3.5 Carat Round Natural Diamond Prices Comparison
As of May 2026, 3.5 carat round natural diamonds usually range from $1,595 to $158,310, with an average price of $49,906.In the last month, prices for these diamonds are up 0.4%.Compare 330 verified listings across 9 retailers tracked by CaratRadar.
3.5 Carat Round Natural Diamond Market Overview
CaratRadar currently tracks 330 verified 3.5-carat round natural diamonds listed across 9 online retailers. Prices in this segment range from $1,595 to $158,310, with an average asking price of $49,906 and a median of $45,460.
The price spread of $156,715 (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.
330 diamonds tracked in this segment
Price range: $1,595 to $158,310
Average price: $49,906
Median price: $45,460
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.
330
$1,595
$49,906
$45,460
$158,310
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 11.9%IGI | 3.5ct | Round | J | SI1 | Excellent
From $15,430
Compare at $17,510
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
GIA | 3.51ct | Round | L | SI2 | Excellent
From $18,452
Compare at $20,022
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
GIA | 3.5ct | Round | J | SI2 | Very Good
From $20,388
Compare at $22,291
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 $26,980
GIA | 3.53ct | Round | L | SI1 | Ideal
From $20,900
Compare at $21,221
Save 10.1%IGI | 3.51ct | Round | J | VVS1 | Excellent
From $21,205
Compare at $23,596
Save 36.8%GIA | 3.51ct | Round | L | SI1 | Excellent
From $21,405
Compare at $33,881
IGI | 3.53ct | Round | I | VS1 | Ideal
From $21,980
Compare at $22,893
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 $30,372
Save 11.2%GIA | 3.53ct | Round | K | SI2 | Excellent
From $22,787
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 $24,218
Save 22.7%GIA | 3.5ct | Round | L | SI1 | Excellent
From $23,056
Compare at $29,834
GIA | 3.51ct | Round | J | SI1 | Ideal
From $23,199
Compare at $25,410
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
Save 17.2%IGI | 3.5ct | Round | J | VS2 | Excellent
From $23,435
Compare at $28,305
Save 15.4%GIA | 3.6ct | Round | L | VS2 | Excellent
From $23,475
Compare at $27,743
IGI | 3.51ct | Round | I | VS2 | Ideal
From $23,605
Compare at $25,098
Save 16.1%GIA | 3.5ct | Round | L | VS2 | Excellent
From $23,838
Compare at $28,407
Save 32.1%GIA | 3.5ct | Round | K | VS2 | Excellent
From $23,909
Compare at $35,235
GIA | 3.51ct | Round | K | SI2 | Excellent
From $24,205
Compare at $25,679
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
IGI | 3.51ct | Round | K | SI1 | Very Good
From $24,520
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 20.8%GIA | 3.5ct | Round | K | VVS2 | Ideal
From $24,653
Compare at $31,126
Save 34.2%GIA | 3.5ct | Round | K | VS2 | Excellent
From $25,115
Compare at $38,161
Save 11.3%GIA | 3.5ct | Round | K | SI2 | Excellent
From $25,366
Compare at $28,604
Save 37.4%GIA | 3.53ct | Round | L | VS2 | Excellent
From $25,453
Compare at $40,685
GIA | 3.5ct | Round | K | VS2 | Excellent
From $25,474
Compare at $27,678
Save 29.9%GIA | 3.51ct | Round | K | SI1 | Excellent
From $25,596
Compare at $36,492
GIA | 3.5ct | Round | L | VS2 | Excellent
From $25,769
Compare at $29,584
GIA | 3.51ct | Round | J | SI1 | Ideal
From $26,130
Compare at $28,389
Save 11.4%GIA | 3.5ct | Round | L | VVS2 | Excellent
From $26,251
Compare at $29,615
Save 31.3%GIA | 3.5ct | Round | K | VVS2 | Excellent
From $26,425
Compare at $38,476
GIA | 3.5ct | Round | K | VS1 | Ideal
From $26,582
Compare at $29,192
Save 18.2%GIA | 3.5ct | Round | L | VVS1 | Excellent
From $27,030
Compare at $33,031
GIA | 3.5ct | Round | K | SI1 | Ideal
From $27,065
Compare at $29,404
Save 10.7%GIA | 3.51ct | Round | J | SI2 | Ideal
From $27,240
Compare at $30,516
GIA | 3.5ct | Round | J | VVS2 | Excellent
From $27,247
Compare at $29,601
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 $156,715 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 $45,460 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 330 comparable stones in this segment. Prices start around $1,595 and go up to $158,310.
Based on the latest market data, the average asking price is about $49,906 with a median around $45,460.
The observed spread is roughly $156,715 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 $49,906. The median price is $45,460, 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 $156,715 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.