3.7 Carat Round Natural Diamond Prices Comparison
As of February 2026, 3.7 carat round natural diamonds usually range from $787 to $174,183, with an average price of $51,336.In the last month, prices for these diamonds are down 2.2%.Compare 106 verified listings across 6 retailers tracked by CaratRadar.
3.7 Carat Round Natural Diamond Market Overview
CaratRadar currently tracks 106 verified 3.7-carat round natural diamonds listed across 6 online retailers. Prices in this segment range from $787 to $174,183, with an average asking price of $51,336 and a median of $49,296.
The price spread of $173,396 (99.5% 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.
106 diamonds tracked in this segment
Price range: $787 to $174,183
Average price: $51,336
Median price: $49,296
Available across 6 retailers
Savings potential: up to 99.5%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
106
$787
$51,336
$49,296
$174,183
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 20.3%3.65ct | Round | F | IF | Ideal
From $112,421
Compare at $141,052
GIASave 39.5%3.65ct | Round | G | VVS1 | Excellent
From $71,995
Compare at $118,951
IGISave 68.3%3.65ct | Round | F | VS1 | Excellent
From $877
Compare at $2,770
GIA3.65ct | Round | J | SI1 | Excellent
From $43,047
Compare at $45,250
GIASave 13.9%3.66ct | Round | G | VS1 | Excellent
From $57,748
Compare at $67,049
GIA3.66ct | Round | D | VS1 | Excellent
From $99,612
Compare at $107,623
GIA3.66ct | Round | H | VS2 | Excellent
From $77,740
Compare at $81,951
GIA3.66ct | Round | G | VVS2 | Excellent
From $113,525
Compare at $119,450
GIA3.66ct | Round | J | VVS2 | Excellent
From $47,968
Compare at $50,402
GIASave 63.8%3.67ct | Round | D | VVS1 | Excellent
From $3,319
Compare at $9,160
IGISave 69.6%3.67ct | Round | F | VS1 | Ideal
From $881
Compare at $2,895
GIA3.67ct | Round | H | VVS1 | Excellent
From $82,658
Compare at $91,756
3.67ct | Round | J | VS2 | Excellent
From $42,983
Compare at $50,148
IGISave 69.6%3.68ct | Round | F | VS1 | Ideal
From $883
Compare at $2,905
GIASave 11.8%3.68ct | Round | E | VVS2 | Excellent
From $133,096
Compare at $150,868
GIASave 10.3%3.68ct | Round | I | VS2 | Excellent
From $49,930
Compare at $55,642
GIASave 11.8%3.68ct | Round | E | VVS1 | Excellent
From $130,971
Compare at $148,548
IGISave 69.4%3.68ct | Round | E | VS2 | Excellent
From $878
Compare at $2,870
GIASave 75.9%3.68ct | Round | D | VVS1 | Excellent
From $3,252
Compare at $13,480
GIA3.69ct | Round | J | SI1 | Excellent
From $53,637
Compare at $56,262
3.69ct | Round | J | VS1 | Excellent
From $45,007
Compare at $52,939
IGISave 68.4%3.69ct | Round | F | VS1 | Excellent
From $884
Compare at $2,800
GIASave 36.6%3.69ct | Round | I | SI1 | Ideal
From $49,371
Compare at $77,832
GIASave 16.3%3.69ct | Round | F | VVS2 | Ideal
From $75,627
Compare at $90,385
GIA3.7ct | Round | F | SI1 | Ideal
From $54,010
Compare at $57,773
GIASave 31.8%3.7ct | Round | I | VVS2 | Excellent
From $66,020
Compare at $96,801
GIA3.7ct | Round | D | VS1 | Ideal
From $102,250
Compare at $111,318
3.7ct | Round | K | SI2 | Excellent
From $31,153
Compare at $35,779
GIASave 14.6%3.7ct | Round | I | VS2 | Ideal
From $47,656
Compare at $55,771
GIASave 10.3%3.7ct | Round | H | VS1 | Excellent
From $56,144
Compare at $62,576
GIASave 24.1%3.7ct | Round | H | SI1 | Excellent
From $49,222
Compare at $64,863
GIA3.7ct | Round | I | SI2 | Excellent
From $26,370
Compare at $27,385
GIA3.7ct | Round | D | SI2 | Excellent
From $51,650
Compare at $55,187
GIASave 12.6%3.7ct | Round | F | VS2 | Excellent
From $64,649
Compare at $73,940
3.7ct | Round | G | VS2 | Excellent
From $70,000
Compare at $84,494
GIA3.7ct | Round | L | SI1 | Ideal
From $20,054
Compare at $20,199
GIA3.7ct | Round | F | VS2 | Ideal
From $71,808
Compare at $74,248
GIASave 11%3.7ct | Round | H | VS1 | Excellent
From $68,867
Compare at $77,367
3.7ct | Round | H | VS2 | Excellent
From $54,890
Compare at $67,913
GIASave 19.2%3.7ct | Round | H | VS2 | Excellent
From $52,741
Compare at $65,257
GIA3.7ct | Round | J | SI1 | Excellent
From $48,411
Compare at $50,827
GIA3.7ct | Round | E | VVS1 | Excellent
From $133,035
Compare at $135,290
GIASave 20.2%3.7ct | Round | J | SI1 | Excellent
From $33,797
Compare at $42,353
IGISave 57.6%3.7ct | Round | FANCY | VS1 | Ideal
From $1,848
Compare at $4,355
IGISave 51.1%3.7ct | Round | G | VS1 | Ideal
From $787
Compare at $1,608
GIA3.7ct | Round | E | VVS1 | Excellent
From $77,530
Compare at $81,681
GIA3.7ct | Round | H | VS1 | Excellent
From $75,949
Compare at $80,074
GIASave 36.7%3.7ct | Round | H | VS2 | Excellent
From $58,806
Compare at $92,831
GIASave 13.8%3.7ct | Round | G | VVS2 | Excellent
From $78,632
Compare at $91,273
GIASave 72.3%3.7ct | Round | E | VVS1 | Excellent
From $3,076
Compare at $11,110
Entry pricing in this category starts around $787.
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 $173,396 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 $49,296 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 106 comparable stones in this segment. Prices start around $787 and go up to $174,183.
Based on the latest market data, the average asking price is about $51,336 with a median around $49,296.
The observed spread is roughly $173,396 across tracked listings, which is about 99.5% 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 $49,296, 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 6 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 $173,396 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.