0.3 Carat Radiant Natural Diamond Prices Comparison
As of April 2026, 0.3 carat radiant natural diamonds usually range from $226 to $10,937, with an average price of $641.In the last month, prices for these diamonds are down 0.3%.Compare 329 verified listings across 6 retailers tracked by CaratRadar.
0.3 Carat Radiant Natural Diamond Market Overview
CaratRadar currently tracks 329 verified 0.3-carat radiant natural diamonds listed across 6 online retailers. Prices in this segment range from $226 to $10,937, with an average asking price of $641 and a median of $459.
The price spread of $10,711 (97.9% 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.
329 diamonds tracked in this segment
Price range: $226 to $10,937
Average price: $641
Median price: $459
Available across 6 retailers
Savings potential: up to 97.9%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
329
$226
$641
$459
$10,937
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 15.6%GIA | 0.3ct | Radiant | E | VS2 | Very Good
From $563
Compare at $667
GIA | 0.3ct | Radiant | G | SI2 | Excellent
From $407
Compare at $445
GIA | 0.3ct | Radiant | E | SI1 | Excellent
From $394
Compare at $416
GIA | 0.3ct | Radiant | I | VVS2 | Excellent
From $399
Compare at $422
GIA | 0.3ct | Radiant | G | VVS1 | Ideal
From $459
Compare at $491
Save 10.7%GIA | 0.3ct | Radiant | F | FL | Excellent
From $549
Compare at $615
Save 12.8%GIA | 0.3ct | Radiant | H | VVS1 | Ideal
From $449
Compare at $515
GIA | 0.3ct | Radiant | I | VS1 | Ideal
From $390
Compare at $403
GIA | 0.3ct | Radiant | F | VVS1 | Excellent
From $702
Compare at $773
Save 16.4%GIA | 0.3ct | Radiant | E | SI1 | Excellent
From $435
Compare at $520
GIA | 0.3ct | Radiant | G | VVS1 | Excellent
From $447
Compare at $481
GIA | 0.3ct | Radiant | G | VS2 | Excellent
From $440
Compare at $470
GIA | 0.3ct | Radiant | H | IF | Ideal
From $405
Compare at $430
Save 23.2%GIA | 0.3ct | Radiant | H | SI1 | Ideal
From $340
Compare at $443
GIA | 0.3ct | Radiant | F | VVS2 | Excellent
From $468
Compare at $506
Save 13.4%GIA | 0.3ct | Radiant | D | VVS1 | Excellent
From $607
Compare at $701
GIA | 0.3ct | Radiant | H | VS1 | Excellent
From $419
Compare at $437
Save 26.6%GIA | 0.3ct | Radiant | I | VS1 | Ideal
From $370
Compare at $504
Save 14.3%GIA | 0.3ct | Radiant | I | VVS1 | Very Good
From $394
Compare at $460
GIA | 0.3ct | Radiant | E | VS2 | Excellent
From $455
Compare at $484
Save 10.6%GIA | 0.3ct | Radiant | G | VVS1 | Excellent
From $482
Compare at $539
Save 12.5%GIA | 0.3ct | Radiant | H | IF | Excellent
From $456
Compare at $521
Save 10.2%GIA | 0.3ct | Radiant | D | IF | Excellent
From $528
Compare at $588
GIA | 0.3ct | Radiant | D | SI1 | Excellent
From $410
Compare at $436
GIA | 0.3ct | Radiant | D | SI1 | Excellent
From $443
Compare at $464
Save 12.6%GIA | 0.3ct | Radiant | D | SI1 | Excellent
From $461
Compare at $527
Save 22.2%GIA | 0.3ct | Radiant | H | VS2 | Excellent
From $400
Compare at $514
GIA | 0.3ct | Radiant | D | SI2 | Excellent
From $426
Compare at $453
GIA | 0.3ct | Radiant | F | SI1 | Ideal
From $408
Compare at $432
Save 11.1%GIA | 0.3ct | Radiant | E | IF | Ideal
From $574
Compare at $646
GIA | 0.3ct | Radiant | G | VVS2 | Ideal
From $437
Compare at $468
GIA | 0.3ct | Radiant | G | VS2 | Excellent
From $446
Compare at $473
GIA | 0.3ct | Radiant | H | SI1 | Ideal
From $396
Compare at $417
GIA | 0.3ct | Radiant | G | SI1 | Excellent
From $393
Compare at $413
Save 15.9%GIA | 0.3ct | Radiant | F | SI1 | Ideal
From $429
Compare at $510
GIA | 0.3ct | Radiant | I | VS2 | Excellent
From $396
Compare at $414
GIA | 0.3ct | Radiant | F | VVS1 | Excellent
From $484
Compare at $537
GIA | 0.3ct | Radiant | E | IF | Excellent
From $681
Compare at $682
GIA | 0.3ct | Radiant | G | VVS1 | Excellent
From $494
Compare at $545
GIA | 0.3ct | Radiant | F | SI1 | Ideal
From $408
Compare at $434
Save 11.1%GIA | 0.3ct | Radiant | G | IF | Excellent
From $471
Compare at $530
GIA | 0.3ct | Radiant | G | VVS2 | Excellent
From $517
Compare at $528
GIA | 0.3ct | Radiant | E | VVS2 | Excellent
From $524
Compare at $537
GIA | 0.3ct | Radiant | F | VVS1 | Ideal
From $532
Compare at $580
GIA | 0.3ct | Radiant | E | SI1 | Excellent
From $410
Compare at $429
Save 13.7%GIA | 0.3ct | Radiant | G | IF | Ideal
From $450
Compare at $522
Save 24.4%GIA | 0.3ct | Radiant | H | SI1 | Ideal
From $350
Compare at $463
GIA | 0.3ct | Radiant | G | VVS2 | Excellent
From $423
Compare at $451
GIA | 0.3ct | Radiant | G | VVS1 | Excellent
From $527
Compare at $539
Save 12.2%GIA | 0.3ct | Radiant | H | VVS2 | Excellent
From $443
Compare at $504
Entry pricing in this category starts around $226.
What to Know When Shopping for 0.3 Carat Radiant Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $10,711 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 $459 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 329 comparable stones in this segment. Prices start around $226 and go up to $10,937.
Based on the latest market data, the average asking price is about $641 with a median around $459.
The observed spread is roughly $10,711 across tracked listings, which is about 97.9% from highest to lowest offer in this bucket.
We refresh pricing data daily so these pages stay current with market changes.
Based on our data, the median price is $459, which represents the midpoint of the market. Anything below this figure from a reputable retailer is a solid deal.
We currently track this stone category across 6 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 $10,711 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 0.3 carat Radiant diamonds.