1.3 Carat Radiant Natural Diamond Prices Comparison
As of May 2026, 1.3 carat radiant natural diamonds usually range from $820 to $17,684, with an average price of $5,671.In the last month, prices for these diamonds are down 0.6%.Compare 87 verified listings across 9 retailers tracked by CaratRadar.
1.3 Carat Radiant Natural Diamond Market Overview
CaratRadar currently tracks 87 verified 1.3-carat radiant natural diamonds listed across 9 online retailers. Prices in this segment range from $820 to $17,684, with an average asking price of $5,671 and a median of $5,440.
The price spread of $16,864 (95.4% 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.
87 diamonds tracked in this segment
Price range: $820 to $17,684
Average price: $5,671
Median price: $5,440
Available across 9 retailers
Savings potential: up to 95.4%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
87
$820
$5,671
$5,440
$17,684
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 39.2%GIA | 1.31ct | Radiant | J | SI1 | Excellent
From $2,220
Compare at $3,649
Save 26.7%GIA | 1.34ct | Radiant | K | SI2 | Excellent
From $2,418
Compare at $3,301
Save 23.1%GIA | 1.31ct | Radiant | L | VS1 | Excellent
From $2,556
Compare at $3,322
GIA | 1.32ct | Radiant | K | SI1 | Excellent
From $2,685
Compare at $2,941
Save 33%GIA | 1.33ct | Radiant | J | SI1 | Excellent
From $2,687
Compare at $4,010
Save 39.5%IGI | 1.31ct | Radiant | J | VS2 | Very Good
From $2,698
Compare at $4,457
Save 38.5%GIA | 1.34ct | Radiant | K | VS1 | Excellent
From $2,767
Compare at $4,498
Save 21.9%GIA | 1.31ct | Radiant | E | SI2 | Excellent
From $2,804
Compare at $3,591
Save 29.9%GIA | 1.32ct | Radiant | K | VS1 | Excellent
From $2,897
Compare at $4,135
Save 32.8%GIA | 1.31ct | Radiant | I | SI2 | Ideal
From $2,998
Compare at $4,461
Save 18.4%GIA | 1.33ct | Radiant | G | SI2 | Very Good
From $3,175
Compare at $3,893
Save 39.7%GIA | 1.32ct | Radiant | J | VS2 | Excellent
From $3,212
Compare at $5,329
Save 29.9%IGI | 1.35ct | Radiant | I | VS2 | Very Good
From $3,214
Compare at $4,583
Save 39.7%GIA | 1.31ct | Radiant | H | SI2 | Ideal
From $3,231
Compare at $5,359
Save 36.7%GIA | 1.31ct | Radiant | K | VVS2 | Excellent
From $3,272
Compare at $5,170
GIA | 1.33ct | Radiant | I | VS1 | Ideal
From $3,397
Compare at $3,700
Save 22.1%GIA | 1.31ct | Radiant | L | VVS2 | Excellent
From $3,399
Compare at $4,366
Save 28.5%GIA | 1.37ct | Radiant | K | VVS1 | Excellent
From $3,437
Compare at $4,808
Save 18.4%GIA | 1.32ct | Radiant | G | SI1 | Very Good
From $3,437
Compare at $4,213
Save 22.1%GIA | 1.32ct | Radiant | G | SI2 | Excellent
From $3,440
Compare at $4,418
Save 36.4%GIA | 1.32ct | Radiant | G | SI1 | Good
From $3,485
Compare at $5,481
Save 26.8%GIA | 1.31ct | Radiant | E | SI2 | Excellent
From $3,486
Compare at $4,761
Save 18.8%GIA | 1.34ct | Radiant | I | VVS2 | Excellent
From $3,514
Compare at $4,327
Save 28.8%GIA | 1.32ct | Radiant | I | VS1 | Excellent
From $3,514
Compare at $4,938
Save 37.2%GIA | 1.35ct | Radiant | J | VVS2 | Excellent
From $3,553
Compare at $5,656
HRD | 1.33ct | Radiant | E | SI1 | Ideal
From $3,620
Compare at $3,679
Save 37.7%GIA | 1.31ct | Radiant | J | VS1 | Excellent
From $3,651
Compare at $5,862
Save 12.8%IGI | 1.31ct | Radiant | I | VVS2 | Very Good
From $3,685
Compare at $4,225
Save 37.7%GIA | 1.31ct | Radiant | I | VVS2 | Excellent
From $3,726
Compare at $5,981
Save 28.9%GIA | 1.31ct | Radiant | D | SI2 | Excellent
From $3,795
Compare at $5,334
Save 25.3%IGI | 1.32ct | Radiant | I | VVS2 | Very Good
From $3,840
Compare at $5,138
Save 22.1%GIA | 1.31ct | Radiant | K | VS1 | Excellent
From $3,863
Compare at $4,961
Save 22.1%GIA | 1.33ct | Radiant | L | IF | Excellent
From $3,865
Compare at $4,964
Save 35.2%GIA | 1.32ct | Radiant | H | SI1 | Excellent
From $3,942
Compare at $6,088
Save 22.1%GIA | 1.31ct | Radiant | E | SI2 | Ideal
From $3,969
Compare at $5,097
Save 23.3%GIA | 1.31ct | Radiant | H | SI1 | Excellent
From $4,010
Compare at $5,230
Save 22.1%GIA | 1.31ct | Radiant | D | SI2 | Excellent
From $4,068
Compare at $5,224
Save 21.4%GIA | 1.31ct | Radiant | J | VS2 | Excellent
From $4,099
Compare at $5,213
Save 29.3%GIA | 1.31ct | Radiant | D | SI1 | Excellent
From $4,100
Compare at $5,802
Save 25.8%GIA | 1.33ct | Radiant | K | VS1 | Excellent
From $4,112
Compare at $5,545
Save 23.6%GIA | 1.31ct | Radiant | E | SI2 | Excellent
From $4,134
Compare at $5,409
Save 23.6%GIA | 1.31ct | Radiant | E | SI2 | Excellent
From $4,135
Compare at $5,410
Save 36.3%GIA | 1.31ct | Radiant | D | SI2 | Excellent
From $4,159
Compare at $6,525
GIA | 1.38ct | Radiant | J | VVS1 | Excellent
From $4,171
Compare at $4,412
Save 25.2%GIA | 1.32ct | Radiant | F | SI1 | Excellent
From $4,317
Compare at $5,768
Save 22.3%GIA | 1.32ct | Radiant | F | SI2 | Excellent
From $4,456
Compare at $5,734
Save 27.6%GIA | 1.35ct | Radiant | I | VS1 | Excellent
From $4,498
Compare at $6,210
Save 37.7%GIA | 1.34ct | Radiant | E | SI2 | Excellent
From $4,530
Compare at $7,273
Save 33.1%GIA | 1.31ct | Radiant | G | SI1 | Very Good
From $4,539
Compare at $6,788
Save 33.4%GIA | 1.32ct | Radiant | E | SI1 | Excellent
From $4,573
Compare at $6,863
Entry pricing in this category starts around $820.
What to Know When Shopping for 1.3 Carat Radiant Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $16,864 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 $5,440 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 87 comparable stones in this segment. Prices start around $820 and go up to $17,684.
Based on the latest market data, the average asking price is about $5,671 with a median around $5,440.
The observed spread is roughly $16,864 across tracked listings, which is about 95.4% 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 $5,671. The median price is $5,440, 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 $16,864 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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