3.7 Carat Round Natural Diamond Prices Comparison
As of May 2026, 3.7 carat round natural diamonds usually range from $1,868 to $189,000, with an average price of $58,056.In the last month, prices for these diamonds are up 0.4%.Compare 96 verified listings across 9 retailers tracked by CaratRadar.
3.7 Carat Round Natural Diamond Market Overview
CaratRadar currently tracks 96 verified 3.7-carat round natural diamonds listed across 9 online retailers. Prices in this segment range from $1,868 to $189,000, with an average asking price of $58,056 and a median of $51,408.
The price spread of $187,132 (99.0% 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.
96 diamonds tracked in this segment
Price range: $1,868 to $189,000
Average price: $58,056
Median price: $51,408
Available across 9 retailers
Savings potential: up to 99.0%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
96
$1,868
$58,056
$51,408
$189,000
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 35.2%GIA | 3.77ct | Round | L | SI1 | Ideal
From $17,298
Compare at $26,709
IGI | 3.75ct | Round | K | SI1 | Excellent
From $18,668
Compare at $19,335
Save 16.7%GIA | 3.73ct | Round | L | SI1 | Excellent
From $18,689
Compare at $22,443
GIA | 3.73ct | Round | L | VS2 | Ideal
From $18,859
Compare at $20,198
IGI | 3.71ct | Round | J | VS2 | Excellent
From $20,347
Compare at $21,000
IGI | 3.71ct | Round | J | VS1 | Excellent
From $21,775
Compare at $23,279
IGI | 3.75ct | Round | K | VVS2 | Excellent
From $22,785
Compare at $25,236
Save 14%IGI | 3.71ct | Round | K | VVS1 | Excellent
From $23,155
Compare at $26,911
Save 23.3%GIA | 3.79ct | Round | L | VS1 | Excellent
From $29,248
Compare at $38,110
Save 10.6%GIA | 3.71ct | Round | K | SI2 | Excellent
From $29,310
Compare at $32,792
Save 35.6%GIA | 3.72ct | Round | J | SI2 | Excellent
From $32,588
Compare at $50,574
Save 16.2%GIA | 3.76ct | Round | I | SI1 | Excellent
From $34,155
Compare at $40,759
GIA | 3.71ct | Round | J | VS2 | Excellent
From $34,285
Compare at $37,968
Save 30.6%GIA | 3.71ct | Round | L | VVS1 | Excellent
From $34,389
Compare at $49,523
Save 33.2%GIA | 3.71ct | Round | J | SI1 | Excellent
From $34,424
Compare at $51,503
Save 20.3%GIA | 3.71ct | Round | K | SI1 | Excellent
From $34,667
Compare at $43,522
Save 20.3%GIA | 3.71ct | Round | J | SI2 | Good
From $34,709
Compare at $43,575
Save 16%GIA | 3.73ct | Round | J | SI2 | Excellent
From $35,725
Compare at $42,535
GIA | 3.71ct | Round | J | SI2 | Very Good
From $35,810
Compare at $37,023
Save 24.9%GIA | 3.75ct | Round | J | SI1 | Excellent
From $36,094
Compare at $48,042
Save 20.6%GIA | 3.73ct | Round | J | SI1 | Very Good
From $36,695
Compare at $46,195
GIA | 3.78ct | Round | L | VS2 | Excellent
From $36,746
Compare at $39,954
Save 23.4%GIA | 3.72ct | Round | I | SI2 | Excellent
From $37,497
Compare at $48,927
Save 24.6%GIA | 3.75ct | Round | J | SI2 | Excellent
From $37,620
Compare at $49,907
Save 14.6%GIA | 3.75ct | Round | I | SI2 | Excellent
From $37,778
Compare at $44,224
Save 23.4%GIA | 3.73ct | Round | J | SI1 | Excellent
From $38,121
Compare at $49,752
Save 26.4%GIA | 3.71ct | Round | I | SI2 | Excellent
From $38,259
Compare at $51,960
GIA | 3.76ct | Round | J | SI2 | Ideal
From $38,781
Compare at $40,336
GIA | 3.73ct | Round | K | VS1 | Excellent
From $39,195
Compare at $40,752
Save 14.6%GIA | 3.71ct | Round | J | VS1 | Excellent
From $39,423
Compare at $46,148
GIA | 3.79ct | Round | I | SI2 | Very Good
From $39,712
Compare at $44,085
Save 20.3%GIA | 3.71ct | Round | J | SI1 | Excellent
From $40,389
Compare at $50,694
Save 20.6%GIA | 3.79ct | Round | J | SI1 | Excellent
From $40,711
Compare at $51,247
Save 14.6%GIA | 3.72ct | Round | J | VS1 | Excellent
From $40,727
Compare at $47,672
Save 23.5%GIA | 3.74ct | Round | I | SI2 | Excellent
From $41,548
Compare at $54,293
Save 29.5%GIA | 3.71ct | Round | J | VS1 | Excellent
From $41,780
Compare at $59,261
Save 20.6%GIA | 3.76ct | Round | J | SI2 | Ideal
From $42,088
Compare at $52,980
Save 41.8%GIA | 3.75ct | Round | I | SI1 | Ideal
From $42,244
Compare at $72,618
Save 17.5%GIA | 3.78ct | Round | J | VS2 | Very Good
From $42,327
Compare at $51,326
Save 23.5%GIA | 3.72ct | Round | I | SI1 | Excellent
From $42,506
Compare at $55,563
Save 33.4%GIA | 3.77ct | Round | K | IF | Excellent
From $43,655
Compare at $65,569
Save 33.8%GIA | 3.73ct | Round | I | SI1 | Excellent
From $44,166
Compare at $66,685
Save 25%GIA | 3.71ct | Round | I | VS2 | Ideal
From $44,993
Compare at $59,975
Save 24.9%GIA | 3.71ct | Round | I | VS2 | Excellent
From $45,646
Compare at $60,819
Save 10.1%GIA | 3.76ct | Round | J | VVS2 | Excellent
From $46,105
Compare at $51,297
Save 23.6%GIA | 3.76ct | Round | I | VS2 | Excellent
From $47,414
Compare at $62,065
GIA | 3.71ct | Round | H | SI1 | Ideal
From $47,810
Compare at $48,382
Save 30.2%GIA | 3.71ct | Round | H | SI1 | Excellent
From $48,467
Compare at $69,424
Save 35%GIA | 3.77ct | Round | I | VVS2 | Very Good
From $49,804
Compare at $76,569
Save 14.5%GIA | 3.76ct | Round | I | VVS2 | Excellent
From $51,759
Compare at $60,566
Entry pricing in this category starts around $1,868.
What to Know When Shopping for 3.7 Carat Round Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $187,132 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 $51,408 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.
- Compare natural vs. lab-grown options for the same carat and shape. Lab-grown diamonds are chemically identical but often 30-50% less expensive.
- 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 96 comparable stones in this segment. Prices start around $1,868 and go up to $189,000.
Based on the latest market data, the average asking price is about $58,056 with a median around $51,408.
The observed spread is roughly $187,132 across tracked listings, which is about 99.0% 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 $58,056. The median price is $51,408, 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 $187,132 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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Tracking Natural inventory for 3.7 carat Round diamonds.