4 Carat Lab Grown Diamond Prices Comparison
As of July 2026, the average price of a 4 carat lab grown diamond is $3,065.4 carat diamonds can cost anywhere from $131 to $40,425 depending on shape, color, clarity, and other factors.In the last month, prices for these diamonds are down 2%.Compare 30,837 verified listings across 15 retailers in the tables below.
4 Carat Lab Grown Diamond Market Overview
CaratRadar currently tracks 30,837 verified 4-carat lab grown diamonds listed across 15 online retailers. Prices in this segment range from $131 to $40,425, with an average asking price of $3,065 and a median of $2,165.
The price spread of $40,294 (99.7% 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.
30,837 diamonds tracked in this segment
Price range: $131 to $40,425
Average price: $3,065
Median price: $2,165
Available across 15 retailers
Savings potential: up to 99.7%
Price Range Overview
As of Jul 13, 2026Real market range for this carat, shape, and diamond type.
30,837
$131
$3,065
$2,165
$40,425
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.
Save 78.7%IGI | 4.04ct | Radiant | G | SI1 | Ideal
From $509
Compare at $2,385
Save 70.1%IGI | 4.01ct | Pear | F | SI1 | Ideal
From $523
Compare at $1,747
Save 70.1%IGI | 4.02ct | Pear | F | SI1 | Ideal
From $524
Compare at $1,755
Save 70.6%IGI | 4.08ct | Pear | F | SI1 | Ideal
From $531
Compare at $1,805
Save 69.5%IGI | 4.02ct | Pear | F | SI1 | Ideal
From $536
Compare at $1,758
Save 70%IGI | 4.08ct | Pear | F | SI1 | Ideal
From $543
Compare at $1,808
Save 69.4%IGI | 4.04ct | Pear | F | SI1 | Ideal
From $544
Compare at $1,776
Save 69.3%IGI | 4.08ct | Pear | F | SI1 | Ideal
From $555
Compare at $1,810
Save 68.5%IGI | 4.02ct | Marquise | F | SI1 | Ideal
From $555
Compare at $1,763
Save 48.4%IGI | 4.07ct | Emerald | E | SI1 | Very Good
From $555
Compare at $1,076
Save 68.9%IGI | 4.08ct | Marquise | F | SI1 | Ideal
From $563
Compare at $1,812
Save 68.6%IGI | 4.06ct | Pear | F | SI1 | Ideal
From $564
Compare at $1,797
Save 64.7%IGI | 4.05ct | Marquise | I | VS2 | Ideal
From $566
Compare at $1,604
Save 68.6%IGI | 4.07ct | Pear | F | SI1 | Ideal
From $566
Compare at $1,805
Save 72%IGI | 4.02ct | Pear | E | SI1 | Ideal
From $569
Compare at $2,035
Save 68.8%IGI | 4.09ct | Pear | F | SI1 | Ideal
From $569
Compare at $1,822
Save 79.6%GCAL | 4.02ct | Radiant | F | VS1 | Excellent
From $572
Compare at $2,800
Save 74.3%IGI | 4ct | Radiant | E | SI2 | Very Good
From $573
Compare at $2,229
Save 71.8%IGI | 4.02ct | Marquise | E | SI1 | Very Good
From $574
Compare at $2,036
Save 71.8%IGI | 4.02ct | Pear | E | SI1 | Ideal
From $575
Compare at $2,037
Save 67.7%IGI | 4.04ct | Pear | F | SI1 | Very Good
From $576
Compare at $1,784
Save 72%IGI | 4.05ct | Marquise | E | SI1 | Ideal
From $578
Compare at $2,065
Save 71.2%IGI | 4ct | Pear | E | SI1 | Ideal
From $581
Compare at $2,019
Save 72.3%IGI | 4.09ct | Pear | E | SI1 | Ideal
From $584
Compare at $2,105
IGI | 4.02ct | Oval | H | VS2 | Very Good
From $587
Compare at $626
Save 76%IGI | 4.02ct | Round | H | VVS2 | Excellent
From $589
Compare at $2,451
Save 65.8%IGI | 4.05ct | Radiant | D | SI1 | Ideal
From $590
Compare at $1,725
Save 66.7%IGI | 4.04ct | Pear | F | SI1 | Excellent
From $590
Compare at $1,772
Save 71.8%IGI | 4.08ct | Pear | E | SI1 | Very Good
From $592
Compare at $2,097
Save 68.4%IGI | 4.03ct | Oval | H | VS1 | Excellent
From $594
Compare at $1,877
IGI | 4ct | Oval | H | VS1 | Excellent
From $596
Compare at $636
Save 68.8%IGI | 4.05ct | Oval | H | VS1 | Ideal
From $597
Compare at $1,914
Save 67.6%IGI | 4.01ct | Pear | G | VS1 | Excellent
From $597
Compare at $1,840
Save 64.7%IGI | 4.01ct | Pear | D | SI1 | Ideal
From $598
Compare at $1,696
Save 71%IGI | 4.04ct | Pear | E | SI1 | Very Good
From $598
Compare at $2,061
Save 68.5%IGI | 4.02ct | Oval | H | VS1 | Ideal
From $599
Compare at $1,900
IGI | 4.02ct | Oval | H | VS1 | Very Good
From $599
Compare at $639
Save 65%IGI | 4.03ct | Marquise | D | SI1 | Ideal
From $600
Compare at $1,712
IGI | 4.03ct | Oval | H | VS1 | Excellent
From $601
Compare at $641
IGI | 4.03ct | Oval | H | VS1 | Excellent
From $601
Compare at $641
Save 68.5%IGI | 4.03ct | Oval | H | VS1 | Ideal
From $601
Compare at $1,905
IGI | 4.03ct | Oval | H | VS1 | Very Good
From $601
Compare at $641
Save 71.3%IGI | 4.08ct | Pear | E | SI1 | Ideal
From $602
Compare at $2,100
IGI | 4.04ct | Oval | H | VS1 | Ideal
From $603
Compare at $643
IGI | 4.04ct | Oval | H | VS1 | Very Good
From $603
Compare at $643
IGI | 4.04ct | Oval | H | VS1 | Very Good
From $603
Compare at $643
IGI | 4ct | Oval | H | VS1 | Very Good
From $603
Compare at $643
Save 68.1%IGI | 4.01ct | Oval | H | VS1 | Ideal
From $604
Compare at $1,895
Save 64.4%IGI | 4.01ct | Marquise | D | SI1 | Ideal
From $604
Compare at $1,698
Save 71.2%IGI | 4.08ct | Pear | E | SI1 | Very Good
From $604
Compare at $2,100
Entry pricing in this category starts around $131.
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 $40,294 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 $2,165 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 30,837 comparable stones in this segment. Prices start around $131 and go up to $40,425.
Based on the latest market data, the average asking price is about $3,065 with a median around $2,165.
The observed spread is roughly $40,294 across tracked listings, which is about 99.7% from highest to lowest offer in this bucket.
We refresh pricing data daily so these pages stay current with market changes.
Based on completed market data, the fair market benchmark is $3,065. The median price is $2,165, so offers between the median and fair benchmark can be reasonable, while reputable listings below the median may be especially competitive.
We currently track this stone category across 15 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 $40,294 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.
4 Carat Oval Lab Grown Diamond Prices
4 Carat Round Lab Grown Diamond Prices
4 Carat Radiant Lab Grown Diamond Prices
4 Carat Pear Lab Grown Diamond Prices
4 Carat Cushion Lab Grown Diamond Prices
4 Carat Emerald Lab Grown Diamond Prices
4 Carat Marquise Lab Grown Diamond Prices
4 Carat Princess Lab Grown Diamond Prices
4 Carat Heart Lab Grown Diamond Prices
4 Carat Asscher Lab Grown Diamond Prices
Tracking Lab Grown inventory for 4 carat all-shape diamonds.