1.5 Carat Round Natural Diamond Prices Comparison
As of May 2026, 1.5 carat round natural diamonds usually range from $625 to $25,895, with an average price of $8,538.In the last month, prices for these diamonds are up 0.7%.Compare 9,790 verified listings across 11 retailers tracked by CaratRadar.
1.5 Carat Round Natural Diamond Market Overview
CaratRadar currently tracks 9,790 verified 1.5-carat round natural diamonds listed across 11 online retailers. Prices in this segment range from $625 to $25,895, with an average asking price of $8,538 and a median of $7,848.
The price spread of $25,270 (97.6% 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.
9,790 diamonds tracked in this segment
Price range: $625 to $25,895
Average price: $8,538
Median price: $7,848
Available across 11 retailers
Savings potential: up to 97.6%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
9,790
$625
$8,538
$7,848
$25,895
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 23.1%IGI | 1.5ct | Round | K | SI1 | Very Good
From $1,685
Compare at $2,190
Save 23.4%IGI | 1.51ct | Round | K | SI1 | Excellent
From $1,760
Compare at $2,298
Save 21.5%IGI | 1.5ct | Round | K | SI1 | Very Good
From $1,820
Compare at $2,320
Save 21.7%IGI | 1.5ct | Round | K | SI1 | Very Good
From $1,855
Compare at $2,370
Save 23.1%IGI | 1.5ct | Round | K | SI1 | Ideal
From $1,895
Compare at $2,465
Save 21.7%IGI | 1.5ct | Round | K | SI1 | Ideal
From $1,895
Compare at $2,420
Save 21.6%IGI | 1.51ct | Round | K | SI1 | Excellent
From $1,910
Compare at $2,436
Save 23.3%GIA | 1.5ct | Round | L | SI2 | Ideal
From $1,921
Compare at $2,504
Save 21.6%IGI | 1.53ct | Round | K | SI1 | Very Good
From $1,935
Compare at $2,468
Save 35.2%GIA | 1.5ct | Round | L | SI1 | Good
From $1,938
Compare at $2,992
Save 26.2%GIA | 1.5ct | Round | L | SI2 | Excellent
From $1,983
Compare at $2,687
Save 14.9%IGI | 1.5ct | Round | J | SI1 | Very Good
From $2,005
Compare at $2,357
Save 21.6%IGI | 1.5ct | Round | J | SI1 | Very Good
From $2,040
Compare at $2,603
Save 13.8%GIA | 1.5ct | Round | K | SI1 | Good
From $2,045
Compare at $2,372
Save 32.2%GIA | 1.5ct | Round | L | SI2 | Excellent
From $2,062
Compare at $3,042
Save 21.7%IGI | 1.51ct | Round | K | SI1 | Very Good
From $2,065
Compare at $2,637
Save 21.6%IGI | 1.52ct | Round | K | SI1 | Excellent
From $2,080
Compare at $2,654
Save 21.8%IGI | 1.5ct | Round | K | VS2 | Very Good
From $2,090
Compare at $2,672
Save 26.2%GIA | 1.59ct | Round | L | SI2 | Ideal
From $2,102
Compare at $2,847
Save 20.2%IGI | 1.51ct | Round | K | SI1 | Excellent
From $2,105
Compare at $2,637
Save 20.4%IGI | 1.5ct | Round | J | SI1 | Very Good
From $2,110
Compare at $2,650
Save 28.7%GIA | 1.51ct | Round | L | SI2 | Excellent
From $2,111
Compare at $2,961
Save 26.2%GIA | 1.51ct | Round | L | SI2 | Ideal
From $2,113
Compare at $2,862
Save 18.8%IGI | 1.5ct | Round | K | SI1 | Very Good
From $2,120
Compare at $2,611
Save 33.1%GIA | 1.5ct | Round | L | SI2 | Very Good
From $2,124
Compare at $3,176
Save 20.2%IGI | 1.51ct | Round | K | SI1 | Excellent
From $2,185
Compare at $2,737
Save 26.2%GIA | 1.52ct | Round | L | SI2 | Excellent
From $2,186
Compare at $2,960
Save 18.9%IGI | 1.5ct | Round | K | SI1 | Ideal
From $2,195
Compare at $2,707
Save 18.9%IGI | 1.5ct | Round | K | SI1 | Ideal
From $2,195
Compare at $2,707
Save 18.9%IGI | 1.5ct | Round | K | SI1 | Very Good
From $2,195
Compare at $2,707
Save 32.8%GIA | 1.5ct | Round | L | SI2 | Excellent
From $2,200
Compare at $3,274
Save 20.1%IGI | 1.5ct | Round | K | SI1 | Excellent
From $2,205
Compare at $2,761
Save 29.6%GIA | 1.5ct | Round | K | SI2 | Excellent
From $2,218
Compare at $3,150
Save 30.5%GIA | 1.5ct | Round | K | SI1 | Good
From $2,230
Compare at $3,209
Save 15.5%GIA | 1.5ct | Round | L | SI2 | Excellent
From $2,250
Compare at $2,664
Save 20.1%IGI | 1.5ct | Round | K | VS2 | Excellent
From $2,255
Compare at $2,823
Save 33.1%GIA | 1.5ct | Round | L | SI1 | Excellent
From $2,261
Compare at $3,379
Save 17.2%IGI | 1.51ct | Round | K | VS2 | Ideal
From $2,270
Compare at $2,740
Save 16%IGI | 1.5ct | Round | K | SI1 | Very Good
From $2,285
Compare at $2,719
Save 13.1%IGI | 1.51ct | Round | K | SI1 | Excellent
From $2,290
Compare at $2,637
Save 26.1%GIA | 1.52ct | Round | L | SI2 | Ideal
From $2,304
Compare at $3,119
Save 20.7%IGI | 1.5ct | Round | K | SI1 | Ideal
From $2,305
Compare at $2,907
Save 32.2%GIA | 1.51ct | Round | L | SI2 | Excellent
From $2,314
Compare at $3,414
Save 33.9%GIA | 1.5ct | Round | L | SI2 | Ideal
From $2,318
Compare at $3,505
Save 20.8%IGI | 1.5ct | Round | K | VS2 | Excellent
From $2,320
Compare at $2,928
Save 42.3%GIA | 1.5ct | Round | K | SI2 | Very Good
From $2,323
Compare at $4,023
Save 26.9%GIA | 1.5ct | Round | K | SI2 | Very Good
From $2,323
Compare at $3,176
Save 23.7%GIA | 1.51ct | Round | L | SI2 | Excellent
From $2,325
Compare at $3,049
Save 17.3%IGI | 1.6ct | Round | J | SI1 | Excellent
From $2,325
Compare at $2,811
Save 14.9%IGI | 1.51ct | Round | K | SI1 | Excellent
From $2,330
Compare at $2,737
Entry pricing in this category starts around $625.
What to Know When Shopping for 1.5 Carat Round Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $25,270 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 $7,848 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 9,790 comparable stones in this segment. Prices start around $625 and go up to $25,895.
Based on the latest market data, the average asking price is about $8,538 with a median around $7,848.
The observed spread is roughly $25,270 across tracked listings, which is about 97.6% 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 $8,538. The median price is $7,848, 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 11 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 $25,270 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 1.5 carat Round diamonds.