0.3 Carat Round Natural Diamond Prices Comparison
As of April 2026, 0.3 carat round natural diamonds usually range from $157 to $1,016, with an average price of $482.In the last month, prices for these diamonds are down 1.5%.Compare 17,805 verified listings across 6 retailers tracked by CaratRadar.
0.3 Carat Round Natural Diamond Market Overview
CaratRadar currently tracks 17,805 verified 0.3-carat round natural diamonds listed across 6 online retailers. Prices in this segment range from $157 to $1,016, with an average asking price of $482 and a median of $473.
The price spread of $859 (84.5% 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.
17,805 diamonds tracked in this segment
Price range: $157 to $1,016
Average price: $482
Median price: $473
Available across 6 retailers
Savings potential: up to 84.5%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
17,805
$157
$482
$473
$1,016
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
GIA | 0.3ct | Round | F | SI1 | Good
From $313
Compare at $320
GIA | 0.3ct | Round | E | SI2 | Very Good
From $319
Compare at $326
GIA | 0.3ct | Round | F | SI2 | Ideal
From $319
Compare at $325
GIA | 0.3ct | Round | K | VVS2 | Very Good
From $254
Compare at $282
GIA | 0.3ct | Round | F | SI2 | Excellent
From $319
Compare at $325
GIA | 0.3ct | Round | F | SI2 | Very Good
From $319
Compare at $325
GIA | 0.3ct | Round | F | SI2 | Good
From $319
Compare at $325
GIA | 0.3ct | Round | F | SI2 | Excellent
From $319
Compare at $325
GIA | 0.3ct | Round | F | SI2 | Excellent
From $319
Compare at $325
GIA | 0.3ct | Round | H | SI2 | Very Good
From $320
Compare at $327
Save 16.6%GIA | 0.3ct | Round | I | SI2 | Ideal
From $272
Compare at $326
Save 14.7%GIA | 0.3ct | Round | I | SI2 | Very Good
From $248
Compare at $291
GIA | 0.3ct | Round | J | VS2 | Excellent
From $319
Compare at $328
Save 31.3%GIA | 0.3ct | Round | F | VVS1 | Ideal
From $440
Compare at $640
GIA | 0.3ct | Round | F | I1 | Ideal
From $243
Compare at $254
GIA | 0.3ct | Round | I | VVS1 | Good
From $316
Compare at $317
Save 15.5%GIA | 0.3ct | Round | G | VS1 | Excellent
From $522
Compare at $618
GIA | 0.3ct | Round | H | SI1 | Ideal
From $450
Compare at $495
Save 18%GIA | 0.3ct | Round | G | SI2 | Good
From $257
Compare at $313
Save 31.2%GIA | 0.3ct | Round | F | VVS1 | Ideal
From $447
Compare at $650
Save 14.8%GIA | 0.3ct | Round | E | SI2 | Ideal
From $266
Compare at $312
Save 27%GIA | 0.3ct | Round | E | VVS1 | Ideal
From $518
Compare at $710
GIA | 0.3ct | Round | G | I1 | Ideal
From $210
Compare at $227
GIA | 0.3ct | Round | D | VVS1 | Ideal
From $480
Compare at $533
Save 14.2%GIA | 0.3ct | Round | G | SI2 | Excellent
From $453
Compare at $528
GIA | 0.3ct | Round | I | SI1 | Excellent
From $319
Compare at $328
Save 15.2%GIA | 0.3ct | Round | I | VVS1 | Ideal
From $390
Compare at $460
Save 15.2%GIA | 0.3ct | Round | D | VVS1 | Ideal
From $604
Compare at $712
Save 15.7%GIA | 0.3ct | Round | E | VVS2 | Ideal
From $580
Compare at $688
Save 21.1%GIA | 0.3ct | Round | F | IF | Excellent
From $497
Compare at $630
Save 15.6%GIA | 0.3ct | Round | E | VVS2 | Ideal
From $590
Compare at $699
GIA | 0.3ct | Round | D | VVS2 | Excellent
From $437
Compare at $480
Save 16.1%GIA | 0.3ct | Round | E | IF | Excellent
From $587
Compare at $700
Save 12.1%GIA | 0.3ct | Round | I | VVS1 | Ideal
From $422
Compare at $480
Save 27.3%GIA | 0.3ct | Round | G | IF | Ideal
From $458
Compare at $630
Save 15.1%GIA | 0.3ct | Round | D | VVS2 | Excellent
From $473
Compare at $557
Save 13.1%GIA | 0.3ct | Round | E | VS1 | Excellent
From $463
Compare at $533
GIA | 0.3ct | Round | L | VVS1 | Ideal
From $320
Compare at $328
Save 14.1%GIA | 0.3ct | Round | L | VVS1 | Ideal
From $253
Compare at $294
Save 26.6%GIA | 0.3ct | Round | E | VVS1 | Ideal
From $521
Compare at $710
Save 30.3%GIA | 0.3ct | Round | E | VVS1 | Very Good
From $467
Compare at $670
Save 14.4%GIA | 0.3ct | Round | D | VVS1 | Excellent
From $659
Compare at $770
Save 12.7%GIA | 0.3ct | Round | F | VVS1 | Excellent
From $563
Compare at $645
GIA | 0.3ct | Round | L | VVS2 | Excellent
From $308
Compare at $314
Save 28.4%GIA | 0.3ct | Round | E | IF | Ideal
From $458
Compare at $640
Save 16.6%GIA | 0.3ct | Round | E | IF | Excellent
From $592
Compare at $710
Save 12.7%GIA | 0.3ct | Round | F | VVS1 | Excellent
From $563
Compare at $645
Save 23%GIA | 0.3ct | Round | D | IF | Ideal
From $616
Compare at $800
Save 27.6%GIA | 0.3ct | Round | E | VVS2 | Ideal
From $456
Compare at $630
Save 15.4%GIA | 0.3ct | Round | G | VS1 | Ideal
From $515
Compare at $609
Entry pricing in this category starts around $157.
What to Know When Shopping for 0.3 Carat Round Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $859 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 $473 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.
- Round brilliants command a premium due to higher rough waste during cutting. If budget matters, consider oval or cushion shapes for similar visual size.
Frequently Asked Questions
We currently track 17,805 comparable stones in this segment. Prices start around $157 and go up to $1,016.
Based on the latest market data, the average asking price is about $482 with a median around $473.
The observed spread is roughly $859 across tracked listings, which is about 84.5% 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 $473, 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 $859 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 Round diamonds.