3.7 Carat Round Lab Grown Diamond Prices Comparison
As of February 2026, 3.7 carat round lab grown diamonds usually range from $615 to $29,580, with an average price of $2,021.In the last month, prices for these diamonds are down 3.5%.Compare 1,369 verified listings across 11 retailers tracked by CaratRadar.
3.7 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 1,369 verified 3.7-carat round lab grown diamonds listed across 11 online retailers. Prices in this segment range from $615 to $29,580, with an average asking price of $2,021 and a median of $1,222.
The price spread of $28,965 (97.9% 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.
1,369 diamonds tracked in this segment
Price range: $615 to $29,580
Average price: $2,021
Median price: $1,222
Available across 11 retailers
Savings potential: up to 97.9%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
1,369
$615
$2,021
$1,222
$29,580
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
GCALSave 76%3.65ct | Round | D | IF | Excellent
From $6,281
Compare at $26,150
IGISave 64.7%3.65ct | Round | E | VS1 | Excellent
From $1,069
Compare at $3,025
GIASave 17.9%3.65ct | Round | F | VS1 | Excellent
From $6,046
Compare at $7,360
GIASave 81.9%3.65ct | Round | D | VVS2 | Excellent
From $3,122
Compare at $17,210
IGISave 76.4%3.65ct | Round | G | SI1 | Excellent
From $1,027
Compare at $4,360
IGISave 71.7%3.65ct | Round | E | VVS1 | Ideal
From $3,167
Compare at $11,200
IGISave 76.1%3.65ct | Round | H | VS1 | Ideal
From $882
Compare at $3,690
IGISave 56.2%3.65ct | Round | G | VS1 | Ideal
From $858
Compare at $1,956
IGISave 81.3%3.65ct | Round | G | VS1 | Ideal
From $679
Compare at $3,640
IGISave 80.7%3.65ct | Round | H | VS1 | Ideal
From $644
Compare at $3,330
IGISave 74%3.65ct | Round | G | VS1 | Ideal
From $956
Compare at $3,680
IGISave 61.5%3.65ct | Round | E | VVS1 | Excellent
From $1,874
Compare at $4,866
IGISave 77.9%3.65ct | Round | E | VVS2 | Ideal
From $2,017
Compare at $9,140
IGISave 85.5%3.65ct | Round | D | VVS2 | Ideal
From $1,533
Compare at $10,550
IGISave 84.9%3.65ct | Round | E | VS1 | Excellent
From $1,256
Compare at $8,300
IGISave 68.9%3.65ct | Round | F | VS2 | Ideal
From $861
Compare at $2,770
IGISave 69.5%3.65ct | Round | F | VS1 | Excellent
From $877
Compare at $2,880
IGISave 67.6%3.65ct | Round | F | VS2 | Excellent
From $861
Compare at $2,660
IGISave 70.4%3.65ct | Round | E | VS2 | Excellent
From $873
Compare at $2,955
GIASave 73.1%3.65ct | Round | D | VS1 | Excellent
From $3,468
Compare at $12,910
GIASave 81.6%3.65ct | Round | D | VVS1 | Excellent
From $2,459
Compare at $13,370
GIASave 82.2%3.65ct | Round | D | VVS1 | Excellent
From $2,373
Compare at $13,370
GIASave 82.2%3.65ct | Round | D | VVS1 | Excellent
From $2,373
Compare at $13,370
GIASave 72.3%3.65ct | Round | D | VS1 | Excellent
From $2,747
Compare at $9,930
GIASave 81.6%3.65ct | Round | D | VVS1 | Excellent
From $2,459
Compare at $13,370
IGISave 60.1%3.65ct | Round | G | VS1 | Ideal
From $1,119
Compare at $2,806
IGISave 80.8%3.65ct | Round | F | SI1 | Ideal
From $621
Compare at $3,240
IGISave 80.8%3.65ct | Round | F | SI1 | Ideal
From $621
Compare at $3,240
IGISave 76.9%3.65ct | Round | F | VS2 | Excellent
From $1,426
Compare at $6,160
IGISave 78.6%3.65ct | Round | G | VS1 | Excellent
From $1,108
Compare at $5,180
IGISave 85%3.65ct | Round | G | VS1 | Ideal
From $931
Compare at $6,220
IGISave 67.2%3.65ct | Round | G | SI1 | Ideal
From $1,026
Compare at $3,129
IGISave 81.5%3.65ct | Round | G | VS1 | Ideal
From $679
Compare at $3,680
IGISave 81.5%3.65ct | Round | G | VS1 | Ideal
From $674
Compare at $3,640
IGISave 77.6%3.65ct | Round | G | VS1 | Ideal
From $1,108
Compare at $4,940
IGISave 81.5%3.65ct | Round | G | VS1 | Ideal
From $674
Compare at $3,640
IGISave 66.8%3.65ct | Round | E | VS2 | Ideal
From $968
Compare at $2,917
IGISave 81.4%3.65ct | Round | D | VVS1 | Ideal
From $2,154
Compare at $11,550
IGISave 80.7%3.65ct | Round | D | IF | Ideal
From $4,024
Compare at $20,870
IGISave 70.7%3.65ct | Round | F | VS2 | Ideal
From $813
Compare at $2,770
IGISave 80.1%3.65ct | Round | D | VVS2 | Ideal
From $1,425
Compare at $7,150
IGISave 88.4%3.65ct | Round | F | VVS2 | Ideal
From $940
Compare at $8,080
IGISave 56.7%3.65ct | Round | FANCY | SI1 | Ideal
From $1,693
Compare at $3,913
IGISave 82.9%3.65ct | Round | D | IF | Ideal
From $3,568
Compare at $20,920
3.65ct | Round | E | VS1 | Excellent
From $1,108
Compare at $8,300
IGISave 73.6%3.65ct | Round | D | VVS2 | Ideal
From $1,212
Compare at $4,595
IGISave 68.9%3.65ct | Round | F | VS2 | Excellent
From $861
Compare at $2,770
GIASave 77.5%3.65ct | Round | D | VVS1 | Excellent
From $3,038
Compare at $13,510
GIASave 77.5%3.65ct | Round | D | VVS1 | Excellent
From $3,038
Compare at $13,510
GIASave 59.6%3.65ct | Round | F | VS2 | Excellent
From $4,198
Compare at $10,380
Entry pricing in this category starts around $615.
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 $28,965 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 $1,222 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 1,369 comparable stones in this segment. Prices start around $615 and go up to $29,580.
Based on the latest market data, the average asking price is about $2,021 with a median around $1,222.
The observed spread is roughly $28,965 across tracked listings, which is about 97.9% 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 $1,222, 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 $28,965 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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