4 Carat Lab Grown Diamond Prices Comparison
As of February 2026, the average price of a 4 carat lab grown diamond is $2,279.4 carat diamonds can cost anywhere from $629 to $68,529 depending on shape, color, clarity, and other factors.In the last month, prices for these diamonds are down 3.3%.Compare 19,764 verified listings across 13 retailers in the tables below.
4 Carat Lab Grown Diamond Market Overview
CaratRadar currently tracks 19,764 verified 4-carat lab grown diamonds listed across 13 online retailers. Prices in this segment range from $629 to $68,529, with an average asking price of $2,279 and a median of $1,363.
The price spread of $67,900 (99.1% 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.
19,764 diamonds tracked in this segment
Price range: $629 to $68,529
Average price: $2,279
Median price: $1,363
Available across 13 retailers
Savings potential: up to 99.1%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
19,764
$629
$2,279
$1,363
$68,529
Price History
Price Comparison Matrix
4 Carat Lab Grown Diamond Prices by Shape
Shape-level averages for this carat and type. Open each shape page for full market detail.
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
IGISave 62.8%4ct | Antique | FANCY | VS1 | Ideal
From $2,938
Compare at $7,900
IGISave 59.3%4.01ct | Antique | FANCY | VVS2 | Good
From $8,406
Compare at $20,660
IGISave 75.2%4.01ct | Antique | E | VVS2 | Ideal
From $2,242
Compare at $9,040
IGISave 62.8%4.02ct | Antique | FANCY | VVS2 | Ideal
From $3,451
Compare at $9,280
IGISave 68.1%4.02ct | Antique | D | VVS2 | Ideal
From $2,987
Compare at $9,370
GIASave 82.3%3.96ct | Asscher | D | VVS2 | Excellent
From $5,215
Compare at $29,450
IGISave 18.5%3.96ct | Asscher | D | VS1 | Very Good
From $1,046
Compare at $1,283
IGISave 86.7%3.96ct | Asscher | F | VS1 | Ideal
From $1,033
Compare at $7,790
GIASave 56%3.96ct | Asscher | D | IF | Excellent
From $15,864
Compare at $36,036
IGISave 77.4%3.96ct | Asscher | E | VS1 | Ideal
From $1,489
Compare at $6,600
IGISave 49.4%3.96ct | Asscher | E | VS2 | Excellent
From $2,356
Compare at $4,660
IGISave 84.7%3.96ct | Asscher | E | VVS2 | Excellent
From $950
Compare at $6,220
IGI3.96ct | Asscher | D | IF | Ideal
From $20,037
Compare at $21,150
IGISave 79.3%3.96ct | Asscher | E | VVS2 | Ideal
From $1,287
Compare at $6,220
IGISave 42.4%3.96ct | Asscher | E | SI1 | Excellent
From $2,315
Compare at $4,020
IGISave 69.7%3.96ct | Asscher | E | VS1 | Very Good
From $1,033
Compare at $3,405
IGISave 42.9%3.96ct | Asscher | F | VS1 | Ideal
From $2,646
Compare at $4,630
IGISave 67.7%3.97ct | Asscher | E | VS1 | Excellent
From $1,064
Compare at $3,295
IGISave 69.2%3.97ct | Asscher | E | VS1 | Ideal
From $1,050
Compare at $3,410
IGISave 73.7%3.97ct | Asscher | E | VVS2 | Ideal
From $1,148
Compare at $4,365
IGISave 85.4%3.97ct | Asscher | E | VS2 | Ideal
From $1,103
Compare at $7,530
IGISave 84.2%3.97ct | Asscher | E | VS1 | Excellent
From $888
Compare at $5,620
IGISave 56.7%3.97ct | Asscher | D | IF | Ideal
From $16,876
Compare at $38,971
IGISave 82.4%3.97ct | Asscher | E | VS1 | Ideal
From $1,050
Compare at $5,950
IGISave 82.6%3.97ct | Asscher | F | VS1 | Ideal
From $842
Compare at $4,840
IGISave 42.8%3.98ct | Asscher | F | VS1 | Excellent
From $2,660
Compare at $4,650
IGISave 42.8%3.98ct | Asscher | G | VS1 | Excellent
From $2,407
Compare at $4,210
IGISave 78%3.98ct | Asscher | D | IF | Ideal
From $12,095
Compare at $55,020
IGISave 69.6%3.98ct | Asscher | E | VS1 | Ideal
From $1,038
Compare at $3,420
IGISave 56.4%3.98ct | Asscher | D | VS1 | Very Good
From $1,979
Compare at $4,539
GIASave 43.3%3.98ct | Asscher | G | VVS2 | Excellent
From $2,691
Compare at $4,748
IGISave 50.2%3.98ct | Asscher | E | VS1 | Ideal
From $2,542
Compare at $5,100
IGISave 74.3%3.98ct | Asscher | E | VVS2 | Ideal
From $1,124
Compare at $4,375
IGISave 81.6%3.99ct | Asscher | E | VVS2 | Ideal
From $1,085
Compare at $5,910
IGISave 85.7%3.99ct | Asscher | E | VS1 | Ideal
From $899
Compare at $6,310
IGISave 56.7%3.99ct | Asscher | D | IF | Ideal
From $16,959
Compare at $39,165
IGISave 42.9%3.99ct | Asscher | F | VS1 | Ideal
From $2,666
Compare at $4,670
IGISave 42.9%3.99ct | Asscher | E | VS2 | Ideal
From $2,666
Compare at $4,670
IGISave 50.1%3.99ct | Asscher | F | VVS2 | Ideal
From $2,504
Compare at $5,020
IGISave 59.4%4ct | Asscher | F | VS1 | Very Good
From $21,370
Compare at $52,589
IGISave 78.3%4ct | Asscher | D | VS2 | Ideal
From $1,935
Compare at $8,900
GIASave 33.3%4ct | Asscher | F | VS2 | Excellent
From $2,601
Compare at $3,899
GIASave 11.5%4ct | Asscher | F | VS2 | Ideal
From $6,550
Compare at $7,400
IGISave 86.6%4ct | Asscher | G | VS2 | Ideal
From $1,024
Compare at $7,620
IGISave 58.3%4ct | Asscher | H | VS1 | Ideal
From $16,350
Compare at $39,197
IGISave 58.3%4ct | Asscher | H | VS1 | Ideal
From $16,350
Compare at $39,197
IGISave 44.3%4ct | Asscher | K | SI1 | Very Good
From $1,348
Compare at $2,420
IGISave 75.7%4ct | Asscher | F | VS1 | Ideal
From $1,604
Compare at $6,600
IGISave 17.3%4ct | Asscher | D | VVS2 | Very Good
From $1,024
Compare at $1,238
IGISave 84.2%4ct | Asscher | E | VS1 | Ideal
From $1,561
Compare at $9,900
Entry pricing in this category starts around $629.
What to Know When Shopping for 4 Carat Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $67,900 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 $1,363 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.
Frequently Asked Questions
We currently track 19,764 comparable stones in this segment. Prices start around $629 and go up to $68,529.
Based on the latest market data, the average asking price is about $2,279 with a median around $1,363.
The observed spread is roughly $67,900 across tracked listings, which is about 99.1% 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 $1,363, 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 $67,900 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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