3.7 Carat Round Lab Grown Diamond Prices Comparison
As of April 2026, 3.7 carat round lab grown diamonds usually range from $605 to $29,575, with an average price of $3,818.In the last month, prices for these diamonds are down 1.2%.Compare 1,241 verified listings across 10 retailers tracked by CaratRadar.
3.7 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 1,241 verified 3.7-carat round lab grown diamonds listed across 10 online retailers. Prices in this segment range from $605 to $29,575, with an average asking price of $3,818 and a median of $2,790.
The price spread of $28,970 (98.0% 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.
1,241 diamonds tracked in this segment
Price range: $605 to $29,575
Average price: $3,818
Median price: $2,790
Available across 10 retailers
Savings potential: up to 98.0%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
1,241
$605
$3,818
$2,790
$29,575
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 77.5%GCAL | 3.71ct | Round | E | SI1 | Excellent
From $1,560
Compare at $6,920
Save 77.7%GCAL | 3.71ct | Round | F | VVS2 | Excellent
From $2,086
Compare at $9,350
Save 60.3%GIA | 3.71ct | Round | F | VS2 | Excellent
From $4,192
Compare at $10,550
Save 73.1%GIA | 3.71ct | Round | E | VVS1 | Excellent
From $3,433
Compare at $12,780
Save 50%GIA | 3.71ct | Round | D | VS1 | Ideal
From $5,194
Compare at $10,380
Save 73.8%GIA | 3.71ct | Round | D | VVS1 | Excellent
From $5,031
Compare at $19,170
Save 73.2%GIA | 3.71ct | Round | D | VVS1 | Excellent
From $3,640
Compare at $13,590
Save 23.5%GIA | 3.71ct | Round | D | VVS2 | Excellent
From $4,935
Compare at $6,453
Save 47.6%GIA | 3.71ct | Round | D | VVS1 | Ideal
From $7,505
Compare at $14,320
Save 65.3%GIA | 3.71ct | Round | D | IF | Ideal
From $10,801
Compare at $31,150
Save 40.7%GIA | 3.71ct | Round | E | VS1 | Ideal
From $5,565
Compare at $9,390
Save 60.3%GIA | 3.71ct | Round | F | VS2 | Excellent
From $4,192
Compare at $10,550
Save 57.2%GIA | 3.71ct | Round | E | VVS2 | Ideal
From $4,545
Compare at $10,630
Save 60.3%GIA | 3.71ct | Round | F | VS2 | Ideal
From $4,192
Compare at $10,550
Save 59%GIA | 3.71ct | Round | E | VVS2 | Ideal
From $6,047
Compare at $14,760
Save 35.4%GIA | 3.71ct | Round | D | VVS2 | Excellent
From $8,448
Compare at $13,080
Save 65%GIA | 3.71ct | Round | D | VVS2 | Excellent
From $4,126
Compare at $11,800
Save 58.2%GIA | 3.71ct | Round | D | VVS2 | Excellent
From $4,935
Compare at $11,800
Save 73.2%GIA | 3.71ct | Round | D | VVS2 | Excellent
From $3,198
Compare at $11,910
Save 68.1%GIA | 3.71ct | Round | E | VVS2 | Excellent
From $3,045
Compare at $9,550
Save 73.2%GIA | 3.71ct | Round | D | VVS1 | Excellent
From $3,640
Compare at $13,590
Save 77.6%GIA | 3.71ct | Round | D | IF | Excellent
From $6,965
Compare at $31,150
Save 72.2%GIA | 3.71ct | Round | H | VS2 | Excellent
From $2,406
Compare at $8,640
Save 60.2%GIA | 3.71ct | Round | D | IF | Excellent
From $12,405
Compare at $31,150
Save 33.2%GIA | 3.71ct | Round | D | VS1 | Excellent
From $7,466
Compare at $11,170
Save 58.2%GIA | 3.71ct | Round | D | VVS2 | Excellent
From $4,935
Compare at $11,800
Save 77.6%GIA | 3.71ct | Round | D | IF | Excellent
From $6,965
Compare at $31,150
Save 56.7%GIA | 3.71ct | Round | G | VS1 | Ideal
From $4,229
Compare at $9,770
Save 36.2%GIA | 3.71ct | Round | E | VVS2 | Excellent
From $7,531
Compare at $11,810
Save 67%GIA | 3.71ct | Round | F | VVS1 | Excellent
From $3,705
Compare at $11,222
Save 73.5%GIA | 3.71ct | Round | D | VVS1 | Excellent
From $3,640
Compare at $13,730
Save 73.5%GIA | 3.71ct | Round | D | VVS1 | Excellent
From $3,640
Compare at $13,730
Save 74.6%GIA | 3.71ct | Round | G | VVS2 | Excellent
From $2,821
Compare at $11,110
Save 73.2%GIA | 3.71ct | Round | D | VVS2 | Excellent
From $3,198
Compare at $11,910
Save 75.1%GIA | 3.71ct | Round | D | VVS1 | Excellent
From $3,505
Compare at $14,060
Save 73.2%GIA | 3.71ct | Round | D | VVS1 | Excellent
From $3,640
Compare at $13,590
Save 75.1%GIA | 3.71ct | Round | D | VVS1 | Excellent
From $3,505
Compare at $14,060
Save 69.3%GIA | 3.71ct | Round | H | VS2 | Ideal
From $3,154
Compare at $10,280
Save 47%GIA | 3.71ct | Round | D | VVS1 | Excellent
From $7,505
Compare at $14,170
Save 75.1%GIA | 3.71ct | Round | D | VVS1 | Excellent
From $3,505
Compare at $14,060
Save 71%GIA | 3.71ct | Round | D | VS1 | Excellent
From $3,046
Compare at $10,520
Save 73.8%GIA | 3.71ct | Round | D | IF | Excellent
From $12,405
Compare at $47,360
Save 47%GIA | 3.71ct | Round | D | VVS1 | Excellent
From $7,505
Compare at $14,170
Save 75.1%GIA | 3.71ct | Round | D | VVS1 | Excellent
From $3,505
Compare at $14,060
Save 77%IGI | 3.71ct | Round | G | VS1 | Excellent
From $1,044
Compare at $4,530
Save 52.7%IGI | 3.71ct | Round | E | VS1 | Ideal
From $1,200
Compare at $2,539
Save 66%IGI | 3.71ct | Round | H | VS2 | Ideal
From $1,693
Compare at $4,980
Save 83.6%IGI | 3.71ct | Round | G | VS2 | Ideal
From $875
Compare at $5,340
Save 82.6%IGI | 3.71ct | Round | G | VS1 | Excellent
From $1,044
Compare at $6,000
Save 66.4%IGI | 3.71ct | Round | H | VVS2 | Ideal
From $1,245
Compare at $3,700
Entry pricing in this category starts around $605.
What to Know When Shopping for 3.7 Carat Round Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $28,970 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 $2,790 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 1,241 comparable stones in this segment. Prices start around $605 and go up to $29,575.
Based on the latest market data, the average asking price is about $3,818 with a median around $2,790.
The observed spread is roughly $28,970 across tracked listings, which is about 98.0% 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 $2,790, 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 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 $28,970 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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