3.7 Carat Radiant Lab Grown Diamond Prices Comparison
As of February 2026, 3.7 carat radiant lab grown diamonds usually range from $704 to $28,884, with an average price of $2,574.In the last month, prices for these diamonds are down 3.5%.Compare 409 verified listings across 12 retailers tracked by CaratRadar.
3.7 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 409 verified 3.7-carat radiant lab grown diamonds listed across 12 online retailers. Prices in this segment range from $704 to $28,884, with an average asking price of $2,574 and a median of $1,660.
The price spread of $28,180 (97.6% 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.
409 diamonds tracked in this segment
Price range: $704 to $28,884
Average price: $2,574
Median price: $1,660
Available across 12 retailers
Savings potential: up to 97.6%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
409
$704
$2,574
$1,660
$28,884
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
GIASave 66%3.65ct | Radiant | D | VVS1 | Excellent
From $3,671
Compare at $10,810
GIASave 74%3.65ct | Radiant | E | VVS2 | Excellent
From $2,332
Compare at $8,960
IGISave 75.6%3.65ct | Radiant | G | VS1 | Ideal
From $1,295
Compare at $5,310
IGISave 79.1%3.65ct | Radiant | G | VS1 | Ideal
From $1,531
Compare at $7,310
IGISave 87.5%3.65ct | Radiant | G | VS2 | Very Good
From $718
Compare at $5,730
IGISave 12.4%3.65ct | Radiant | E | VVS2 | Excellent
From $6,330
Compare at $7,227
IGISave 20.6%3.65ct | Radiant | E | VVS2 | Ideal
From $5,740
Compare at $7,227
GIASave 81.6%3.65ct | Radiant | E | VVS1 | Excellent
From $2,866
Compare at $15,540
GIASave 68.9%3.65ct | Radiant | D | VVS1 | Excellent
From $3,671
Compare at $11,810
IGISave 81.7%3.65ct | Radiant | D | VVS1 | Ideal
From $3,061
Compare at $16,680
IGISave 75.7%3.65ct | Radiant | E | IF | Very Good
From $3,181
Compare at $13,070
IGISave 43.3%3.65ct | Radiant | F | VS1 | Excellent
From $2,675
Compare at $4,720
IGISave 65.4%3.65ct | Radiant | E | VS1 | Very Good
From $1,892
Compare at $5,470
IGISave 69%3.65ct | Radiant | E | VVS2 | Ideal
From $1,246
Compare at $4,015
IGISave 70.2%3.65ct | Radiant | E | VVS2 | Very Good
From $1,151
Compare at $3,865
IGISave 84.7%3.65ct | Radiant | F | VS1 | Very Good
From $1,106
Compare at $7,220
IGISave 64%3.65ct | Radiant | E | VS1 | Ideal
From $1,127
Compare at $3,135
IGISave 77.9%3.65ct | Radiant | D | VVS2 | Ideal
From $1,469
Compare at $6,640
IGISave 80.4%3.65ct | Radiant | G | SI1 | Very Good
From $989
Compare at $5,060
IGISave 79.7%3.65ct | Radiant | F | VS1 | Very Good
From $1,062
Compare at $5,240
IGISave 75.4%3.65ct | Radiant | D | VS1 | Ideal
From $1,477
Compare at $6,000
IGISave 76%3.65ct | Radiant | E | VS2 | Very Good
From $1,081
Compare at $4,500
IGISave 84.3%3.65ct | Radiant | G | VVS2 | Ideal
From $741
Compare at $4,730
IGISave 84.4%3.65ct | Radiant | E | VS1 | Ideal
From $1,296
Compare at $8,330
IGISave 78.1%3.65ct | Radiant | E | VVS2 | Ideal
From $1,581
Compare at $7,227
IGISave 79.9%3.65ct | Radiant | G | VVS2 | Ideal
From $902
Compare at $4,480
GIASave 57%3.66ct | Radiant | E | VVS2 | Excellent
From $3,942
Compare at $9,170
GIASave 72.7%3.66ct | Radiant | D | VVS2 | Excellent
From $2,425
Compare at $8,890
GIASave 56%3.66ct | Radiant | D | VVS1 | Ideal
From $7,725
Compare at $17,540
GIASave 65.3%3.66ct | Radiant | D | IF | Ideal
From $11,003
Compare at $31,710
GIASave 70.6%3.66ct | Radiant | E | VVS2 | Excellent
From $2,630
Compare at $8,940
GIASave 73.1%3.66ct | Radiant | D | VVS1 | Excellent
From $5,084
Compare at $18,930
GIASave 52.5%3.66ct | Radiant | E | VS1 | Ideal
From $5,174
Compare at $10,890
IGISave 75.6%3.66ct | Radiant | G | VVS2 | Ideal
From $1,311
Compare at $5,370
IGISave 81.7%3.66ct | Radiant | D | VVS1 | Ideal
From $3,081
Compare at $16,800
IGISave 82.3%3.66ct | Radiant | D | IF | Excellent
From $4,870
Compare at $27,469
IGISave 88.3%3.66ct | Radiant | F | VVS2 | Ideal
From $904
Compare at $7,700
IGISave 84.8%3.66ct | Radiant | F | VS1 | Excellent
From $838
Compare at $5,520
GIASave 81.4%3.66ct | Radiant | G | VVS2 | Ideal
From $2,234
Compare at $12,020
IGISave 76.6%3.66ct | Radiant | D | VS1 | Ideal
From $1,481
Compare at $6,340
IGISave 64.4%3.66ct | Radiant | E | VS1 | Very Good
From $1,118
Compare at $3,145
IGISave 61.2%3.66ct | Radiant | E | VVS1 | Ideal
From $2,597
Compare at $6,690
IGISave 28%3.66ct | Radiant | E | VVS2 | Ideal
From $2,614
Compare at $3,633
IGISave 66.5%3.66ct | Radiant | D | VS1 | Ideal
From $1,249
Compare at $3,730
GIASave 20.7%3.66ct | Radiant | D | FL | Ideal
From $27,850
Compare at $35,131
GIASave 67.1%3.66ct | Radiant | D | VVS1 | Excellent
From $3,681
Compare at $11,200
IGISave 84.2%3.66ct | Radiant | F | VVS1 | Ideal
From $1,391
Compare at $8,780
IGISave 82.8%3.66ct | Radiant | D | IF | Ideal
From $4,947
Compare at $28,840
IGISave 73.4%3.66ct | Radiant | D | VVS1 | Excellent
From $2,397
Compare at $9,000
IGISave 84.2%3.66ct | Radiant | D | VVS1 | Excellent
From $2,308
Compare at $14,650
Entry pricing in this category starts around $704.
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 $28,180 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 $1,660 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 409 comparable stones in this segment. Prices start around $704 and go up to $28,884.
Based on the latest market data, the average asking price is about $2,574 with a median around $1,660.
The observed spread is roughly $28,180 across tracked listings, which is about 97.6% 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 $1,660, 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 12 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 $28,180 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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