3.7 Carat Radiant Lab Grown Diamond Prices Comparison
As of May 2026, 3.7 carat radiant lab grown diamonds usually range from $491 to $19,014, with an average price of $3,636.In the last month, prices for these diamonds are down 6.1%.Compare 213 verified listings across 9 retailers tracked by CaratRadar.
3.7 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 213 verified 3.7-carat radiant lab grown diamonds listed across 9 online retailers. Prices in this segment range from $491 to $19,014, with an average asking price of $3,636 and a median of $2,562.
The price spread of $18,523 (97.4% 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.
213 diamonds tracked in this segment
Price range: $491 to $19,014
Average price: $3,636
Median price: $2,562
Available across 9 retailers
Savings potential: up to 97.4%
Price Range Overview
As of May 30, 2026Real market range for this carat, shape, and diamond type.
213
$491
$3,636
$2,562
$19,014
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 76.4%IGI | 3.71ct | Radiant | F | VS1 | Excellent
From $663
Compare at $2,815
Save 66.1%IGI | 3.71ct | Radiant | F | VS1 | Excellent
From $665
Compare at $1,963
Save 77.9%IGI | 3.77ct | Radiant | E | VS1 | Very Good
From $690
Compare at $3,125
Save 78.4%IGI | 3.72ct | Radiant | E | VS1 | Very Good
From $690
Compare at $3,195
Save 78.4%IGI | 3.72ct | Radiant | E | VS1 | Very Good
From $690
Compare at $3,195
IGI | 3.75ct | Radiant | E | VS1 | Very Good
From $695
Compare at $3,110
Save 78.4%IGI | 3.76ct | Radiant | E | VS1 | Very Good
From $697
Compare at $3,230
Save 78.4%IGI | 3.78ct | Radiant | E | VS1 | Very Good
From $701
Compare at $3,250
Save 78.4%IGI | 3.78ct | Radiant | E | VS1 | Very Good
From $701
Compare at $3,250
Save 78.4%IGI | 3.79ct | Radiant | E | VS1 | Very Good
From $702
Compare at $3,255
Save 78.4%IGI | 3.79ct | Radiant | E | VS1 | Ideal
From $702
Compare at $3,255
Save 68%IGI | 3.79ct | Radiant | E | VS1 | Very Good
From $702
Compare at $2,195
Save 67.3%IGI | 3.77ct | Radiant | F | VVS2 | Very Good
From $715
Compare at $2,185
Save 68%IGI | 3.73ct | Radiant | E | VVS2 | Ideal
From $731
Compare at $2,281
Save 68.1%IGI | 3.75ct | Radiant | E | VVS2 | Excellent
From $735
Compare at $2,305
Save 68.2%IGI | 3.76ct | Radiant | E | VVS2 | Ideal
From $737
Compare at $2,317
Save 68.2%IGI | 3.76ct | Radiant | E | VVS2 | Very Good
From $737
Compare at $2,317
Save 67.6%IGI | 3.73ct | Radiant | E | VVS2 | Excellent
From $740
Compare at $2,284
Save 68.4%IGI | 3.78ct | Radiant | E | VVS2 | Very Good
From $740
Compare at $2,341
Save 68.4%IGI | 3.79ct | Radiant | E | VVS2 | Very Good
From $743
Compare at $2,352
Save 67.9%IGI | 3.77ct | Radiant | E | VVS2 | Very Good
From $747
Compare at $2,330
Save 63.4%IGI | 3.78ct | Radiant | F | VS1 | Very Good
From $749
Compare at $2,045
Save 68%IGI | 3.78ct | Radiant | E | VVS2 | Ideal
From $749
Compare at $2,342
Save 68.1%IGI | 3.79ct | Radiant | E | VVS2 | Ideal
From $751
Compare at $2,355
Save 71.3%IGI | 3.76ct | Radiant | E | VS1 | Very Good
From $753
Compare at $2,628
Save 47%IGI | 3.77ct | Radiant | F | VS1 | Ideal
From $753
Compare at $1,421
Save 64.2%IGI | 3.71ct | Radiant | E | VS1 | Very Good
From $760
Compare at $2,123
Save 65.3%IGI | 3.79ct | Radiant | E | VVS2 | Excellent
From $829
Compare at $2,389
Save 63%IGI | 3.71ct | Radiant | E | VVS2 | Ideal
From $853
Compare at $2,305
Save 59.6%IGI | 3.77ct | Radiant | F | VVS2 | Ideal
From $879
Compare at $2,177
Save 62%IGI | 3.75ct | Radiant | E | VVS2 | Very Good
From $889
Compare at $2,342
Save 62.5%IGI | 3.78ct | Radiant | E | VVS2 | Very Good
From $892
Compare at $2,377
Save 10.4%IGI | 3.72ct | Radiant | F | VVS2 | Excellent
From $902
Compare at $1,007
Save 62.3%IGI | 3.79ct | Radiant | E | VVS2 | Ideal
From $907
Compare at $2,404
Save 61.1%IGI | 3.75ct | Radiant | E | VVS2 | Very Good
From $913
Compare at $2,347
Save 61.3%IGI | 3.74ct | Radiant | D | VS2 | Very Good
From $913
Compare at $2,358
Save 55%IGI | 3.72ct | Radiant | F | VS1 | Very Good
From $913
Compare at $2,028
IGI | 3.71ct | Radiant | F | VVS2 | Very Good
From $915
Compare at $2,117
Save 72.4%IGI | 3.74ct | Radiant | FANCY | VVS2 | Very Good
From $918
Compare at $3,327
Save 57.4%IGI | 3.71ct | Radiant | E | VS1 | Very Good
From $920
Compare at $2,161
Save 57.4%IGI | 3.75ct | Radiant | F | VVS2 | Excellent
From $920
Compare at $2,160
Save 57.8%IGI | 3.74ct | Radiant | E | VS1 | Very Good
From $926
Compare at $2,194
Save 57.9%IGI | 3.75ct | Radiant | E | VS1 | Very Good
From $929
Compare at $2,205
Save 54.4%IGI | 3.75ct | Radiant | E | VS2 | Very Good
From $929
Compare at $2,036
Save 72.6%IGI | 3.77ct | Radiant | E | VVS2 | Ideal
From $934
Compare at $3,413
Save 72.4%IGI | 3.77ct | Radiant | FANCY | VS2 | Very Good
From $960
Compare at $3,475
Save 51.6%IGI | 3.76ct | Radiant | F | VS1 | Very Good
From $967
Compare at $2,000
Save 32.3%IGI | 3.72ct | Radiant | E | VVS2 | Excellent
From $989
Compare at $1,461
Save 64.3%IGI | 3.73ct | Radiant | D | VVS2 | Excellent
From $992
Compare at $2,778
Save 43.7%IGI | 3.74ct | Radiant | F | SI1 | Ideal
From $1,007
Compare at $1,790
Entry pricing in this category starts around $491.
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 $18,523 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 $2,562 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 213 comparable stones in this segment. Prices start around $491 and go up to $19,014.
Based on the latest market data, the average asking price is about $3,636 with a median around $2,562.
The observed spread is roughly $18,523 across tracked listings, which is about 97.4% 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 $3,636. The median price is $2,562, 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 9 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 $18,523 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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