3.7 Carat Radiant Lab Grown Diamond Prices Comparison
As of April 2026, 3.7 carat radiant lab grown diamonds usually range from $605 to $20,678, with an average price of $3,974.In the last month, prices for these diamonds are down 1.4%.Compare 592 verified listings across 11 retailers tracked by CaratRadar.
3.7 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 592 verified 3.7-carat radiant lab grown diamonds listed across 11 online retailers. Prices in this segment range from $605 to $20,678, with an average asking price of $3,974 and a median of $2,907.
The price spread of $20,073 (97.1% 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.
592 diamonds tracked in this segment
Price range: $605 to $20,678
Average price: $3,974
Median price: $2,907
Available across 11 retailers
Savings potential: up to 97.1%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
592
$605
$3,974
$2,907
$20,678
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 76.7%GCAL | 3.71ct | Radiant | D | IF | Excellent
From $7,511
Compare at $32,300
Save 78.2%GIA | 3.71ct | Radiant | D | VS2 | Ideal
From $2,360
Compare at $10,810
Save 66.4%GIA | 3.71ct | Radiant | F | VVS2 | Excellent
From $3,548
Compare at $10,560
Save 75.8%GIA | 3.71ct | Radiant | E | VVS1 | Excellent
From $6,121
Compare at $25,290
Save 73.1%GIA | 3.71ct | Radiant | D | VVS1 | Excellent
From $5,156
Compare at $19,170
Save 73.3%GIA | 3.71ct | Radiant | E | VVS2 | Ideal
From $2,375
Compare at $8,900
Save 72.2%GIA | 3.71ct | Radiant | E | VVS2 | Excellent
From $2,503
Compare at $8,990
Save 61.1%GIA | 3.71ct | Radiant | D | VVS1 | Excellent
From $4,190
Compare at $10,784
Save 42.3%GIA | 3.71ct | Radiant | F | VS1 | Excellent
From $2,817
Compare at $4,884
Save 47.9%GIA | 3.71ct | Radiant | E | VS2 | Excellent
From $2,541
Compare at $4,881
Save 78.2%GIA | 3.71ct | Radiant | F | VS1 | Excellent
From $2,362
Compare at $10,810
Save 73.1%GIA | 3.71ct | Radiant | D | VVS1 | Excellent
From $4,390
Compare at $16,290
Save 67.9%GIA | 3.71ct | Radiant | E | VVS2 | Excellent
From $2,311
Compare at $7,210
Save 78.2%GIA | 3.71ct | Radiant | F | VS1 | Excellent
From $2,362
Compare at $10,810
Save 50.4%IGI | 3.71ct | Radiant | E | VS2 | Ideal
From $2,262
Compare at $4,562
Save 72.1%IGI | 3.71ct | Radiant | G | VS2 | Ideal
From $4,068
Compare at $14,580
Save 37.8%IGI | 3.71ct | Radiant | G | VS1 | Very Good
From $1,291
Compare at $2,077
Save 75.4%IGI | 3.71ct | Radiant | G | VS2 | Ideal
From $993
Compare at $4,040
Save 74.4%IGI | 3.71ct | Radiant | G | VVS2 | Ideal
From $1,108
Compare at $4,320
Save 79.6%IGI | 3.71ct | Radiant | G | VS1 | Ideal
From $1,031
Compare at $5,060
Save 77.4%IGI | 3.71ct | Radiant | E | VS2 | Ideal
From $1,366
Compare at $6,036
Save 80.5%IGI | 3.71ct | Radiant | G | VS1 | Ideal
From $1,031
Compare at $5,290
Save 76.7%IGI | 3.71ct | Radiant | G | VS2 | Ideal
From $993
Compare at $4,260
Save 81.4%IGI | 3.71ct | Radiant | G | VS1 | Ideal
From $1,031
Compare at $5,530
Save 79.4%IGI | 3.71ct | Radiant | D | VVS2 | Excellent
From $2,256
Compare at $10,940
Save 75.6%IGI | 3.71ct | Radiant | D | VVS2 | Ideal
From $1,848
Compare at $7,560
Save 31.2%IGI | 3.71ct | Radiant | D | VVS2 | Ideal
From $1,848
Compare at $2,687
Save 79.5%IGI | 3.71ct | Radiant | E | VVS2 | Excellent
From $1,842
Compare at $9,000
Save 79.5%IGI | 3.71ct | Radiant | E | VVS2 | Excellent
From $1,842
Compare at $9,000
Save 79.4%IGI | 3.71ct | Radiant | D | VVS2 | Excellent
From $2,256
Compare at $10,940
Save 75.6%IGI | 3.71ct | Radiant | D | VVS2 | Ideal
From $1,848
Compare at $7,560
Save 79.4%IGI | 3.71ct | Radiant | D | VVS2 | Excellent
From $2,256
Compare at $10,940
Save 79.1%IGI | 3.71ct | Radiant | F | VS1 | Ideal
From $1,005
Compare at $4,820
Save 68.1%IGI | 3.71ct | Radiant | D | VVS1 | Ideal
From $2,269
Compare at $7,120
Save 81.4%IGI | 3.71ct | Radiant | E | VVS1 | Ideal
From $1,895
Compare at $10,210
Save 78.5%IGI | 3.71ct | Radiant | E | VS1 | Excellent
From $1,723
Compare at $8,010
Save 40.5%IGI | 3.71ct | Radiant | E | VVS2 | Ideal
From $1,290
Compare at $2,170
IGI | 3.71ct | Radiant | E | VS1 | Very Good
From $2,002
Compare at $2,005
Save 30.4%IGI | 3.71ct | Radiant | D | IF | Ideal
From $10,566
Compare at $15,174
Save 41.8%IGI | 3.71ct | Radiant | E | VS1 | Ideal
From $1,056
Compare at $1,814
Save 78.4%IGI | 3.71ct | Radiant | E | VS1 | Excellent
From $1,778
Compare at $8,250
Save 79.5%IGI | 3.71ct | Radiant | E | VS1 | Ideal
From $1,080
Compare at $5,280
Save 77.3%IGI | 3.71ct | Radiant | D | VVS2 | Very Good
From $1,822
Compare at $8,020
Save 75%IGI | 3.71ct | Radiant | D | VVS2 | Ideal
From $1,700
Compare at $6,800
Save 78.2%IGI | 3.71ct | Radiant | E | VS1 | Ideal
From $1,205
Compare at $5,540
Save 74.9%IGI | 3.71ct | Radiant | F | VS2 | Ideal
From $994
Compare at $3,960
Save 84.8%IGI | 3.71ct | Radiant | E | VVS2 | Very Good
From $1,365
Compare at $8,960
Save 65.6%IGI | 3.71ct | Radiant | E | VS1 | Very Good
From $1,057
Compare at $3,075
Save 82.3%IGI | 3.71ct | Radiant | D | VVS2 | Very Good
From $1,270
Compare at $7,170
Save 72.4%IGI | 3.71ct | Radiant | D | VVS1 | Ideal
From $2,359
Compare at $8,560
Entry pricing in this category starts around $605.
What to Know When Shopping for 3.7 Carat Radiant Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $20,073 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 $2,907 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.
- Radiant cuts combine the elegance of emerald shapes with the brilliance of round cuts, offering good value per carat.
Frequently Asked Questions
We currently track 592 comparable stones in this segment. Prices start around $605 and go up to $20,678.
Based on the latest market data, the average asking price is about $3,974 with a median around $2,907.
The observed spread is roughly $20,073 across tracked listings, which is about 97.1% 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 $2,907, 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 11 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 $20,073 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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