0.3 Carat Heart Natural Diamond Prices Comparison
As of May 2026, 0.3 carat heart natural diamonds usually range from $275 to $11,096, with an average price of $628.In the last month, prices for these diamonds are down 6.3%.Compare 489 verified listings across 7 retailers tracked by CaratRadar.
0.3 Carat Heart Natural Diamond Market Overview
CaratRadar currently tracks 489 verified 0.3-carat heart natural diamonds listed across 7 online retailers. Prices in this segment range from $275 to $11,096, with an average asking price of $628 and a median of $534.
The price spread of $10,821 (97.5% 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.
489 diamonds tracked in this segment
Price range: $275 to $11,096
Average price: $628
Median price: $534
Available across 7 retailers
Savings potential: up to 97.5%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
489
$275
$628
$534
$11,096
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 | Heart | F | SI1 | Ideal
From $313
Compare at $316
Save 31.3%GIA | 0.4ct | Heart | J | SI1 | Excellent
From $323
Compare at $470
Save 11.1%GIA | 0.3ct | Heart | H | SI2 | Very Good
From $327
Compare at $368
Save 13.7%GIA | 0.4ct | Heart | J | SI2 | Excellent
From $329
Compare at $381
GIA | 0.3ct | Heart | I | VS2 | Ideal
From $330
Compare at $351
GIA | 0.3ct | Heart | I | VS1 | Very Good
From $334
Compare at $358
GIA | 0.4ct | Heart | J | SI1 | Very Good
From $342
Compare at $368
GIA | 0.4ct | Heart | K | VS2 | Excellent
From $343
Compare at $360
GIA | 0.3ct | Heart | F | SI2 | Very Good
From $348
Compare at $362
GIA | 0.31ct | Heart | H | SI1 | Excellent
From $348
Compare at $376
GIA | 0.36ct | Heart | H | SI1 | Ideal
From $350
Compare at $372
Save 27.3%GIA | 0.4ct | Heart | H | SI1 | Excellent
From $352
Compare at $484
Save 24.1%GIA | 0.32ct | Heart | J | SI1 | Excellent
From $356
Compare at $469
GIA | 0.37ct | Heart | H | SI1 | Ideal
From $357
Compare at $387
Save 26%GIA | 0.4ct | Heart | H | SI1 | Very Good
From $358
Compare at $484
GIA | 0.3ct | Heart | H | VS1 | Ideal
From $358
Compare at $389
Save 16.7%GIA | 0.4ct | Heart | K | VS2 | Excellent
From $358
Compare at $430
IGI | 0.4ct | Heart | G | SI1 | Ideal
From $360
Compare at $360
GIA | 0.4ct | Heart | J | SI1 | Ideal
From $360
Compare at $378
Save 32.8%GIA | 0.4ct | Heart | G | SI1 | Very Good
From $362
Compare at $539
GIA | 0.3ct | Heart | I | VS1 | Excellent
From $362
Compare at $394
Save 30.1%GIA | 0.4ct | Heart | J | VS1 | Very Good
From $367
Compare at $525
GIA | 0.36ct | Heart | H | SI2 | Ideal
From $368
Compare at $403
GIA | 0.4ct | Heart | I | SI1 | Excellent
From $368
Compare at $385
GIA | 0.37ct | Heart | J | VVS2 | Ideal
From $369
Compare at $403
Save 23.1%GIA | 0.4ct | Heart | H | SI1 | Excellent
From $371
Compare at $482
Save 11.8%GIA | 0.39ct | Heart | I | VS2 | Excellent
From $372
Compare at $422
Save 12%GIA | 0.39ct | Heart | H | SI1 | Ideal
From $374
Compare at $425
Save 28.6%GIA | 0.4ct | Heart | H | VS2 | Excellent
From $374
Compare at $524
Save 11.9%GIA | 0.4ct | Heart | J | VS1 | Ideal
From $376
Compare at $427
Save 12.1%GIA | 0.3ct | Heart | H | SI1 | Ideal
From $377
Compare at $429
Save 22.5%GIA | 0.4ct | Heart | J | VS2 | Excellent
From $378
Compare at $488
Save 28.8%GIA | 0.4ct | Heart | H | VS1 | Very Good
From $378
Compare at $531
Save 12.2%GIA | 0.38ct | Heart | H | VS2 | Ideal
From $379
Compare at $432
GIA | 0.33ct | Heart | F | SI2 | Ideal
From $380
Compare at $419
Save 12.6%GIA | 0.35ct | Heart | H | VS1 | Ideal
From $382
Compare at $437
Save 12.5%GIA | 0.37ct | Heart | I | IF | Excellent
From $383
Compare at $438
Save 12.5%GIA | 0.3ct | Heart | H | VS2 | Excellent
From $383
Compare at $438
Save 32.7%GIA | 0.4ct | Heart | H | SI1 | Very Good
From $383
Compare at $569
Save 12.5%GIA | 0.3ct | Heart | H | VS2 | Excellent
From $383
Compare at $438
Save 12.7%GIA | 0.39ct | Heart | H | VS2 | Ideal
From $384
Compare at $440
Save 12.5%GIA | 0.4ct | Heart | I | VS1 | Ideal
From $384
Compare at $439
Save 12.5%GIA | 0.35ct | Heart | H | SI2 | Ideal
From $385
Compare at $440
Save 12.3%GIA | 0.3ct | Heart | H | VS2 | Excellent
From $386
Compare at $440
Save 12.3%GIA | 0.31ct | Heart | F | SI2 | Excellent
From $387
Compare at $441
Save 12.7%GIA | 0.4ct | Heart | I | VS1 | Ideal
From $389
Compare at $446
GIA | 0.31ct | Heart | H | VS2 | Excellent
From $390
Compare at $421
Save 12.9%GIA | 0.38ct | Heart | H | SI1 | Ideal
From $390
Compare at $448
Save 11.4%GIA | 0.34ct | Heart | K | IF | Excellent
From $392
Compare at $442
Save 26.8%GIA | 0.4ct | Heart | I | VS1 | Very Good
From $392
Compare at $536
Entry pricing in this category starts around $275.
What to Know When Shopping for 0.3 Carat Heart Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $10,821 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 $534 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.
- 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 489 comparable stones in this segment. Prices start around $275 and go up to $11,096.
Based on the latest market data, the average asking price is about $628 with a median around $534.
The observed spread is roughly $10,821 across tracked listings, which is about 97.5% 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 $628. The median price is $534, 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 7 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 $10,821 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 Heart diamonds.