3.8 Carat Round Lab Grown Diamond Prices Comparison
As of May 2026, 3.8 carat round lab grown diamonds usually range from $498 to $27,079, with an average price of $3,545.In the last month, prices for these diamonds are down 3.6%.Compare 661 verified listings across 10 retailers tracked by CaratRadar.
3.8 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 661 verified 3.8-carat round lab grown diamonds listed across 10 online retailers. Prices in this segment range from $498 to $27,079, with an average asking price of $3,545 and a median of $2,539.
The price spread of $26,581 (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.
661 diamonds tracked in this segment
Price range: $498 to $27,079
Average price: $3,545
Median price: $2,539
Available across 10 retailers
Savings potential: up to 98.2%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
661
$498
$3,545
$2,539
$27,079
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 69.6%IGI | 3.84ct | Round | G | VS2 | Ideal
From $694
Compare at $2,286
Save 79.9%IGI | 3.82ct | Round | F | VS2 | Ideal
From $718
Compare at $3,570
Save 79.6%IGI | 3.83ct | Round | F | VS2 | Ideal
From $719
Compare at $3,530
Save 66.2%IGI | 3.85ct | Round | F | VVS2 | Ideal
From $746
Compare at $2,208
Save 76.7%IGI | 3.88ct | Round | E | VS1 | Excellent
From $751
Compare at $3,220
Save 76.7%IGI | 3.89ct | Round | E | VS1 | Excellent
From $753
Compare at $3,225
Save 79.6%IGI | 3.82ct | Round | D | VS2 | Excellent
From $756
Compare at $3,705
Save 76%IGI | 3.8ct | Round | E | VS1 | Excellent
From $756
Compare at $3,150
Save 76%IGI | 3.8ct | Round | E | VS1 | Excellent
From $756
Compare at $3,150
Save 76%IGI | 3.8ct | Round | E | VS1 | Excellent
From $756
Compare at $3,150
Save 76%IGI | 3.8ct | Round | E | VS1 | Excellent
From $756
Compare at $3,150
Save 76%IGI | 3.8ct | Round | E | VS1 | Excellent
From $756
Compare at $3,150
Save 76%IGI | 3.81ct | Round | E | VS1 | Excellent
From $757
Compare at $3,160
Save 76%IGI | 3.81ct | Round | E | VS1 | Excellent
From $757
Compare at $3,160
Save 64.9%IGI | 3.8ct | Round | E | VS1 | Excellent
From $758
Compare at $2,159
Save 76%IGI | 3.82ct | Round | E | VS1 | Excellent
From $760
Compare at $3,170
Save 79.8%IGI | 3.89ct | Round | D | VS2 | Excellent
From $761
Compare at $3,770
Save 65.1%IGI | 3.82ct | Round | E | VS1 | Ideal
From $762
Compare at $2,181
Save 76%IGI | 3.83ct | Round | E | VS1 | Excellent
From $762
Compare at $3,175
Save 76%IGI | 3.83ct | Round | E | VS1 | Excellent
From $762
Compare at $3,175
Save 76%IGI | 3.83ct | Round | E | VS1 | Excellent
From $762
Compare at $3,175
Save 76%IGI | 3.84ct | Round | E | VS1 | Excellent
From $763
Compare at $3,185
Save 76%IGI | 3.84ct | Round | E | VS1 | Excellent
From $763
Compare at $3,185
Save 76%IGI | 3.84ct | Round | E | VS1 | Excellent
From $763
Compare at $3,185
Save 76%IGI | 3.84ct | Round | E | VS1 | Excellent
From $763
Compare at $3,185
Save 79.6%IGI | 3.86ct | Round | D | VS2 | Excellent
From $764
Compare at $3,740
Save 79.6%IGI | 3.86ct | Round | D | VS2 | Excellent
From $764
Compare at $3,740
Save 75.8%IGI | 3.81ct | Round | E | VS1 | Excellent
From $764
Compare at $3,160
Save 76.1%IGI | 3.85ct | Round | E | VS1 | Excellent
From $765
Compare at $3,195
Save 79.2%IGI | 3.8ct | Round | D | VS2 | Excellent
From $765
Compare at $3,685
Save 76.1%IGI | 3.85ct | Round | E | VS1 | Excellent
From $765
Compare at $3,195
Save 76.1%IGI | 3.85ct | Round | E | VS1 | Excellent
From $765
Compare at $3,195
Save 76%IGI | 3.86ct | Round | E | VS1 | Excellent
From $767
Compare at $3,200
Save 76%IGI | 3.86ct | Round | E | VS1 | Excellent
From $767
Compare at $3,200
Save 76%IGI | 3.86ct | Round | E | VS1 | Excellent
From $767
Compare at $3,200
Save 76%IGI | 3.86ct | Round | E | VS1 | Excellent
From $767
Compare at $3,200
Save 76%IGI | 3.86ct | Round | E | VS1 | Excellent
From $767
Compare at $3,200
Save 12%IGI | 3.84ct | Round | E | VS2 | Ideal
From $768
Compare at $873
Save 12.2%IGI | 3.85ct | Round | E | VS2 | Ideal
From $769
Compare at $876
Save 76%IGI | 3.87ct | Round | E | VS1 | Excellent
From $769
Compare at $3,210
Save 79.6%IGI | 3.89ct | Round | D | VS2 | Excellent
From $769
Compare at $3,770
Save 76%IGI | 3.87ct | Round | E | VS1 | Excellent
From $769
Compare at $3,210
Save 76%IGI | 3.87ct | Round | E | VS1 | Excellent
From $769
Compare at $3,210
Save 76%IGI | 3.87ct | Round | E | VS1 | Excellent
From $769
Compare at $3,210
Save 76%IGI | 3.87ct | Round | E | VS1 | Excellent
From $769
Compare at $3,210
Save 76%IGI | 3.87ct | Round | E | VS1 | Excellent
From $769
Compare at $3,210
Save 79.6%IGI | 3.89ct | Round | D | VS2 | Excellent
From $769
Compare at $3,770
Save 76%IGI | 3.87ct | Round | E | VS1 | Excellent
From $769
Compare at $3,210
Save 76%IGI | 3.87ct | Round | E | VS1 | Excellent
From $769
Compare at $3,210
Save 76%IGI | 3.87ct | Round | E | VS1 | Excellent
From $769
Compare at $3,210
Entry pricing in this category starts around $498.
What to Know When Shopping for 3.8 Carat Round Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $26,581 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 $2,539 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 661 comparable stones in this segment. Prices start around $498 and go up to $27,079.
Based on the latest market data, the average asking price is about $3,545 with a median around $2,539.
The observed spread is roughly $26,581 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 completed market data, the fair market benchmark is $3,545. The median price is $2,539, 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 10 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 $26,581 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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