0.3 Carat Natural Diamond Prices Comparison
As of July 2026, the average price of a 0.3 carat natural diamond is $492.0.3 carat diamonds can cost anywhere from $66 to $14,711 depending on shape, color, clarity, and other factors.In the last month, prices for these diamonds are down 0.6%.Compare 38,988 verified listings across 8 retailers in the tables below.
0.3 Carat Natural Diamond Market Overview
CaratRadar currently tracks 38,988 verified 0.3-carat natural diamonds listed across 8 online retailers. Prices in this segment range from $66 to $14,711, with an average asking price of $492 and a median of $476.
The price spread of $14,645 (99.6% 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.
38,988 diamonds tracked in this segment
Price range: $66 to $14,711
Average price: $492
Median price: $476
Available across 8 retailers
Savings potential: up to 99.6%
Price Range Overview
As of Jul 13, 2026Real market range for this carat, shape, and diamond type.
38,988
$66
$492
$476
$14,711
Price History
Price Comparison Matrix
0.3 Carat Natural Diamond Prices by Shape
Shape-level averages for this carat and type. Open each shape page for full market detail.
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
Save 12%IGI | 0.33ct | Round | L | SI2 | Ideal
From $146
Compare at $166
Save 11%IGI | 0.32ct | Round | L | I1 | Ideal
From $154
Compare at $173
Save 10.8%IGI | 0.31ct | Round | H | I1 | Excellent
From $157
Compare at $176
Save 10.8%IGI | 0.3ct | Round | G | I1 | Very Good
From $157
Compare at $176
Save 10.2%IGI | 0.3ct | Round | G | I1 | Ideal
From $158
Compare at $176
IGI | 0.31ct | Round | H | I1 | Ideal
From $160
Compare at $177
IGI | 0.3ct | Round | I | I1 | Ideal
From $166
Compare at $183
IGI | 0.3ct | Round | F | I1 | Ideal
From $170
Compare at $185
IGI | 0.3ct | Round | J | I1 | Very Good
From $176
Compare at $188
IGI | 0.3ct | Round | L | I1 | Good
From $182
Compare at $192
IGI | 0.3ct | Round | K | SI1 | Excellent
From $183
Compare at $194
IGI | 0.3ct | Round | K | SI2 | Ideal
From $183
Compare at $194
IGI | 0.32ct | Round | E | I1 | Excellent
From $183
Compare at $194
IGI | 0.32ct | Round | G | I1 | Ideal
From $183
Compare at $195
IGI | 0.3ct | Round | I | SI2 | Good
From $185
Compare at $195
IGI | 0.3ct | Round | F | I1 | Excellent
From $185
Compare at $197
IGI | 0.3ct | Round | L | SI2 | Very Good
From $186
Compare at $197
IGI | 0.3ct | Round | L | SI2 | Excellent
From $186
Compare at $197
IGI | 0.3ct | Round | L | SI1 | Ideal
From $187
Compare at $197
IGI | 0.32ct | Round | I | SI2 | Very Good
From $190
Compare at $200
IGI | 0.3ct | Round | K | I1 | Ideal
From $192
Compare at $201
IGI | 0.3ct | Round | K | I1 | Very Good
From $192
Compare at $201
IGI | 0.3ct | Round | K | I1 | Very Good
From $192
Compare at $201
IGI | 0.3ct | Round | K | I1 | Very Good
From $192
Compare at $201
IGI | 0.3ct | Round | I | SI2 | Good
From $192
Compare at $201
IGI | 0.3ct | Round | I | SI2 | Ideal
From $192
Compare at $201
IGI | 0.3ct | Round | I | SI2 | Excellent
From $192
Compare at $201
IGI | 0.3ct | Round | K | I1 | Ideal
From $192
Compare at $201
IGI | 0.31ct | Round | L | SI2 | Ideal
From $192
Compare at $201
IGI | 0.3ct | Round | E | I1 | Excellent
From $192
Compare at $201
IGI | 0.3ct | Round | L | VS2 | Excellent
From $192
Compare at $204
IGI | 0.38ct | Round | L | I1 | Ideal
From $193
Compare at $201
IGI | 0.31ct | Round | E | I1 | Ideal
From $195
Compare at $204
IGI | 0.31ct | Round | I | SI2 | Very Good
From $198
Compare at $206
IGI | 0.31ct | Round | I | SI2 | Very Good
From $198
Compare at $206
IGI | 0.3ct | Round | I | SI2 | Very Good
From $198
Compare at $206
IGI | 0.4ct | Round | J | I1 | Good
From $202
Compare at $207
IGI | 0.3ct | Round | F | SI2 | Very Good
From $202
Compare at $215
IGI | 0.33ct | Round | J | SI2 | Excellent
From $203
Compare at $209
IGI | 0.3ct | Round | I | SI2 | Very Good
From $203
Compare at $209
IGI | 0.3ct | Round | H | I1 | Very Good
From $204
Compare at $210
IGI | 0.32ct | Round | I | SI2 | Very Good
From $204
Compare at $210
IGI | 0.3ct | Round | G | I1 | Ideal
From $204
Compare at $210
IGI | 0.3ct | Round | G | I1 | Ideal
From $204
Compare at $210
IGI | 0.3ct | Round | J | SI2 | Very Good
From $205
Compare at $212
IGI | 0.31ct | Round | K | SI2 | Excellent
From $205
Compare at $210
IGI | 0.3ct | Round | I | SI2 | Very Good
From $206
Compare at $212
IGI | 0.31ct | Round | L | VS1 | Excellent
From $207
Compare at $215
GIA | 0.3ct | Marquise | H | SI2 | Ideal
From $208
Compare at $224
GIA | 0.3ct | Round | I | I1 | Good
From $208
Compare at $216
Entry pricing in this category starts around $66.
What to Know When Shopping for 0.3 Carat Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $14,645 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 $476 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.
Frequently Asked Questions
We currently track 38,988 comparable stones in this segment. Prices start around $66 and go up to $14,711.
Based on the latest market data, the average asking price is about $492 with a median around $476.
The observed spread is roughly $14,645 across tracked listings, which is about 99.6% 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 $492. The median price is $476, 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 $14,645 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.
Related Price Categories
Explore adjacent carat ranges and shapes to compare market shifts.
Tracking Natural inventory for 0.3 carat all-shape diamonds.