4 Carat Round Lab Grown Diamond Prices Comparison
As of February 2026, 4 carat round lab grown diamonds usually range from $644 to $35,670, with an average price of $1,945.In the last month, prices for these diamonds are down 4.5%.Compare 5,390 verified listings across 13 retailers tracked by CaratRadar.
4 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 5,390 verified 4-carat round lab grown diamonds listed across 13 online retailers. Prices in this segment range from $644 to $35,670, with an average asking price of $1,945 and a median of $1,226.
The price spread of $35,026 (98.2% 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.
5,390 diamonds tracked in this segment
Price range: $644 to $35,670
Average price: $1,945
Median price: $1,226
Available across 13 retailers
Savings potential: up to 98.2%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
5,390
$644
$1,945
$1,226
$35,670
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 64.6%3.96ct | Round | E | VS1 | Excellent
From $1,164
Compare at $3,285
IGISave 61.9%3.96ct | Round | F | VS1 | Excellent
From $1,144
Compare at $3,005
IGISave 64.6%3.96ct | Round | E | VS1 | Excellent
From $1,164
Compare at $3,285
IGISave 64.3%3.96ct | Round | E | VS2 | Excellent
From $1,102
Compare at $3,085
IGISave 87%3.96ct | Round | E | VVS2 | Excellent
From $1,293
Compare at $9,910
IGISave 65.6%3.96ct | Round | E | VS2 | Ideal
From $1,102
Compare at $3,205
IGISave 63.4%3.96ct | Round | F | VS1 | Ideal
From $1,144
Compare at $3,125
IGISave 83.4%3.96ct | Round | E | VS2 | Ideal
From $1,036
Compare at $6,240
IGISave 48.6%3.96ct | Round | E | VS1 | Ideal
From $2,469
Compare at $4,800
IGISave 48.5%3.96ct | Round | F | VVS2 | Ideal
From $2,579
Compare at $5,010
IGISave 48.6%3.96ct | Round | E | VS1 | Ideal
From $2,469
Compare at $4,800
IGISave 80%3.96ct | Round | D | VS2 | Ideal
From $1,279
Compare at $6,390
IGISave 70.3%3.96ct | Round | E | VS1 | Excellent
From $974
Compare at $3,285
IGISave 70.3%3.96ct | Round | E | VS1 | Excellent
From $974
Compare at $3,285
IGISave 70.9%3.96ct | Round | E | VVS2 | Ideal
From $1,267
Compare at $4,355
IGISave 86.2%3.96ct | Round | E | VVS2 | Ideal
From $1,359
Compare at $9,820
IGISave 64.7%3.96ct | Round | E | VS1 | Excellent
From $1,161
Compare at $3,285
IGISave 67.3%3.96ct | Round | F | VS1 | Excellent
From $982
Compare at $3,005
IGISave 68.4%3.96ct | Round | E | VVS1 | Ideal
From $2,432
Compare at $7,700
IGISave 67.3%3.96ct | Round | F | VS1 | Excellent
From $982
Compare at $3,005
IGISave 64.3%3.96ct | Round | E | VS2 | Excellent
From $1,102
Compare at $3,085
IGISave 67.3%3.96ct | Round | F | VS1 | Excellent
From $982
Compare at $3,005
IGISave 64.6%3.96ct | Round | E | VS1 | Excellent
From $1,164
Compare at $3,285
GIASave 78.1%3.96ct | Round | E | VVS2 | Excellent
From $2,339
Compare at $10,690
IGISave 69.6%3.96ct | Round | F | VS1 | Ideal
From $1,406
Compare at $4,630
IGISave 88.6%3.96ct | Round | E | VVS2 | Ideal
From $1,134
Compare at $9,910
IGISave 77%3.96ct | Round | F | SI1 | Ideal
From $745
Compare at $3,240
IGISave 81.9%3.96ct | Round | E | VS2 | Ideal
From $815
Compare at $4,500
IGISave 48.6%3.96ct | Round | E | VS1 | Ideal
From $2,469
Compare at $4,800
IGISave 81.9%3.96ct | Round | E | VS2 | Ideal
From $815
Compare at $4,500
IGISave 48.6%3.96ct | Round | E | VS1 | Ideal
From $2,469
Compare at $4,800
IGISave 82.8%3.96ct | Round | F | VS2 | Ideal
From $751
Compare at $4,360
IGISave 48.5%3.96ct | Round | F | VVS2 | Ideal
From $2,579
Compare at $5,010
IGISave 74.9%3.96ct | Round | E | VS2 | Ideal
From $1,141
Compare at $4,550
IGISave 48.6%3.96ct | Round | E | VS1 | Ideal
From $2,469
Compare at $4,800
IGISave 65.3%3.96ct | Round | E | VS1 | Excellent
From $1,139
Compare at $3,285
IGISave 70.3%3.96ct | Round | E | VS1 | Excellent
From $974
Compare at $3,285
IGISave 78.1%3.96ct | Round | D | VVS2 | Excellent
From $1,798
Compare at $8,210
IGISave 70.3%3.96ct | Round | E | VS1 | Excellent
From $974
Compare at $3,285
IGISave 75.4%3.96ct | Round | D | VS1 | Excellent
From $1,638
Compare at $6,650
IGISave 75.6%3.96ct | Round | E | VVS2 | Ideal
From $1,062
Compare at $4,355
IGISave 85.5%3.96ct | Round | E | VVS2 | Ideal
From $1,078
Compare at $7,420
IGISave 87.3%3.96ct | Round | E | VVS2 | Ideal
From $1,254
Compare at $9,860
IGISave 82.5%3.96ct | Round | E | VS1 | Ideal
From $1,010
Compare at $5,760
IGISave 68.9%3.96ct | Round | F | VS2 | Ideal
From $934
Compare at $3,005
IGISave 68.3%3.96ct | Round | F | VS2 | Excellent
From $952
Compare at $3,005
IGISave 61.9%3.96ct | Round | F | VS1 | Excellent
From $1,144
Compare at $3,005
IGISave 64.3%3.96ct | Round | E | VS2 | Excellent
From $1,102
Compare at $3,085
IGISave 69.4%3.96ct | Round | F | VVS2 | Excellent
From $1,188
Compare at $3,880
IGISave 61.9%3.96ct | Round | F | VS1 | Excellent
From $1,144
Compare at $3,005
Entry pricing in this category starts around $644.
What to Know When Shopping for 4 Carat Round Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $35,026 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 $1,226 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 5,390 comparable stones in this segment. Prices start around $644 and go up to $35,670.
Based on the latest market data, the average asking price is about $1,945 with a median around $1,226.
The observed spread is roughly $35,026 across tracked listings, which is about 98.2% 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 $1,226, 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 13 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 $35,026 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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