1.5 Carat Radiant Natural Diamond Prices Comparison
As of May 2026, 1.5 carat radiant natural diamonds usually range from $794 to $18,911, with an average price of $7,737.In the last month, prices for these diamonds are up 0.2%.Compare 1,553 verified listings across 10 retailers tracked by CaratRadar.
1.5 Carat Radiant Natural Diamond Market Overview
CaratRadar currently tracks 1,553 verified 1.5-carat radiant natural diamonds listed across 10 online retailers. Prices in this segment range from $794 to $18,911, with an average asking price of $7,737 and a median of $7,410.
The price spread of $18,117 (95.8% 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 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.
1,553 diamonds tracked in this segment
Price range: $794 to $18,911
Average price: $7,737
Median price: $7,410
Available across 10 retailers
Savings potential: up to 95.8%
Price Range Overview
As of May 30, 2026Real market range for this carat, shape, and diamond type.
1,553
$794
$7,737
$7,410
$18,911
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 33.8%GIA | 1.51ct | Radiant | L | VS2 | Excellent
From $1,890
Compare at $2,856
Save 20.4%IGI | 1.5ct | Radiant | K | VS1 | Very Good
From $1,890
Compare at $2,374
Save 23%GIA | 1.5ct | Radiant | K | SI2 | Excellent
From $1,997
Compare at $2,592
GIA | 1.5ct | Radiant | K | SI2 | Ideal
From $2,146
Compare at $2,263
Save 33.1%GIA | 1.51ct | Radiant | L | SI1 | Excellent
From $2,207
Compare at $3,299
Save 20.1%IGI | 1.55ct | Radiant | K | VS2 | Very Good
From $2,315
Compare at $2,896
Save 14.8%GIA | 1.5ct | Radiant | L | SI1 | Excellent
From $2,317
Compare at $2,721
Save 20.7%IGI | 1.52ct | Radiant | K | VS1 | Ideal
From $2,320
Compare at $2,927
Save 40.9%GIA | 1.51ct | Radiant | K | VVS1 | Excellent
From $2,335
Compare at $3,954
Save 30%GIA | 1.52ct | Radiant | L | SI2 | Excellent
From $2,347
Compare at $3,352
Save 33.8%GIA | 1.51ct | Radiant | K | SI2 | Excellent
From $2,360
Compare at $3,567
Save 38.5%GIA | 1.51ct | Radiant | L | VS2 | Excellent
From $2,403
Compare at $3,909
Save 38.5%GIA | 1.57ct | Radiant | L | VVS2 | Good
From $2,434
Compare at $3,960
Save 30.7%GIA | 1.5ct | Radiant | L | SI1 | Excellent
From $2,459
Compare at $3,546
Save 30.7%GIA | 1.51ct | Radiant | K | SI1 | Excellent
From $2,462
Compare at $3,551
Save 20.3%GIA | 1.5ct | Radiant | L | VS2 | Excellent
From $2,474
Compare at $3,105
Save 30%GIA | 1.58ct | Radiant | L | SI2 | Very Good
From $2,490
Compare at $3,557
Save 33%GIA | 1.5ct | Radiant | L | SI1 | Excellent
From $2,506
Compare at $3,742
Save 20.3%GIA | 1.51ct | Radiant | K | SI2 | Excellent
From $2,506
Compare at $3,145
Save 23.1%GIA | 1.51ct | Radiant | L | SI1 | Very Good
From $2,522
Compare at $3,279
GIA | 1.5ct | Radiant | K | SI2 | Excellent
From $2,524
Compare at $2,554
Save 25.9%GIA | 1.5ct | Radiant | K | VS1 | Excellent
From $2,525
Compare at $3,408
Save 30%GIA | 1.5ct | Radiant | J | SI1 | Very Good
From $2,527
Compare at $3,610
Save 20.8%IGI | 1.5ct | Radiant | J | VS1 | Very Good
From $2,530
Compare at $3,194
GIA | 1.5ct | Radiant | L | VS2 | Excellent
From $2,535
Compare at $2,721
Save 38.5%GIA | 1.51ct | Radiant | L | VS1 | Excellent
From $2,544
Compare at $4,138
Save 40.2%GIA | 1.51ct | Radiant | K | SI2 | Excellent
From $2,548
Compare at $4,262
Save 23.5%GIA | 1.56ct | Radiant | K | SI1 | Excellent
From $2,568
Compare at $3,355
Save 20.3%GIA | 1.5ct | Radiant | L | SI1 | Very Good
From $2,570
Compare at $3,225
Save 16.1%GIA | 1.5ct | Radiant | L | SI2 | Very Good
From $2,579
Compare at $3,075
Save 20%IGI | 1.51ct | Radiant | I | SI1 | Very Good
From $2,580
Compare at $3,225
HRD | 1.5ct | Radiant | J | SI1 | Very Good
From $2,600
Compare at $2,654
Save 29.2%GIA | 1.51ct | Radiant | L | VVS2 | Excellent
From $2,615
Compare at $3,692
Save 38.5%GIA | 1.51ct | Radiant | L | VVS2 | Very Good
From $2,615
Compare at $4,252
Save 39.8%GIA | 1.5ct | Radiant | J | SI2 | Excellent
From $2,625
Compare at $4,362
Save 21.8%GIA | 1.5ct | Radiant | J | SI2 | Excellent
From $2,630
Compare at $3,362
Save 21.9%GIA | 1.51ct | Radiant | K | SI2 | Excellent
From $2,635
Compare at $3,375
Save 19.3%GIA | 1.5ct | Radiant | K | SI1 | Excellent
From $2,635
Compare at $3,266
Save 21.9%GIA | 1.5ct | Radiant | L | SI2 | Excellent
From $2,643
Compare at $3,385
Save 40.2%GIA | 1.5ct | Radiant | J | SI1 | Very Good
From $2,665
Compare at $4,457
Save 21.9%GIA | 1.5ct | Radiant | K | VS2 | Excellent
From $2,666
Compare at $3,415
Save 20.3%GIA | 1.51ct | Radiant | L | VS2 | Excellent
From $2,674
Compare at $3,354
Save 39.8%GIA | 1.51ct | Radiant | K | SI2 | Excellent
From $2,680
Compare at $4,452
Save 29.9%GIA | 1.51ct | Radiant | K | SI2 | Excellent
From $2,683
Compare at $3,826
Save 20.3%GIA | 1.5ct | Radiant | L | SI1 | Very Good
From $2,689
Compare at $3,374
Save 29.9%GIA | 1.5ct | Radiant | L | SI1 | Excellent
From $2,697
Compare at $3,847
Save 21.9%GIA | 1.5ct | Radiant | K | SI1 | Excellent
From $2,707
Compare at $3,468
Save 40.2%GIA | 1.5ct | Radiant | K | SI2 | Excellent
From $2,710
Compare at $4,532
Save 33.9%GIA | 1.51ct | Radiant | K | SI2 | Very Good
From $2,712
Compare at $4,100
Save 30.3%GIA | 1.51ct | Radiant | J | SI2 | Excellent
From $2,722
Compare at $3,905
Entry pricing in this category starts around $794.
What to Know When Shopping for 1.5 Carat Radiant Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $18,117 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 $7,410 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.
- Radiant cuts combine the elegance of emerald shapes with the brilliance of round cuts, offering good value per carat.
Frequently Asked Questions
We currently track 1,553 comparable stones in this segment. Prices start around $794 and go up to $18,911.
Based on the latest market data, the average asking price is about $7,737 with a median around $7,410.
The observed spread is roughly $18,117 across tracked listings, which is about 95.8% 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 $7,737. The median price is $7,410, 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 $18,117 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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