3.5 Carat Oval Natural Diamond Prices Comparison
As of October 2026, 3.5 carat oval natural diamonds in the 3.50–3.99 carat benchmark range usually range from $1,682 to $152,932, with an average price of $51,920.In the last month, prices for these diamonds are down 0.4%.Compare 277 verified listings across 10 retailers tracked by CaratRadar.
3.5 Carat Oval Natural Diamond Market Overview
CaratRadar currently tracks 277 verified 3.5-carat oval natural diamonds in the 3.50–3.99 carat benchmark range, listed across 10 online retailers. Prices in this segment range from $1,682 to $152,932, with an average asking price of $51,920 and a median of $50,903.
The price spread of $151,250 (98.9% 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 use the same benchmark range throughout the page and 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.
277 diamonds tracked in the 3.50–3.99 carat benchmark
Price range: $1,682 to $152,932
Average price: $51,920
Median price: $50,903
Available across 10 retailers
Savings potential: up to 98.9%
Price Range Overview
As of Oct 14, 2026Real market range for this carat, shape, and diamond type.
277
$1,682
$51,920
$50,903
$152,932
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers in the same benchmark range and open any listing for full details.
Save 40.3%IGI | 3.51ct | Oval | K | SI2 | Ideal
From $8,775
Compare at $14,695
Save 17.5%IGI | 3.5ct | Oval | I | SI2 | Ideal
From $11,239
Compare at $13,627
IGI | 3.51ct | Oval | G | I1 | Ideal
From $11,503
Compare at $12,313
Save 17.5%HRD | 3.5ct | Oval | K | SI2 | Ideal
From $11,787
Compare at $14,292
Save 17.5%IGI | 3.51ct | Oval | J | SI2 | Ideal
From $12,623
Compare at $15,305
IGI | 3.52ct | Oval | E | SI2 | Excellent
From $12,940
Compare at $13,337
Save 18.8%GIA | 3.5ct | Oval | L | SI2 | Very Good
From $13,389
Compare at $16,489
Save 14.7%GIA | 3.51ct | Oval | L | SI2 | Very Good
From $15,222
Compare at $17,835
IGI | 3.5ct | Oval | E | SI2 | Ideal
From $15,328
Compare at $15,798
Save 12.3%HRD | 3.53ct | Oval | J | SI2 | Ideal
From $16,080
Compare at $18,345
Save 18.3%GIA | 3.81ct | Oval | M | SI2 | Ideal
From $16,189
Compare at $19,811
IGI | 3.5ct | Oval | I | SI2 | Ideal
From $16,461
Compare at $16,967
IGI | 3.51ct | Oval | H | SI2 | Ideal
From $18,390
Compare at $18,955
Save 14.9%GIA | 3.72ct | Oval | K | SI2 | Ideal
From $18,569
Compare at $21,813
Save 12.5%GIA | 3.5ct | Oval | I | SI2 | Excellent
From $18,770
Compare at $21,463
Save 10.2%GIA | 3.5ct | Oval | K | SI2 | Excellent
From $19,120
Compare at $21,293
Save 18.3%EGL | 3.51ct | Oval | H | SI1 | Ideal
From $19,269
Compare at $23,580
Save 18.3%IGI | 3.52ct | Oval | J | SI1 | Very Good
From $19,743
Compare at $24,161
Save 13.9%HRD | 3.51ct | Oval | G | SI2 | Ideal
From $20,700
Compare at $24,039
Save 17.1%GIA | 3.5ct | Oval | K | SI2 | Very Good
From $20,992
Compare at $25,325
Save 23.8%GIA | 3.5ct | Oval | K | SI2 | Ideal
From $22,297
Compare at $29,272
GIA | 3.5ct | Oval | L | VVS1 | Excellent
From $22,485
Compare at $24,394
IGI | 3.5ct | Oval | I | SI2 | Ideal
From $22,488
Compare at $22,964
Save 23.5%GIA | 3.51ct | Oval | K | VS1 | Excellent
From $22,785
Compare at $29,793
GIA | 3.5ct | Oval | K | SI2 | Ideal
From $23,511
Compare at $25,325
Save 19.1%IGI | 3.5ct | Oval | I | SI1 | Very Good
From $24,714
Compare at $30,537
GIA | 3.5ct | Oval | J | SI1 | Ideal
From $25,063
Compare at $27,195
Save 19.1%GIA | 3.52ct | Oval | J | SI2 | Ideal
From $25,160
Compare at $31,089
Save 10.8%IGI | 3.56ct | Oval | J | VVS2 | Ideal
From $25,201
Compare at $28,240
Save 10.7%HRD | 3.59ct | Oval | H | SI2 | Ideal
From $25,240
Compare at $28,268
Save 23.7%GIA | 3.71ct | Oval | L | VVS1 | Excellent
From $25,496
Compare at $33,412
Save 14.9%IGI | 3.7ct | Oval | I | SI1 | Very Good
From $25,550
Compare at $30,026
Save 18%GIA | 3.52ct | Oval | J | SI1 | Ideal
From $25,611
Compare at $31,229
Save 22.8%GIA | 3.5ct | Oval | K | VS1 | Excellent
From $26,034
Compare at $33,711
Save 10.8%IGI | 3.52ct | Oval | J | VVS1 | Excellent
From $26,201
Compare at $29,367
IGI | 3.53ct | Oval | I | IF | Ideal
From $26,380
Compare at $28,690
Save 24.7%GIA | 3.51ct | Oval | I | SI2 | Ideal
From $26,768
Compare at $35,539
GIA | 3.51ct | Oval | K | VS1 | Ideal
From $26,797
Compare at $28,715
Save 10.1%HRD | 3.51ct | Oval | K | SI1 | Ideal
From $26,981
Compare at $30,022
Save 14.5%GIA | 3.5ct | Oval | K | VS2 | Excellent
From $27,095
Compare at $31,703
Save 20.8%GIA | 3.51ct | Oval | K | VS1 | Ideal
From $27,154
Compare at $34,294
Save 10.8%IGI | 3.5ct | Oval | I | SI1 | Very Good
From $27,229
Compare at $30,525
Save 24.7%GIA | 3.51ct | Oval | I | SI2 | Ideal
From $27,261
Compare at $36,197
Save 18.8%IGI | 3.5ct | Oval | J | VVS1 | Ideal
From $27,286
Compare at $33,624
Save 20.8%GIA | 3.51ct | Oval | J | SI2 | Ideal
From $27,291
Compare at $34,469
Save 20.8%GIA | 3.52ct | Oval | J | SI2 | Ideal
From $27,367
Compare at $34,566
Save 33.7%GIA | 3.51ct | Oval | I | SI2 | Ideal
From $27,993
Compare at $42,240
Save 19.1%GIA | 3.5ct | Oval | J | SI1 | Excellent
From $28,083
Compare at $34,701
Save 10.8%IGI | 3.5ct | Oval | I | VS2 | Ideal
From $28,422
Compare at $31,868
Save 15.3%IGI | 3.5ct | Oval | I | VS2 | Ideal
From $28,422
Compare at $33,550
Entry pricing in this benchmark range starts around $1,682.
What to Know When Shopping for 3.5 Carat Oval Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $151,250 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 $50,903 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.
- Oval diamonds can appear larger than rounds of the same carat weight due to their elongated face-up area. Watch for the bow-tie effect in lower-quality cuts.
Frequently Asked Questions
We currently track 277 comparable stones in the 3.50–3.99 carat benchmark range. Prices start around $1,682 and go up to $152,932.
Based on the latest market data, the average asking price is about $51,920 with a median around $50,903.
The observed spread is roughly $151,250 across tracked listings, which is about 98.9% from highest to lowest offer in the 3.50–3.99 carat benchmark range.
We refresh pricing data daily so these pages stay current with market changes.
Based on completed market data, the fair market benchmark is $51,920. The median price is $50,903, 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 $151,250 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 the 3.50–3.99 carat Oval diamond benchmark.