3.1 Carat Round Natural Diamond Prices Comparison
As of May 2026, 3.1 carat round natural diamonds usually range from $1,785 to $170,990, with an average price of $48,252.In the last month, prices for these diamonds are up 1.2%.Compare 213 verified listings across 9 retailers tracked by CaratRadar.
3.1 Carat Round Natural Diamond Market Overview
CaratRadar currently tracks 213 verified 3.1-carat round natural diamonds listed across 9 online retailers. Prices in this segment range from $1,785 to $170,990, with an average asking price of $48,252 and a median of $42,028.
The price spread of $169,205 (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.
213 diamonds tracked in this segment
Price range: $1,785 to $170,990
Average price: $48,252
Median price: $42,028
Available across 9 retailers
Savings potential: up to 99.0%
Price Range Overview
As of May 30, 2026Real market range for this carat, shape, and diamond type.
213
$1,785
$48,252
$42,028
$170,990
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 13.3%IGI | 3.16ct | Round | K | SI1 | Excellent
From $12,110
Compare at $13,972
IGI | 3.11ct | Round | J | VS2 | Excellent
From $14,973
Compare at $14,975
Save 20.8%GIA | 3.2ct | Round | L | VVS1 | Excellent
From $15,377
Compare at $19,427
GIA | 3.13ct | Round | L | SI2 | Ideal
From $15,953
Compare at $17,291
Save 17.9%IGI | 3.19ct | Round | K | IF | Excellent
From $16,305
Compare at $19,850
IGI | 3.17ct | Round | K | VVS1 | Excellent
From $18,268
Compare at $18,270
Save 14%GIA | 3.17ct | Round | K | SI1 | Excellent
From $18,652
Compare at $21,700
Save 21.2%GIA | 3.11ct | Round | L | SI2 | Excellent
From $19,096
Compare at $24,228
Save 26.1%GIA | 3.12ct | Round | K | SI2 | Excellent
From $19,271
Compare at $26,067
Save 14.9%GIA | 3.18ct | Round | K | VS2 | Ideal
From $19,299
Compare at $22,690
IGI | 3.2ct | Round | K | VVS1 | Excellent
From $20,871
Compare at $21,329
Save 18.9%GIA | 3.2ct | Round | L | SI2 | Excellent
From $21,749
Compare at $26,826
Save 29.7%GIA | 3.12ct | Round | K | VS2 | Excellent
From $21,859
Compare at $31,092
GIA | 3.18ct | Round | L | VS2 | Excellent
From $21,905
Compare at $22,789
Save 12.6%GIA | 3.2ct | Round | L | VVS2 | Excellent
From $22,124
Compare at $25,301
IGI | 3.13ct | Round | I | VS2 | Ideal
From $22,155
Compare at $22,360
Save 25.8%GIA | 3.11ct | Round | K | SI1 | Excellent
From $22,168
Compare at $29,879
Save 29.7%GIA | 3.12ct | Round | K | VS1 | Excellent
From $22,289
Compare at $31,701
GIA | 3.11ct | Round | K | VS2 | Very Good
From $22,450
Compare at $24,423
GIA | 3.13ct | Round | L | VVS1 | Ideal
From $22,701
Compare at $24,708
Save 34.8%GIA | 3.14ct | Round | L | SI2 | Excellent
From $22,848
Compare at $35,017
Save 29.7%GIA | 3.14ct | Round | K | SI2 | Excellent
From $22,898
Compare at $32,561
Save 18.6%GIA | 3.13ct | Round | I | SI2 | Excellent
From $22,913
Compare at $28,156
Save 35.7%GIA | 3.11ct | Round | J | SI2 | Excellent
From $23,219
Compare at $36,119
Save 17.2%GIA | 3.17ct | Round | I | SI2 | Excellent
From $23,223
Compare at $28,044
Save 11.2%GIA | 3.14ct | Round | K | VVS2 | Ideal
From $23,271
Compare at $26,218
GIA | 3.11ct | Round | L | VS2 | Excellent
From $23,478
Compare at $24,415
Save 15.6%GIA | 3.12ct | Round | J | SI2 | Ideal
From $23,681
Compare at $28,066
Save 15.6%GIA | 3.12ct | Round | J | SI2 | Excellent
From $23,681
Compare at $28,066
Save 44.5%GIA | 3.13ct | Round | J | VS2 | Very Good
From $23,798
Compare at $42,912
Save 22.7%GIA | 3.14ct | Round | L | SI1 | Excellent
From $23,891
Compare at $30,926
Save 30.3%GIA | 3.11ct | Round | J | SI2 | Ideal
From $23,910
Compare at $34,326
GIA | 3.13ct | Round | K | VVS1 | Excellent
From $23,931
Compare at $25,168
GIA | 3.13ct | Round | L | SI2 | Excellent
From $24,451
Compare at $25,892
Save 37%GIA | 3.16ct | Round | J | SI2 | Excellent
From $25,012
Compare at $39,732
GIA | 3.17ct | Round | L | VS1 | Excellent
From $25,098
Compare at $25,861
Save 29.9%GIA | 3.2ct | Round | K | VS1 | Excellent
From $25,130
Compare at $35,831
Save 21.2%GIA | 3.11ct | Round | J | SI2 | Excellent
From $25,152
Compare at $31,905
GIA | 3.19ct | Round | K | SI2 | Excellent
From $25,195
Compare at $27,415
GIA | 3.11ct | Round | I | SI2 | Ideal
From $25,328
Compare at $25,796
Save 17%GIA | 3.18ct | Round | I | SI2 | Excellent
From $25,897
Compare at $31,199
IGI | 3.11ct | Round | I | VS1 | Excellent
From $25,970
Compare at $28,786
Save 36.2%GIA | 3.15ct | Round | J | SI1 | Excellent
From $26,131
Compare at $40,958
GIA | 3.16ct | Round | H | SI2 | Ideal
From $26,140
Compare at $26,777
Save 36.3%GIA | 3.15ct | Round | K | IF | Ideal
From $26,252
Compare at $41,244
Save 29.8%GIA | 3.16ct | Round | K | VVS2 | Excellent
From $26,921
Compare at $38,372
Save 17.1%GIA | 3.13ct | Round | K | SI1 | Excellent
From $26,955
Compare at $32,505
Save 34.9%GIA | 3.16ct | Round | K | VVS1 | Excellent
From $27,329
Compare at $41,996
Save 33.1%GIA | 3.2ct | Round | J | SI2 | Excellent
From $27,993
Compare at $41,818
GIA | 3.2ct | Round | K | VVS1 | Ideal
From $28,025
Compare at $30,741
Entry pricing in this category starts around $1,785.
What to Know When Shopping for 3.1 Carat Round Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $169,205 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 $42,028 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 213 comparable stones in this segment. Prices start around $1,785 and go up to $170,990.
Based on the latest market data, the average asking price is about $48,252 with a median around $42,028.
The observed spread is roughly $169,205 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 $48,252. The median price is $42,028, 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 $169,205 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 3.1 carat Round diamonds.