0.5 Carat Radiant Natural Diamond Prices Comparison
As of May 2026, 0.5 carat radiant natural diamonds usually range from $238 to $3,069, with an average price of $953.In the last month, prices for these diamonds are down 2.5%.Compare 1,509 verified listings across 8 retailers tracked by CaratRadar.
0.5 Carat Radiant Natural Diamond Market Overview
CaratRadar currently tracks 1,509 verified 0.5-carat radiant natural diamonds listed across 8 online retailers. Prices in this segment range from $238 to $3,069, with an average asking price of $953 and a median of $899.
The price spread of $2,831 (92.2% 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.
1,509 diamonds tracked in this segment
Price range: $238 to $3,069
Average price: $953
Median price: $899
Available across 8 retailers
Savings potential: up to 92.2%
Price Range Overview
As of May 31, 2026Real market range for this carat, shape, and diamond type.
1,509
$238
$953
$899
$3,069
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 37.5%GIA | 0.51ct | Radiant | L | SI1 | Excellent
From $238
Compare at $381
Save 23.8%GIA | 0.51ct | Radiant | H | SI2 | Excellent
From $343
Compare at $450
Save 27.8%GIA | 0.52ct | Radiant | J | SI1 | Very Good
From $380
Compare at $526
IGI | 0.51ct | Radiant | K | SI1 | Very Good
From $394
Compare at $398
Save 29.9%GIA | 0.51ct | Radiant | L | VVS1 | Excellent
From $405
Compare at $578
Save 30.2%GIA | 0.54ct | Radiant | J | VS2 | Ideal
From $420
Compare at $602
Save 32.3%GIA | 0.5ct | Radiant | I | VS2 | Excellent
From $440
Compare at $650
Save 33.3%GIA | 0.5ct | Radiant | I | VS2 | Excellent
From $447
Compare at $670
Save 34.1%GIA | 0.5ct | Radiant | I | VS2 | Very Good
From $448
Compare at $680
Save 28.9%GIA | 0.51ct | Radiant | J | SI1 | Very Good
From $456
Compare at $642
GIA | 0.5ct | Radiant | K | SI1 | Very Good
From $460
Compare at $502
Save 32.6%GIA | 0.51ct | Radiant | G | SI1 | Very Good
From $460
Compare at $682
Save 29.2%GIA | 0.5ct | Radiant | I | VS1 | Very Good
From $462
Compare at $653
Save 18%GIA | 0.5ct | Radiant | J | VS2 | Excellent
From $462
Compare at $564
Save 30.1%GIA | 0.53ct | Radiant | I | VS2 | Excellent
From $465
Compare at $665
GIA | 0.51ct | Radiant | K | SI2 | Excellent
From $467
Compare at $499
GIA | 0.5ct | Radiant | J | SI1 | Good
From $470
Compare at $519
Save 31.1%GIA | 0.53ct | Radiant | J | VS1 | Ideal
From $470
Compare at $682
IGI | 0.5ct | Radiant | J | VS1 | Very Good
From $470
Compare at $491
GIA | 0.5ct | Radiant | K | VS1 | Excellent
From $471
Compare at $485
GIA | 0.53ct | Radiant | L | SI1 | Excellent
From $472
Compare at $509
IGI | 0.5ct | Radiant | K | SI1 | Very Good
From $474
Compare at $475
Save 26.5%GIA | 0.52ct | Radiant | K | SI1 | Very Good
From $475
Compare at $646
GIA | 0.51ct | Radiant | L | SI1 | Excellent
From $475
Compare at $512
Save 33%GIA | 0.5ct | Radiant | I | VS2 | Very Good
From $476
Compare at $710
Save 27.7%GIA | 0.5ct | Radiant | I | SI1 | Ideal
From $480
Compare at $664
Save 30.9%GIA | 0.51ct | Radiant | G | SI1 | Excellent
From $480
Compare at $695
Save 10.9%GIA | 0.5ct | Radiant | L | VS1 | Good
From $484
Compare at $543
Save 13.4%IGI | 0.51ct | Radiant | I | VS2 | Very Good
From $485
Compare at $560
Save 32.8%GIA | 0.5ct | Radiant | H | VS2 | Excellent
From $487
Compare at $725
Save 33.3%GIA | 0.5ct | Radiant | H | VS2 | Excellent
From $487
Compare at $730
Save 32.1%GIA | 0.51ct | Radiant | J | VVS1 | Excellent
From $489
Compare at $720
Save 12.9%GIA | 0.5ct | Radiant | J | SI1 | Very Good
From $490
Compare at $562
Save 19%GIA | 0.51ct | Radiant | H | VS2 | Very Good
From $490
Compare at $605
Save 29.9%GIA | 0.5ct | Radiant | G | SI1 | Very Good
From $490
Compare at $699
Save 30%GIA | 0.5ct | Radiant | I | VVS2 | Excellent
From $493
Compare at $705
Save 31.9%GIA | 0.5ct | Radiant | J | VS1 | Very Good
From $494
Compare at $725
GIA | 0.51ct | Radiant | K | VVS1 | Excellent
From $494
Compare at $505
Save 19.5%GIA | 0.5ct | Radiant | I | VS2 | Very Good
From $495
Compare at $615
GIA | 0.51ct | Radiant | F | SI1 | Very Good
From $497
Compare at $517
Save 32.4%GIA | 0.51ct | Radiant | I | VS2 | Ideal
From $500
Compare at $740
Save 30%GIA | 0.51ct | Radiant | G | SI1 | Ideal
From $500
Compare at $715
GIA | 0.5ct | Radiant | K | VVS2 | Excellent
From $504
Compare at $520
GIA | 0.5ct | Radiant | K | VS2 | Very Good
From $505
Compare at $506
Save 19.2%GIA | 0.5ct | Radiant | I | VS1 | Excellent
From $506
Compare at $626
Save 28.8%GIA | 0.5ct | Radiant | I | VVS1 | Very Good
From $507
Compare at $712
Save 24.9%GIA | 0.53ct | Radiant | J | VVS1 | Excellent
From $507
Compare at $675
Save 26.2%GIA | 0.5ct | Radiant | H | VS2 | Excellent
From $507
Compare at $687
Save 29.8%GIA | 0.5ct | Radiant | F | SI1 | Excellent
From $510
Compare at $727
Save 19.2%GIA | 0.5ct | Radiant | H | SI1 | Very Good
From $510
Compare at $631
Entry pricing in this category starts around $238.
What to Know When Shopping for 0.5 Carat Radiant Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $2,831 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 $899 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 1,509 comparable stones in this segment. Prices start around $238 and go up to $3,069.
Based on the latest market data, the average asking price is about $953 with a median around $899.
The observed spread is roughly $2,831 across tracked listings, which is about 92.2% 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 $953. The median price is $899, 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 8 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 $2,831 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 0.5 carat Radiant diamonds.