3.1 Carat Round Natural Diamond Prices Comparison
As of February 2026, 3.1 carat round natural diamonds usually range from $738 to $243,999, with an average price of $23,004.In the last month, prices for these diamonds are down 3.3%.Compare 452 verified listings across 8 retailers tracked by CaratRadar.
3.1 Carat Round Natural Diamond Market Overview
CaratRadar currently tracks 452 verified 3.1-carat round natural diamonds listed across 8 online retailers. Prices in this segment range from $738 to $243,999, with an average asking price of $23,004 and a median of $2,785.
The price spread of $243,261 (99.7% 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.
452 diamonds tracked in this segment
Price range: $738 to $243,999
Average price: $23,004
Median price: $2,785
Available across 8 retailers
Savings potential: up to 99.7%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
452
$738
$23,004
$2,785
$243,999
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 11.9%3.05ct | Round | H | SI1 | Excellent
From $31,267
Compare at $35,491
GIASave 36.9%3.05ct | Round | K | SI1 | Excellent
From $23,484
Compare at $37,213
GIASave 63.3%3.05ct | Round | D | VVS1 | Excellent
From $2,795
Compare at $7,613
GIASave 12.6%3.05ct | Round | H | SI2 | Excellent
From $32,300
Compare at $36,941
IGISave 15.4%3.05ct | Round | F | VVS2 | Ideal
From $1,045
Compare at $1,236
IGISave 67.3%3.05ct | Round | F | VVS2 | Excellent
From $1,045
Compare at $3,200
IGISave 50.4%3.05ct | Round | F | VVS2 | Ideal
From $759
Compare at $1,531
IGISave 66.4%3.05ct | Round | E | VVS2 | Ideal
From $888
Compare at $2,644
IGISave 14.7%3.05ct | Round | D | VS2 | Ideal
From $869
Compare at $1,018
IGISave 15.9%3.05ct | Round | E | VVS2 | Ideal
From $863
Compare at $1,026
IGISave 30.6%3.05ct | Round | F | VVS2 | Ideal
From $787
Compare at $1,133
IGISave 69.2%3.05ct | Round | E | VS1 | Ideal
From $808
Compare at $2,620
IGISave 69.2%3.05ct | Round | E | VS1 | Ideal
From $808
Compare at $2,620
IGISave 14.6%3.05ct | Round | E | VVS2 | Ideal
From $980
Compare at $1,147
IGISave 63.3%3.05ct | Round | D | VS1 | Ideal
From $1,141
Compare at $3,110
IGISave 60.1%3.05ct | Round | FANCY | VS1 | Ideal
From $1,561
Compare at $3,914
IGISave 66.4%3.05ct | Round | F | VS2 | Ideal
From $777
Compare at $2,315
IGISave 71.2%3.05ct | Round | D | VVS2 | Ideal
From $1,105
Compare at $3,840
GIA3.05ct | Round | J | VVS2 | Excellent
From $35,123
Compare at $35,963
GIA3.05ct | Round | G | VS2 | Excellent
From $52,265
Compare at $57,042
GIASave 54.1%3.05ct | Round | D | VVS2 | Excellent
From $2,084
Compare at $4,540
GIA3.05ct | Round | H | VVS1 | Ideal
From $50,366
Compare at $52,801
GIASave 11%3.05ct | Round | G | VS1 | Excellent
From $52,636
Compare at $59,134
GIA3.05ct | Round | K | VVS1 | Excellent
From $37,684
Compare at $39,673
GIA3.05ct | Round | K | VS2 | Excellent
From $19,831
Compare at $19,970
GIASave 31.5%3.05ct | Round | D | VVS1 | Excellent
From $2,515
Compare at $3,671
GIA3.05ct | Round | I | VVS2 | Excellent
From $42,912
Compare at $43,553
GIASave 19.1%3.05ct | Round | D | SI2 | Excellent
From $44,215
Compare at $54,637
GIASave 28.9%3.05ct | Round | K | SI2 | Excellent
From $15,891
Compare at $22,363
GIASave 32.4%3.05ct | Round | E | VS1 | Excellent
From $2,078
Compare at $3,075
GIASave 77.8%3.05ct | Round | E | VS1 | Excellent
From $1,577
Compare at $7,120
IGI3.05ct | Round | H | VVS1 | Ideal
From $35,150
Compare at $36,866
IGISave 30.2%3.05ct | Round | E | VVS2 | Ideal
From $774
Compare at $1,109
IGISave 66.4%3.05ct | Round | E | VVS2 | Ideal
From $888
Compare at $2,644
IGISave 66%3.05ct | Round | E | VVS2 | Excellent
From $845
Compare at $2,483
IGISave 15.7%3.05ct | Round | D | VS1 | Ideal
From $2,048
Compare at $2,429
IGISave 81.7%3.05ct | Round | E | VS1 | Ideal
From $829
Compare at $4,540
IGISave 63.6%3.05ct | Round | D | VVS1 | Ideal
From $1,887
Compare at $5,178
GIASave 21.4%3.05ct | Round | D | VS2 | Excellent
From $51,169
Compare at $65,082
IGISave 69.2%3.05ct | Round | E | VS1 | Ideal
From $808
Compare at $2,620
GIASave 37.1%3.05ct | Round | I | VVS1 | Excellent
From $47,806
Compare at $76,043
GIA3.05ct | Round | F | IF | Excellent
From $115,404
Compare at $121,420
GIASave 36.7%3.05ct | Round | D | SI1 | Excellent
From $37,643
Compare at $59,474
GIASave 34.5%3.05ct | Round | E | VVS1 | Excellent
From $1,927
Compare at $2,942
GIA3.05ct | Round | D | FL | Excellent
From $243,999
Compare at $263,598
GIASave 10.7%3.05ct | Round | J | VS2 | Excellent
From $36,125
Compare at $40,461
GIA3.05ct | Round | H | SI2 | Excellent
From $30,990
Compare at $32,679
GIASave 13%3.05ct | Round | D | SI2 | Excellent
From $35,950
Compare at $41,304
IGISave 88.1%3.05ct | Round | D | VVS2 | Ideal
From $1,050
Compare at $8,810
IGISave 66.4%3.05ct | Round | F | VS2 | Ideal
From $777
Compare at $2,315
Entry pricing in this category starts around $738.
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 $243,261 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 $2,785 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 452 comparable stones in this segment. Prices start around $738 and go up to $243,999.
Based on the latest market data, the average asking price is about $23,004 with a median around $2,785.
The observed spread is roughly $243,261 across tracked listings, which is about 99.7% 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 $2,785, 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 8 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 $243,261 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.