4 Carat Round Lab Grown Diamond Prices Comparison
As of July 2026, 4 carat round lab grown diamonds usually range from $465 to $20,880, with an average price of $3,066.In the last month, prices for these diamonds are down 1.5%.Compare 7,877 verified listings across 14 retailers tracked by CaratRadar.
4 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 7,877 verified 4-carat round lab grown diamonds listed across 14 online retailers. Prices in this segment range from $465 to $20,880, with an average asking price of $3,066 and a median of $2,336.
The price spread of $20,415 (97.8% 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.
7,877 diamonds tracked in this segment
Price range: $465 to $20,880
Average price: $3,066
Median price: $2,336
Available across 14 retailers
Savings potential: up to 97.8%
Price Range Overview
As of Jul 11, 2026Real market range for this carat, shape, and diamond type.
7,877
$465
$3,066
$2,336
$20,880
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 76%IGI | 4.02ct | Round | H | VVS2 | Excellent
From $589
Compare at $2,451
Save 52.6%IGI | 4.05ct | Round | G | VS1 | Ideal
From $613
Compare at $1,293
Save 51.7%IGI | 4.01ct | Round | G | VS1 | Ideal
From $614
Compare at $1,271
Save 52.7%IGI | 4.06ct | Round | G | VS1 | Ideal
From $615
Compare at $1,300
Save 69.8%IGI | 4.03ct | Round | G | VS1 | Ideal
From $617
Compare at $2,040
Save 69.8%IGI | 4.03ct | Round | G | VS1 | Ideal
From $617
Compare at $2,040
Save 52.2%IGI | 4.06ct | Round | G | VS1 | Ideal
From $622
Compare at $1,301
Save 51.4%IGI | 4.03ct | Round | G | VS1 | Ideal
From $623
Compare at $1,283
Save 52.3%IGI | 4.07ct | Round | G | VS1 | Ideal
From $623
Compare at $1,307
Save 52.3%IGI | 4.07ct | Round | G | VS1 | Ideal
From $623
Compare at $1,307
Save 69.8%IGI | 4.03ct | Round | G | VS1 | Ideal
From $624
Compare at $2,068
Save 69.8%IGI | 4.03ct | Round | G | VS1 | Ideal
From $624
Compare at $2,068
Save 69.8%IGI | 4.03ct | Round | G | VS1 | Ideal
From $624
Compare at $2,068
Save 69.8%IGI | 4.03ct | Round | G | VS1 | Ideal
From $624
Compare at $2,068
Save 69.8%IGI | 4.04ct | Round | G | VS1 | Ideal
From $626
Compare at $2,073
Save 69.8%IGI | 4.04ct | Round | G | VS1 | Ideal
From $626
Compare at $2,073
Save 69.8%IGI | 4.04ct | Round | G | VS1 | Ideal
From $626
Compare at $2,073
Save 69.8%IGI | 4.06ct | Round | G | VS1 | Ideal
From $629
Compare at $2,083
Save 69.9%IGI | 4.03ct | Round | G | VS1 | Ideal
From $631
Compare at $2,095
Save 69.9%IGI | 4.05ct | Round | G | VS1 | Ideal
From $634
Compare at $2,105
Save 69.9%IGI | 4.05ct | Round | G | VS1 | Ideal
From $634
Compare at $2,105
Save 75.9%IGI | 4.03ct | Round | G | VS1 | Ideal
From $634
Compare at $2,635
Save 69.9%IGI | 4.07ct | Round | G | VS1 | Ideal
From $637
Compare at $2,116
Save 69.9%IGI | 4.08ct | Round | G | VS1 | Ideal
From $638
Compare at $2,120
Save 68.5%IGI | 4.01ct | Round | F | SI1 | Ideal
From $645
Compare at $2,049
Save 54.6%IGI | 4.07ct | Round | F | SI1 | Ideal
From $649
Compare at $1,429
Save 53.7%IGI | 4.03ct | Round | F | SI1 | Ideal
From $650
Compare at $1,404
Save 54.2%IGI | 4.08ct | Round | F | SI1 | Ideal
From $658
Compare at $1,436
Save 79.9%IGI | 4ct | Round | G | VS2 | Excellent
From $679
Compare at $3,370
Save 69.1%IGI | 4.01ct | Round | F | SI1 | Ideal
From $680
Compare at $2,202
Save 62.3%IGI | 4.01ct | Round | G | VVS2 | Ideal
From $682
Compare at $1,811
Save 78.1%IGI | 4ct | Round | F | VS1 | Excellent
From $683
Compare at $3,119
Save 75.5%IGI | 4.01ct | Round | E | VS1 | Ideal
From $686
Compare at $2,796
Save 75.5%IGI | 4.01ct | Round | E | VS1 | Ideal
From $686
Compare at $2,796
Save 78.1%IGI | 4.04ct | Round | F | VS1 | Excellent
From $689
Compare at $3,150
Save 78.1%IGI | 4.04ct | Round | F | VS1 | Excellent
From $689
Compare at $3,150
Save 78.1%IGI | 4ct | Round | F | VS1 | Excellent
From $690
Compare at $3,154
Save 78.1%IGI | 4ct | Round | F | VS2 | Excellent
From $690
Compare at $3,154
Save 78.1%IGI | 4ct | Round | F | VS1 | Excellent
From $690
Compare at $3,154
Save 78.1%IGI | 4ct | Round | F | VS1 | Excellent
From $690
Compare at $3,154
Save 65.6%IGI | 4.01ct | Round | F | VS2 | Excellent
From $692
Compare at $2,013
Save 78.5%IGI | 4.06ct | Round | E | VVS2 | Ideal
From $692
Compare at $3,225
Save 70.8%IGI | 4.01ct | Round | F | VS1 | Excellent
From $692
Compare at $2,372
Save 58.1%IGI | 4.01ct | Round | G | VS1 | Excellent
From $692
Compare at $1,652
Save 70.8%IGI | 4.01ct | Round | F | VS1 | Excellent
From $692
Compare at $2,372
Save 70.8%IGI | 4.01ct | Round | F | VS1 | Excellent
From $692
Compare at $2,372
Save 70.8%IGI | 4.01ct | Round | F | VS1 | Excellent
From $692
Compare at $2,372
Save 78.1%IGI | 4.02ct | Round | F | VS1 | Excellent
From $694
Compare at $3,169
Save 78.1%IGI | 4.02ct | Round | F | VS1 | Excellent
From $694
Compare at $3,169
Save 70.8%IGI | 4.03ct | Round | F | VS1 | Excellent
From $695
Compare at $2,383
Entry pricing in this category starts around $465.
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 $20,415 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 $2,336 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 7,877 comparable stones in this segment. Prices start around $465 and go up to $20,880.
Based on the latest market data, the average asking price is about $3,066 with a median around $2,336.
The observed spread is roughly $20,415 across tracked listings, which is about 97.8% 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 $3,066. The median price is $2,336, 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 14 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 $20,415 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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