,355
IGISave 79.7%3.96ct | Radiant | F | VVS2 | Very Good
From $1,170
Compare at $5,780
IGISave 63.6%3.96ct | Radiant | E | VS1 | Very Good
From $1,196
Compare at $3,285
IGISave 64.5%3.96ct | Radiant | E | VS1 | Ideal
From $1,209
Compare at $3,405
IGISave 69.9%3.96ct | Radiant | E | VVS2 | Excellent
From $1,262
Compare at $4,195
IGISave 63.7%3.96ct | Radiant | E | VS1 | Very Good
From $1,235
Compare at $3,405
IGISave 64.1%3.96ct | Radiant | E | VS1 | Very Good
From $1,222
Compare at $3,405
IGISave 70%3.96ct | Radiant | F | VVS2 | Very Good
From $1,209
Compare at $4,035
IGISave 69.6%3.96ct | Radiant | E | VVS2 | Very Good
From $1,275
Compare at $4,195
IGISave 71%3.96ct | Radiant | E | VVS2 | Ideal
From $1,262
Compare at $4,355
IGISave 57.3%3.96ct | Radiant | G | VS1 | Very Good
From $1,038
Compare at $2,429
IGISave 71%3.96ct | Radiant | E | VVS2 | Ideal
From $1,262
Compare at $4,355
IGISave 68.8%3.96ct | Radiant | D | VVS2 | Excellent
From $1,493
Compare at $4,790
IGISave 71%3.96ct | Radiant | E | VVS2 | Ideal
From $1,262
Compare at $4,355
IGISave 24.6%3.96ct | Radiant | E | VS1 | Very Good
From $1,183
Compare at $1,569
IGISave 86.5%3.96ct | Radiant | D | VVS2 | Very Good
From $1,482
Compare at $10,970
IGISave 71.3%3.96ct | Radiant | E | VVS2 | Very Good
From $1,250
Compare at $4,355
IGISave 70.4%3.96ct | Radiant | F | VVS2 | Excellent
From $1,196
Compare at $4,035
IGISave 76.3%3.96ct | Radiant | D | IF | Very Good
From $7,215
Compare at $30,420
IGISave 69.1%3.96ct | Radiant | F | VS1 | Very Good
From $966
Compare at $3,125
IGISave 87.2%3.96ct | Radiant | E | VS1 | Ideal
From $1,016
Compare at $7,930
Entry pricing in this category starts around $769.
What to Know When Shopping for 4 Carat Radiant Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $32,981 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 $1,412 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 3,399 comparable stones in this segment. Prices start around $769 and go up to $33,750.
Based on the latest market data, the average asking price is about $2,152 with a median around $1,412.
The observed spread is roughly $32,981 across tracked listings, which is about 97.7% 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 $1,412, 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 12 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 $32,981 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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