0.3 Carat Princess Lab Grown Diamond Prices Comparison
As of April 2026, 0.3 carat princess lab grown diamonds usually range from $106 to $838, with an average price of $397.In the last month, prices for these diamonds are up 1.3%.Compare 374 verified listings across 4 retailers tracked by CaratRadar.
0.3 Carat Princess Lab Grown Diamond Market Overview
CaratRadar currently tracks 374 verified 0.3-carat princess lab grown diamonds listed across 4 online retailers. Prices in this segment range from $106 to $838, with an average asking price of $397 and a median of $350.
The price spread of $732 (87.4% 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.
374 diamonds tracked in this segment
Price range: $106 to $838
Average price: $397
Median price: $350
Available across 4 retailers
Savings potential: up to 87.4%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
374
$106
$397
$350
$838
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 26.6%IGI | 0.3ct | Princess | E | VS1 | Ideal
From $316
Compare at $431
Save 26.6%IGI | 0.3ct | Princess | E | VS1 | Ideal
From $316
Compare at $431
Save 40.1%IGI | 0.3ct | Princess | E | VVS1 | Ideal
From $323
Compare at $538
Save 19.8%IGI | 0.3ct | Princess | D | VS1 | Ideal
From $360
Compare at $449
Save 12.8%IGI | 0.3ct | Princess | E | SI1 | Ideal
From $288
Compare at $330
Save 26.6%IGI | 0.3ct | Princess | E | VS1 | Ideal
From $316
Compare at $431
Save 31.8%IGI | 0.3ct | Princess | D | VVS2 | Ideal
From $218
Compare at $320
Save 40%IGI | 0.3ct | Princess | E | VVS2 | Ideal
From $303
Compare at $505
Save 22.8%IGI | 0.3ct | Princess | E | VVS2 | Ideal
From $390
Compare at $505
Save 40%IGI | 0.3ct | Princess | E | VVS2 | Ideal
From $303
Compare at $505
Save 31.8%IGI | 0.3ct | Princess | D | VVS2 | Ideal
From $218
Compare at $320
Save 26.6%IGI | 0.3ct | Princess | E | VS1 | Very Good
From $316
Compare at $431
Save 40%IGI | 0.3ct | Princess | E | VVS2 | Very Good
From $303
Compare at $505
Save 40%IGI | 0.3ct | Princess | E | VVS2 | Ideal
From $303
Compare at $505
Save 26.5%IGI | 0.3ct | Princess | E | VS2 | Ideal
From $304
Compare at $414
Save 40%IGI | 0.3ct | Princess | E | VVS2 | Ideal
From $303
Compare at $505
Save 31.8%IGI | 0.3ct | Princess | D | VVS2 | Ideal
From $218
Compare at $320
Save 26.6%IGI | 0.3ct | Princess | E | VS1 | Ideal
From $316
Compare at $431
Save 26.6%IGI | 0.3ct | Princess | E | VS1 | Ideal
From $316
Compare at $431
Save 40%IGI | 0.3ct | Princess | E | VVS2 | Ideal
From $303
Compare at $505
Save 40%IGI | 0.3ct | Princess | E | VVS2 | Ideal
From $303
Compare at $505
Save 22.8%IGI | 0.3ct | Princess | E | VVS2 | Ideal
From $390
Compare at $505
Save 40.1%IGI | 0.3ct | Princess | E | VVS1 | Ideal
From $323
Compare at $538
Save 40%IGI | 0.3ct | Princess | D | VVS1 | Ideal
From $326
Compare at $544
Save 40%IGI | 0.3ct | Princess | E | VVS2 | Ideal
From $303
Compare at $505
Save 26.6%IGI | 0.3ct | Princess | E | VS1 | Ideal
From $316
Compare at $431
Save 40%IGI | 0.3ct | Princess | E | VVS2 | Ideal
From $303
Compare at $505
Save 26.4%IGI | 0.3ct | Princess | F | VS1 | Ideal
From $315
Compare at $428
Save 40%IGI | 0.3ct | Princess | F | VVS1 | Ideal
From $326
Compare at $544
Save 26.4%IGI | 0.3ct | Princess | F | VS1 | Ideal
From $315
Compare at $428
Save 26.5%IGI | 0.3ct | Princess | F | VS2 | Ideal
From $303
Compare at $412
Save 10.9%IGI | 0.3ct | Princess | D | SI1 | Ideal
From $303
Compare at $340
Save 26.5%IGI | 0.3ct | Princess | E | VS2 | Ideal
From $304
Compare at $414
Save 26.6%IGI | 0.3ct | Princess | E | VS1 | Ideal
From $316
Compare at $431
Save 26.4%IGI | 0.3ct | Princess | D | VS2 | Ideal
From $315
Compare at $428
Save 39.9%IGI | 0.3ct | Princess | D | VS1 | Ideal
From $270
Compare at $449
Save 26.2%IGI | 0.3ct | Princess | D | VVS2 | Very Good
From $221
Compare at $300
Save 40%IGI | 0.31ct | Princess | D | VS1 | Ideal
From $279
Compare at $464
Save 26.5%IGI | 0.31ct | Princess | E | VS2 | Ideal
From $314
Compare at $428
Save 20.3%IGI | 0.31ct | Princess | D | VS1 | Ideal
From $370
Compare at $464
Save 40.1%IGI | 0.31ct | Princess | E | VVS2 | Ideal
From $313
Compare at $522
Save 40.1%IGI | 0.31ct | Princess | E | VVS2 | Ideal
From $313
Compare at $522
Save 40%IGI | 0.31ct | Princess | E | VS1 | Ideal
From $267
Compare at $445
Save 40%IGI | 0.31ct | Princess | E | VS1 | Ideal
From $267
Compare at $445
Save 40%IGI | 0.31ct | Princess | D | VS1 | Ideal
From $279
Compare at $464
Save 40.1%IGI | 0.31ct | Princess | E | VVS2 | Ideal
From $313
Compare at $522
Save 40.1%IGI | 0.31ct | Princess | E | VVS2 | Ideal
From $313
Compare at $522
Save 40.1%IGI | 0.31ct | Princess | E | VVS2 | Ideal
From $313
Compare at $522
Save 40%IGI | 0.31ct | Princess | E | VS1 | Ideal
From $267
Compare at $445
Save 40%IGI | 0.31ct | Princess | E | VS1 | Ideal
From $267
Compare at $445
Entry pricing in this category starts around $106.
What to Know When Shopping for 0.3 Carat Princess Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $732 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 $350 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.
- Lab-grown diamonds offer excellent value. Ensure the stone comes with a GIA or IGI certificate confirming it is laboratory-grown.
- Check shipping, insurance, and return policies. The lowest sticker price is not always the best deal once you factor in total cost of purchase.
- Princess-cut diamonds are prone to chipping at the corners. Look for protective prong settings and avoid stones with visible inclusions near the edges.
Frequently Asked Questions
We currently track 374 comparable stones in this segment. Prices start around $106 and go up to $838.
Based on the latest market data, the average asking price is about $397 with a median around $350.
The observed spread is roughly $732 across tracked listings, which is about 87.4% 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 $350, 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 4 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 $732 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 Lab Grown inventory for 0.3 carat Princess diamonds.