0.3 Carat Radiant Natural Diamond Prices Comparison
As of February 2026, 0.3 carat radiant natural diamonds usually range from $310 to $728, with an average price of $523.In the last month, prices for these diamonds are down 3.9%.Compare 124 verified listings across 3 retailers tracked by CaratRadar.
0.3 Carat Radiant Natural Diamond Market Overview
CaratRadar currently tracks 124 verified 0.3-carat radiant natural diamonds listed across 3 online retailers. Prices in this segment range from $310 to $728, with an average asking price of $523 and a median of $521.
The price spread of $418 (57.4% 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.
124 diamonds tracked in this segment
Price range: $310 to $728
Average price: $523
Median price: $521
Available across 3 retailers
Savings potential: up to 57.4%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
124
$310
$523
$521
$728
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
GIASave 21.8%0.29ct | Radiant | F | VS2 | Excellent
From $485
Compare at $620
GIA0.3ct | Radiant | F | VVS1 | Excellent
From $562
Compare at $580
GIA0.3ct | Radiant | D | VVS1 | Excellent
From $697
Compare at $732
GIA0.3ct | Radiant | G | VVS2 | Excellent
From $520
Compare at $537
GIA0.3ct | Radiant | F | VS1 | Excellent
From $519
Compare at $530
GIA0.3ct | Radiant | G | VVS1 | Excellent
From $528
Compare at $539
GIASave 16%0.3ct | Radiant | I | VS1 | Ideal
From $470
Compare at $560
GIASave 21.7%0.3ct | Radiant | H | VS2 | Excellent
From $430
Compare at $549
GIA0.3ct | Radiant | G | IF | Ideal
From $522
Compare at $532
0.3ct | Radiant | H | SI1 | Excellent
From $490
Compare at $608
GIA0.3ct | Radiant | F | VVS1 | Excellent
From $545
Compare at $557
GIASave 24.7%0.3ct | Radiant | F | VS1 | Very Good
From $429
Compare at $570
GIA0.3ct | Radiant | D | VVS1 | Excellent
From $638
Compare at $653
GIA0.3ct | Radiant | I | VVS2 | Excellent
From $444
Compare at $490
GIA0.3ct | Radiant | H | VVS1 | Excellent
From $510
Compare at $526
GIA0.3ct | Radiant | G | VVS2 | Excellent
From $489
Compare at $505
GIA0.3ct | Radiant | E | VVS2 | Excellent
From $534
Compare at $545
GIASave 18.9%0.3ct | Radiant | H | SI1 | Ideal
From $438
Compare at $540
GIA0.3ct | Radiant | F | VVS1 | Excellent
From $397
Compare at $400
GIASave 17.3%0.3ct | Radiant | I | SI2 | Ideal
From $310
Compare at $375
GIA0.3ct | Radiant | E | VVS1 | Excellent
From $538
Compare at $557
GIA0.3ct | Radiant | E | IF | Excellent
From $672
Compare at $688
GIASave 16.4%0.3ct | Radiant | E | SI1 | Excellent
From $468
Compare at $560
GIA0.3ct | Radiant | E | VVS1 | Excellent
From $551
Compare at $564
GIASave 24.4%0.3ct | Radiant | H | SI1 | Excellent
From $400
Compare at $529
GIA0.3ct | Radiant | G | VVS1 | Excellent
From $534
Compare at $560
GIA0.3ct | Radiant | F | VVS2 | Excellent
From $528
Compare at $539
GIA0.3ct | Radiant | E | VVS1 | Excellent
From $576
Compare at $597
GIA0.3ct | Radiant | D | IF | Excellent
From $713
Compare at $749
GIASave 16.7%0.3ct | Radiant | F | SI1 | Ideal
From $458
Compare at $550
GIA0.3ct | Radiant | H | VVS1 | Excellent
From $466
Compare at $478
GIA0.3ct | Radiant | E | VVS1 | Excellent
From $538
Compare at $557
GIA0.3ct | Radiant | G | VVS1 | Excellent
From $528
Compare at $539
GIA0.3ct | Radiant | E | VVS1 | Excellent
From $576
Compare at $597
GIA0.3ct | Radiant | F | VVS2 | Excellent
From $376
Compare at $385
GIA0.3ct | Radiant | D | IF | Excellent
From $632
Compare at $655
GIA0.3ct | Radiant | F | VVS1 | Excellent
From $545
Compare at $564
GIASave 18.6%0.3ct | Radiant | E | SI1 | Excellent
From $448
Compare at $550
GIA0.3ct | Radiant | D | VVS2 | Excellent
From $614
Compare at $628
GIASave 17.3%0.3ct | Radiant | D | SI1 | Excellent
From $488
Compare at $590
GIASave 20.9%0.3ct | Radiant | H | SI1 | Ideal
From $419
Compare at $530
GIA0.3ct | Radiant | I | VVS1 | Very Good
From $499
Compare at $530
GIA0.3ct | Radiant | G | VVS1 | Excellent
From $505
Compare at $523
GIA0.3ct | Radiant | E | IF | Excellent
From $624
Compare at $645
GIA0.3ct | Radiant | G | VVS2 | Excellent
From $519
Compare at $541
GIA0.3ct | Radiant | E | VVS1 | Excellent
From $595
Compare at $609
GIA0.3ct | Radiant | F | VVS1 | Excellent
From $551
Compare at $570
GIA0.3ct | Radiant | F | VS1 | Excellent
From $424
Compare at $440
GIASave 15.5%0.3ct | Radiant | D | SI1 | Excellent
From $482
Compare at $570
GIA0.3ct | Radiant | D | VVS1 | Excellent
From $672
Compare at $688
Entry pricing in this category starts around $310.
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 $418 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 $521 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 124 comparable stones in this segment. Prices start around $310 and go up to $728.
Based on the latest market data, the average asking price is about $523 with a median around $521.
The observed spread is roughly $418 across tracked listings, which is about 57.4% 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 $521, 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 3 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 $418 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.