0.3 Carat Heart Lab Grown Diamond Prices Comparison
As of April 2026, 0.3 carat heart lab grown diamonds usually range from $101 to $837, with an average price of $326.In the last month, prices for these diamonds are up 0.4%.Compare 69 verified listings across 3 retailers tracked by CaratRadar.
0.3 Carat Heart Lab Grown Diamond Market Overview
CaratRadar currently tracks 69 verified 0.3-carat heart lab grown diamonds listed across 3 online retailers. Prices in this segment range from $101 to $837, with an average asking price of $326 and a median of $280.
The price spread of $736 (87.9% 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.
69 diamonds tracked in this segment
Price range: $101 to $837
Average price: $326
Median price: $280
Available across 3 retailers
Savings potential: up to 87.9%
Price Range Overview
As of Apr 13, 2026Real market range for this carat, shape, and diamond type.
69
$101
$326
$280
$837
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 36.6%IGI | 0.3ct | Heart | D | VS1 | Very Good
From $184
Compare at $290
Save 33.7%IGI | 0.3ct | Heart | D | VVS2 | Very Good
From $199
Compare at $300
IGI | 0.31ct | Heart | D | VVS2 | Ideal
From $390
Compare at $416
Save 34.6%IGI | 0.31ct | Heart | D | VS1 | Very Good
From $190
Compare at $290
Save 34%IGI | 0.31ct | Heart | E | VS1 | Good
From $191
Compare at $290
Save 15.1%IGI | 0.31ct | Heart | D | VVS1 | Very Good
From $272
Compare at $320
Save 25.6%IGI | 0.31ct | Heart | E | VVS2 | Ideal
From $223
Compare at $300
Save 23.1%IGI | 0.32ct | Heart | D | VVS2 | Very Good
From $246
Compare at $320
Save 34.7%IGI | 0.32ct | Heart | D | VS1 | Very Good
From $196
Compare at $300
Save 31.7%IGI | 0.32ct | Heart | D | VVS2 | Very Good
From $212
Compare at $310
Save 29.1%IGI | 0.32ct | Heart | E | VS1 | Ideal
From $220
Compare at $310
Save 29.1%IGI | 0.32ct | Heart | E | VS1 | Very Good
From $220
Compare at $310
Save 41.8%IGI | 0.33ct | Heart | E | SI1 | Good
From $169
Compare at $290
Save 34.9%IGI | 0.33ct | Heart | D | VS1 | Very Good
From $202
Compare at $310
Save 34.9%IGI | 0.33ct | Heart | D | VS1 | Good
From $202
Compare at $310
Save 20.8%IGI | 0.33ct | Heart | D | VVS2 | Very Good
From $254
Compare at $320
Save 25.8%IGI | 0.33ct | Heart | E | VVS2 | Good
From $238
Compare at $320
Save 29.7%IGI | 0.34ct | Heart | D | VVS2 | Excellent
From $225
Compare at $320
Save 31.9%IGI | 0.34ct | Heart | D | VVS2 | Ideal
From $225
Compare at $330
Save 23.8%IGI | 0.34ct | Heart | D | VVS1 | Ideal
From $259
Compare at $340
Save 33%IGI | 0.34ct | Heart | E | VS1 | Good
From $208
Compare at $310
Save 29.7%IGI | 0.34ct | Heart | D | VVS2 | Very Good
From $225
Compare at $320
Save 23.8%IGI | 0.34ct | Heart | D | VVS1 | Ideal
From $259
Compare at $340
Save 29.7%IGI | 0.34ct | Heart | D | VVS2 | Good
From $225
Compare at $320
Save 36.4%IGI | 0.34ct | Heart | E | VVS2 | Very Good
From $216
Compare at $340
Save 25.8%IGI | 0.34ct | Heart | E | VVS2 | Very Good
From $245
Compare at $330
Save 33.2%IGI | 0.35ct | Heart | D | VS1 | Very Good
From $214
Compare at $320
Save 33.2%IGI | 0.35ct | Heart | D | VS1 | Very Good
From $214
Compare at $320
Save 33.2%IGI | 0.35ct | Heart | D | VS1 | Very Good
From $214
Compare at $320
Save 23.8%IGI | 0.35ct | Heart | D | VVS1 | Excellent
From $267
Compare at $350
Save 33.2%IGI | 0.35ct | Heart | D | VS1 | Good
From $214
Compare at $320
Save 21%IGI | 0.35ct | Heart | D | VVS2 | Excellent
From $269
Compare at $340
Save 37.2%IGI | 0.36ct | Heart | D | VS2 | Ideal
From $220
Compare at $350
Save 28.3%IGI | 0.36ct | Heart | D | VVS2 | Ideal
From $265
Compare at $370
IGI | 0.36ct | Heart | D | IF | Very Good
From $338
Compare at $370
Save 33.4%IGI | 0.36ct | Heart | D | VS1 | Good
From $220
Compare at $330
Save 30.6%IGI | 0.36ct | Heart | E | VVS2 | Ideal
From $229
Compare at $330
Save 32.6%IGI | 0.36ct | Heart | E | IF | Ideal
From $256
Compare at $380
Save 21%IGI | 0.36ct | Heart | D | VVS2 | Ideal
From $276
Compare at $350
Save 36.4%IGI | 0.36ct | Heart | E | VVS2 | Very Good
From $229
Compare at $360
Save 23.8%IGI | 0.36ct | Heart | E | VVS2 | Very Good
From $259
Compare at $340
Save 24.7%IGI | 0.36ct | Heart | F | VVS2 | Good
From $211
Compare at $280
Save 33.5%IGI | 0.37ct | Heart | D | VS1 | Very Good
From $226
Compare at $340
Save 40.8%IGI | 0.37ct | Heart | E | VS2 | Ideal
From $207
Compare at $350
Save 18.9%IGI | 0.37ct | Heart | D | VVS2 | Very Good
From $284
Compare at $350
Save 23.3%IGI | 0.37ct | Heart | D | VVS2 | Good
From $284
Compare at $370
Save 18.9%IGI | 0.37ct | Heart | D | VVS2 | Excellent
From $284
Compare at $350
Save 18.9%IGI | 0.37ct | Heart | D | VVS2 | Very Good
From $284
Compare at $350
Save 30.3%IGI | 0.38ct | Heart | D | VVS2 | Excellent
From $251
Compare at $360
Save 34.6%IGI | 0.38ct | Heart | F | VVS2 | Ideal
From $222
Compare at $340
Entry pricing in this category starts around $101.
What to Know When Shopping for 0.3 Carat Heart Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $736 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 $280 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.
- Heart-shaped diamonds require excellent symmetry to look balanced. Aim for carat weights above 0.5 where the shape is clearly visible.
Frequently Asked Questions
We currently track 69 comparable stones in this segment. Prices start around $101 and go up to $837.
Based on the latest market data, the average asking price is about $326 with a median around $280.
The observed spread is roughly $736 across tracked listings, which is about 87.9% 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 $280, 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 $736 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 Heart diamonds.