3.5 Carat Round Natural Diamond Prices Comparison
As of May 2026, 3.5 carat round natural diamonds usually range from $1,595 to $158,321, with an average price of $49,927.In the last month, prices for these diamonds are up 0.5%.Compare 367 verified listings across 10 retailers tracked by CaratRadar.
3.5 Carat Round Natural Diamond Market Overview
CaratRadar currently tracks 367 verified 3.5-carat round natural diamonds listed across 10 online retailers. Prices in this segment range from $1,595 to $158,321, with an average asking price of $49,927 and a median of $45,447.
The price spread of $156,726 (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.
367 diamonds tracked in this segment
Price range: $1,595 to $158,321
Average price: $49,927
Median price: $45,447
Available across 10 retailers
Savings potential: up to 99.0%
Price Range Overview
As of May 28, 2026Real market range for this carat, shape, and diamond type.
367
$1,595
$49,927
$45,447
$158,321
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
IGI | 3.5ct | Round | F | I1 | Ideal
From $11,234
Compare at $12,395
Save 13.3%IGI | 3.5ct | Round | L | VS2 | Ideal
From $12,514
Compare at $14,442
Save 11.9%IGI | 3.5ct | Round | J | SI1 | Excellent
From $15,428
Compare at $17,510
Save 18.2%GIA | 3.51ct | Round | L | SI2 | Excellent
From $16,376
Compare at $20,022
Save 12%IGI | 3.52ct | Round | K | VS2 | Excellent
From $16,419
Compare at $18,651
Save 15.1%IGI | 3.5ct | Round | K | SI1 | Excellent
From $16,880
Compare at $19,892
GIA | 3.5ct | Round | L | SI1 | Excellent
From $17,452
Compare at $18,697
Save 14.7%IGI | 3.51ct | Round | L | VS1 | Ideal
From $18,364
Compare at $21,525
Save 17.4%GIA | 3.5ct | Round | J | SI2 | Very Good
From $18,421
Compare at $22,290
IGI | 3.5ct | Round | J | SI1 | Ideal
From $19,340
Compare at $20,121
Save 15%GIA | 3.51ct | Round | L | SI1 | Ideal
From $19,546
Compare at $22,985
GIA | 3.5ct | Round | K | SI2 | Excellent
From $19,649
Compare at $21,537
Save 26.1%GIA | 3.51ct | Round | L | SI1 | Excellent
From $20,116
Compare at $27,206
Save 38.9%GIA | 3.5ct | Round | L | SI1 | Excellent
From $20,502
Compare at $33,548
Save 22.9%GIA | 3.51ct | Round | K | SI1 | Excellent
From $20,791
Compare at $26,979
Save 35.7%GIA | 3.52ct | Round | K | SI1 | Excellent
From $20,866
Compare at $32,427
GIA | 3.53ct | Round | L | SI1 | Ideal
From $20,900
Compare at $21,969
GIA | 3.53ct | Round | J | I1 | Good
From $21,194
Compare at $21,366
Save 10.1%IGI | 3.51ct | Round | J | VVS1 | Excellent
From $21,204
Compare at $23,596
Save 36.8%GIA | 3.51ct | Round | L | SI1 | Excellent
From $21,405
Compare at $33,881
IGI | 3.5ct | Round | I | SI2 | Ideal
From $21,632
Compare at $21,933
IGI | 3.53ct | Round | I | VS1 | Ideal
From $21,980
Compare at $22,893
Save 25.7%GIA | 3.5ct | Round | L | VVS2 | Excellent
From $21,999
Compare at $29,615
Save 34.9%GIA | 3.51ct | Round | J | SI2 | Ideal
From $22,240
Compare at $34,164
Save 25.8%GIA | 3.51ct | Round | L | SI1 | Excellent
From $22,548
Compare at $30,371
Save 11.7%GIA | 3.53ct | Round | K | SI2 | Excellent
From $22,675
Compare at $25,674
Save 19.7%GIA | 3.5ct | Round | L | SI2 | Excellent
From $22,813
Compare at $28,421
GIA | 3.5ct | Round | J | SI2 | Very Good
From $22,825
Compare at $24,217
Save 22.7%GIA | 3.5ct | Round | L | SI1 | Excellent
From $23,056
Compare at $29,834
GIA | 3.5ct | Round | L | SI1 | Ideal
From $23,234
Compare at $23,950
GIA | 3.55ct | Round | L | VS2 | Excellent
From $23,328
Compare at $25,655
IGI | 3.5ct | Round | H | SI2 | Ideal
From $23,407
Compare at $24,721
GIA | 3.58ct | Round | K | SI2 | Ideal
From $23,424
Compare at $25,942
GIA | 3.51ct | Round | J | SI1 | Ideal
From $23,432
Compare at $25,410
Save 17.2%IGI | 3.5ct | Round | J | VS2 | Excellent
From $23,435
Compare at $28,305
IGI | 3.51ct | Round | I | VS2 | Ideal
From $23,605
Compare at $25,098
Save 14.9%GIA | 3.6ct | Round | L | VS2 | Excellent
From $23,610
Compare at $27,743
Save 26.4%GIA | 3.5ct | Round | L | VVS1 | Excellent
From $23,737
Compare at $32,264
Save 32.1%GIA | 3.5ct | Round | K | VS2 | Excellent
From $23,909
Compare at $35,235
Save 15.4%GIA | 3.5ct | Round | L | VS2 | Excellent
From $24,039
Compare at $28,407
GIA | 3.54ct | Round | L | VS2 | Excellent
From $24,206
Compare at $25,167
GIA | 3.52ct | Round | K | IF | Excellent
From $24,313
Compare at $26,855
GIA | 3.5ct | Round | L | VS2 | Ideal
From $24,497
Compare at $27,130
IGI | 3.51ct | Round | K | SI1 | Very Good
From $24,519
Compare at $24,520
Save 17.2%GIA | 3.51ct | Round | J | SI2 | Excellent
From $24,527
Compare at $29,613
Save 37.5%GIA | 3.5ct | Round | K | SI1 | Excellent
From $24,618
Compare at $39,358
Save 39.4%GIA | 3.53ct | Round | L | VS2 | Excellent
From $24,641
Compare at $40,685
Save 20.8%GIA | 3.5ct | Round | K | VVS2 | Ideal
From $24,653
Compare at $31,126
GIA | 3.51ct | Round | K | SI2 | Excellent
From $24,874
Compare at $25,679
GIA | 3.5ct | Round | I | SI2 | Excellent
From $25,110
Compare at $26,610
Entry pricing in this category starts around $1,595.
What to Know When Shopping for 3.5 Carat Round Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $156,726 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 $45,447 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 367 comparable stones in this segment. Prices start around $1,595 and go up to $158,321.
Based on the latest market data, the average asking price is about $49,927 with a median around $45,447.
The observed spread is roughly $156,726 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 $49,927. The median price is $45,447, 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 10 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 $156,726 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 3.5 carat Round diamonds.