4 Carat Radiant Lab Grown Diamond Prices Comparison
As of April 2026, 4 carat radiant lab grown diamonds usually range from $565 to $20,303, with an average price of $3,017.In the last month, prices for these diamonds are down 1.5%.Compare 9,426 verified listings across 11 retailers tracked by CaratRadar.
4 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 9,426 verified 4-carat radiant lab grown diamonds listed across 11 online retailers. Prices in this segment range from $565 to $20,302, with an average asking price of $3,017 and a median of $2,191.
The price spread of $19,738 (97.2% 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.
9,426 diamonds tracked in this segment
Price range: $565 to $20,302
Average price: $3,017
Median price: $2,191
Available across 11 retailers
Savings potential: up to 97.2%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
9,426
$565
$3,017
$2,191
$20,303
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 59.1%GIA | 4ct | Radiant | E | SI1 | Very Good
From $4,400
Compare at $10,760
GIA | 4ct | Radiant | E | VS1 | Excellent
From $9,620
Save 65.9%GIA | 4ct | Radiant | D | VVS1 | Excellent
From $6,252
Compare at $18,346
Save 63.5%GIA | 4ct | Radiant | D | VVS2 | Excellent
From $4,100
Compare at $11,240
Save 78.9%GIA | 4ct | Radiant | E | IF | Excellent
From $12,655
Compare at $60,030
Save 49.4%GIA | 4ct | Radiant | E | VVS2 | Ideal
From $6,960
Compare at $13,760
Save 16.5%GIA | 4ct | Radiant | D | VVS1 | Excellent
From $12,890
Compare at $15,440
Save 66.1%GIA | 4ct | Radiant | E | VS1 | Excellent
From $5,030
Compare at $14,840
Save 24.2%GIA | 4ct | Radiant | E | FL | Ideal
From $22,620
Compare at $29,855
Save 15.7%GIA | 4ct | Radiant | D | FL | Ideal
From $29,130
Compare at $34,555
Save 15.7%GIA | 4ct | Radiant | D | FL | Ideal
From $29,130
Compare at $34,555
Save 66.5%GIA | 4ct | Radiant | E | VVS1 | Excellent
From $3,672
Compare at $10,970
Save 65.9%GIA | 4ct | Radiant | D | VVS1 | Excellent
From $6,252
Compare at $18,346
Save 27.7%GIA | 4ct | Radiant | D | VVS1 | Ideal
From $8,445
Compare at $11,678
Save 72.8%IGI | 4ct | Radiant | F | IF | Ideal
From $8,373
Compare at $30,840
Save 77.7%IGI | 4ct | Radiant | G | SI1 | Ideal
From $973
Compare at $4,360
Save 15.6%IGI | 4ct | Radiant | D | VS1 | Ideal
From $4,154
Compare at $4,924
Save 46.9%IGI | 4ct | Radiant | G | VS2 | Ideal
From $2,739
Compare at $5,156
Save 69.6%IGI | 4ct | Radiant | F | VS1 | Excellent
From $1,636
Compare at $5,380
Save 86.2%IGI | 4ct | Radiant | F | SI1 | Ideal
From $889
Compare at $6,450
Save 80.5%IGI | 4ct | Radiant | D | VS1 | Ideal
From $1,650
Compare at $8,480
Save 79.6%IGI | 4ct | Radiant | D | VS1 | Ideal
From $1,650
Compare at $8,080
Save 68%IGI | 4ct | Radiant | E | VS2 | Ideal
From $2,427
Compare at $7,580
Save 33.3%IGI | 4ct | Radiant | FANCY | VVS2 | Very Good
From $3,301
Compare at $4,952
Save 85.6%IGI | 4ct | Radiant | E | SI1 | Ideal
From $945
Compare at $6,550
Save 83%IGI | 4ct | Radiant | E | SI2 | Ideal
From $875
Compare at $5,140
Save 69.4%IGI | 4ct | Radiant | F | VS1 | Ideal
From $2,427
Compare at $7,930
Save 85.6%IGI | 4ct | Radiant | E | SI1 | Ideal
From $945
Compare at $6,550
Save 71.2%IGI | 4ct | Radiant | D | VS1 | Ideal
From $2,816
Compare at $9,790
Save 85.6%IGI | 4ct | Radiant | E | SI1 | Ideal
From $945
Compare at $6,550
Save 71.2%IGI | 4ct | Radiant | D | VS1 | Ideal
From $2,816
Compare at $9,790
Save 76.1%IGI | 4ct | Radiant | F | VS1 | Ideal
From $1,664
Compare at $6,970
Save 22.6%IGI | 4ct | Radiant | H | VVS2 | Ideal
From $931
Compare at $1,203
Save 74.9%IGI | 4ct | Radiant | D | IF | Excellent
From $7,862
Compare at $31,272
Save 22.3%IGI | 4ct | Radiant | E | VS2 | Ideal
From $1,771
Compare at $2,278
Save 77.8%IGI | 4ct | Radiant | F | SI1 | Ideal
From $889
Compare at $4,010
Save 67.7%IGI | 4ct | Radiant | D | IF | Excellent
From $6,734
Compare at $20,830
Save 28.4%IGI | 4ct | Radiant | F | VS1 | Very Good
From $1,408
Compare at $1,968
Save 79.9%IGI | 4ct | Radiant | D | VS1 | Ideal
From $1,451
Compare at $7,220
Save 41.5%IGI | 4ct | Radiant | G | VS1 | Ideal
From $1,103
Compare at $1,885
Save 76.1%IGI | 4ct | Radiant | D | VS1 | Ideal
From $1,698
Compare at $7,110
Save 86.2%IGI | 4ct | Radiant | F | SI1 | Ideal
From $889
Compare at $6,450
Save 53%IGI | 4ct | Radiant | FANCY | VVS2 | Excellent
From $3,302
Compare at $7,021
Save 64.9%IGI | 4ct | Radiant | D | VVS1 | Excellent
From $5,603
Compare at $15,964
Save 39.7%IGI | 4ct | Radiant | G | VS1 | Ideal
From $1,114
Compare at $1,846
Save 16.8%IGI | 4ct | Radiant | FANCY | VS1 | Ideal
From $2,080
Compare at $2,501
Save 77.8%IGI | 4ct | Radiant | E | SI1 | Ideal
From $904
Compare at $4,070
Save 66.7%IGI | 4ct | Radiant | D | IF | Excellent
From $6,734
Compare at $20,252
Save 64.9%IGI | 4ct | Radiant | D | VVS1 | Excellent
From $5,603
Compare at $15,964
Save 71.1%IGI | 4ct | Radiant | F | IF | Very Good
From $3,901
Compare at $13,520
Entry pricing in this category starts around $565.
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 $19,738 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 $2,191 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 9,426 comparable stones in this segment. Prices start around $565 and go up to $20,302.
Based on the latest market data, the average asking price is about $3,017 with a median around $2,191.
The observed spread is roughly $19,738 across tracked listings, which is about 97.2% 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 $2,191, 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 11 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 $19,738 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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