1.5 Carat Oval Natural Diamond Prices Comparison
As of October 2026, 1.5 carat oval natural diamonds in the 1.50–1.74 carat benchmark range usually range from $457 to $38,482, with an average price of $8,776.In the last month, prices for these diamonds are down 1.1%.Compare 6,645 verified listings across 13 retailers tracked by CaratRadar.
1.5 Carat Oval Natural Diamond Market Overview
CaratRadar currently tracks 6,645 verified 1.5-carat oval natural diamonds in the 1.50–1.74 carat benchmark range, listed across 13 online retailers. Prices in this segment range from $457 to $38,482, with an average asking price of $8,776 and a median of $8,460.
The price spread of $38,025 (98.8% 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.
6,645 diamonds tracked in the 1.50–1.74 carat benchmark
Price range: $457 to $38,482
Average price: $8,776
Median price: $8,460
Available across 13 retailers
Savings potential: up to 98.8%
Price Range Overview
As of Oct 13, 2026Real market range for this carat, shape, and diamond type.
6,645
$457
$8,776
$8,460
$38,482
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.
IGI | 1.51ct | Oval | F | I1 | Very Good
From $874
Compare at $962
GIA | 1.5ct | Oval | L | I1 | Excellent
From $1,169
Compare at $1,268
Save 19.7%IGI | 1.51ct | Oval | L | SI2 | Excellent
From $1,486
Compare at $1,850
Save 14.8%IGI | 1.51ct | Oval | G | I1 | Ideal
From $1,533
Compare at $1,800
Save 13.9%IGI | 1.5ct | Oval | D | I1 | Ideal
From $1,542
Compare at $1,791
Save 35.7%GIA | 1.61ct | Oval | L | SI1 | Excellent
From $1,560
Compare at $2,427
Save 21%GIA | 1.51ct | Oval | L | SI2 | Excellent
From $1,587
Compare at $2,008
Save 13.1%IGI | 1.5ct | Oval | L | SI2 | Ideal
From $1,638
Compare at $1,884
Save 13.1%IGI | 1.5ct | Oval | L | SI2 | Ideal
From $1,638
Compare at $1,884
Save 13.1%IGI | 1.5ct | Oval | L | SI2 | Ideal
From $1,659
Compare at $1,909
IGI | 1.51ct | Oval | I | SI2 | Excellent
From $1,673
Save 13.1%IGI | 1.52ct | Oval | K | I1 | Ideal
From $1,678
Compare at $1,931
IGI | 1.51ct | Oval | G | SI2 | Very Good
From $1,711
IGI | 1.51ct | Oval | I | SI2 | Very Good
From $1,723
Compare at $1,818
Save 13.1%IGI | 1.51ct | Oval | K | SI2 | Ideal
From $1,727
Compare at $1,987
Save 13.2%IGI | 1.5ct | Oval | I | I1 | Ideal
From $1,733
Compare at $1,996
Save 21.7%GIA | 1.5ct | Oval | L | SI2 | Excellent
From $1,747
Compare at $2,231
IGI | 1.5ct | Oval | H | SI2 | Very Good
From $1,756
Compare at $1,772
Save 35.3%GIA | 1.5ct | Oval | L | SI2 | Very Good
From $1,762
Compare at $2,721
IGI | 1.51ct | Oval | H | SI2 | Ideal
From $1,768
Compare at $1,783
Save 33%GIA | 1.5ct | Oval | K | SI2 | Excellent
From $1,769
Compare at $2,640
Save 13.9%IGI | 1.5ct | Oval | K | SI2 | Ideal
From $1,769
Compare at $2,054
Save 13.9%IGI | 1.51ct | Oval | K | SI2 | Ideal
From $1,781
Compare at $2,068
Save 21.7%IGI | 1.5ct | Oval | K | SI1 | Very Good
From $1,783
Compare at $2,278
IGI | 1.51ct | Oval | G | SI2 | Ideal
From $1,792
Compare at $1,808
HRD | 1.7ct | Oval | I | SI2 | Ideal
From $1,795
Compare at $1,810
Save 39%GIA | 1.51ct | Oval | L | SI2 | Excellent
From $1,796
Compare at $2,945
Save 21.7%IGI | 1.5ct | Oval | L | VS1 | Very Good
From $1,796
Compare at $2,293
Save 40.7%GIA | 1.51ct | Oval | L | SI1 | Excellent
From $1,807
Compare at $3,045
Save 23.2%GIA | 1.51ct | Oval | L | SI2 | Ideal
From $1,814
Compare at $2,361
Save 23.1%GIA | 1.52ct | Oval | L | SI1 | Excellent
From $1,819
Compare at $2,366
IGI | 1.5ct | Oval | J | SI2 | Ideal
From $1,828
Compare at $1,871
Save 21.7%IGI | 1.54ct | Oval | K | SI1 | Very Good
From $1,830
Compare at $2,338
Save 17.2%GIA | 1.5ct | Oval | L | VS2 | Excellent
From $1,836
Compare at $2,217
Save 14%IGI | 1.51ct | Oval | K | SI2 | Ideal
From $1,857
Compare at $2,159
Save 14%IGI | 1.5ct | Oval | H | I1 | Ideal
From $1,859
Compare at $2,162
Save 38.5%GIA | 1.5ct | Oval | L | SI1 | Excellent
From $1,861
Compare at $3,024
Save 21.7%IGI | 1.5ct | Oval | K | SI1 | Very Good
From $1,864
Compare at $2,380
Save 21.7%GIA | 1.5ct | Oval | M | VS2 | Ideal
From $1,868
Compare at $2,385
Save 21.7%GIA | 1.5ct | Oval | M | SI2 | Ideal
From $1,869
Compare at $2,388
Save 37.1%GIA | 1.51ct | Oval | L | SI2 | Excellent
From $1,871
Compare at $2,976
Save 20.3%GIA | 1.51ct | Oval | L | SI1 | Excellent
From $1,873
Compare at $2,351
Save 21.7%IGI | 1.5ct | Oval | K | VS2 | Very Good
From $1,873
Compare at $2,393
Save 21.7%IGI | 1.51ct | Oval | K | SI1 | Very Good
From $1,876
Compare at $2,396
Save 35.2%GIA | 1.5ct | Oval | L | SI1 | Good
From $1,879
Compare at $2,901
Save 14%IGI | 1.52ct | Oval | J | I1 | Very Good
From $1,888
Compare at $2,195
IGI | 1.5ct | Oval | G | SI2 | Excellent
From $1,891
Compare at $1,907
Save 25.6%IGI | 1.5ct | Oval | J | SI1 | Very Good
From $1,894
Compare at $2,545
Save 25.7%GIA | 1.5ct | Oval | K | SI1 | Very Good
From $1,904
Compare at $2,564
IGI | 1.5ct | Oval | I | SI2 | Excellent
From $1,905
Compare at $1,922
Entry pricing in this benchmark range starts around $457.
What to Know When Shopping for 1.5 Carat Oval Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $38,025 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 $8,460 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.
- 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 6,645 comparable stones in the 1.50–1.74 carat benchmark range. Prices start around $457 and go up to $38,482.
Based on the latest market data, the average asking price is about $8,776 with a median around $8,460.
The observed spread is roughly $38,025 across tracked listings, which is about 98.8% from highest to lowest offer in the 1.50–1.74 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 $8,776. The median price is $8,460, 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 13 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 $38,025 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 1.50–1.74 carat Oval diamond benchmark.