0.4 Carat Heart Lab Grown Diamond Prices Comparison
As of May 2026, 0.4 carat heart lab grown diamonds usually range from $96 to $1,027, with an average price of $351.In the last month, prices for these diamonds are down 5.3%.Compare 173 verified listings across 5 retailers tracked by CaratRadar.
0.4 Carat Heart Lab Grown Diamond Market Overview
CaratRadar currently tracks 173 verified 0.4-carat heart lab grown diamonds listed across 5 online retailers. Prices in this segment range from $96 to $1,027, with an average asking price of $351 and a median of $319.
The price spread of $931 (90.7% 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.
173 diamonds tracked in this segment
Price range: $96 to $1,027
Average price: $351
Median price: $319
Available across 5 retailers
Savings potential: up to 90.7%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
173
$96
$351
$319
$1,027
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 72.6%IGI | 0.42ct | Heart | D | VS2 | Very Good
From $96
Compare at $350
Save 72.4%IGI | 0.44ct | Heart | F | VVS2 | Very Good
From $102
Compare at $370
Save 70.8%IGI | 0.41ct | Heart | F | VVS2 | Excellent
From $105
Compare at $360
Save 72.8%IGI | 0.46ct | Heart | D | VS1 | Very Good
From $106
Compare at $390
Save 58.5%IGI | 0.41ct | Heart | D | VS1 | Very Good
From $108
Compare at $260
Save 58.4%IGI | 0.43ct | Heart | E | VS2 | Very Good
From $109
Compare at $262
Save 72.3%IGI | 0.48ct | Heart | E | VS1 | Good
From $111
Compare at $400
Save 66.8%IGI | 0.41ct | Heart | E | VVS2 | Excellent
From $113
Compare at $340
Save 68.1%IGI | 0.41ct | Heart | E | VS1 | Ideal
From $115
Compare at $360
Save 72%IGI | 0.46ct | Heart | D | VVS1 | Very Good
From $115
Compare at $410
Save 72.6%IGI | 0.49ct | Heart | E | VVS2 | Good
From $115
Compare at $420
Save 55.1%IGI | 0.49ct | Heart | D | VVS2 | Very Good
From $115
Compare at $256
Save 10.9%IGI | 0.42ct | Heart | I | VS1 | Very Good
From $115
Compare at $129
Save 69.5%IGI | 0.43ct | Heart | E | VS1 | Very Good
From $116
Compare at $380
Save 54.5%IGI | 0.44ct | Heart | D | VS1 | Very Good
From $116
Compare at $255
Save 54.7%IGI | 0.42ct | Heart | D | VVS2 | Very Good
From $118
Compare at $260
Save 54.7%IGI | 0.47ct | Heart | D | VS1 | Very Good
From $120
Compare at $265
Save 54.7%IGI | 0.47ct | Heart | D | VS1 | Very Good
From $120
Compare at $265
Save 68.2%IGI | 0.42ct | Heart | E | VVS2 | Ideal
From $121
Compare at $380
Save 69.5%IGI | 0.46ct | Heart | F | VVS2 | Ideal
From $122
Compare at $400
Save 58.6%IGI | 0.45ct | Heart | D | VVS2 | Very Good
From $123
Compare at $297
Save 54.6%IGI | 0.41ct | Heart | D | VVS2 | Ideal
From $123
Compare at $271
Save 54.6%IGI | 0.41ct | Heart | D | VVS2 | Ideal
From $123
Compare at $271
Save 69.3%IGI | 0.48ct | Heart | D | VS2 | Very Good
From $123
Compare at $400
Save 70.7%IGI | 0.49ct | Heart | D | VS1 | Very Good
From $123
Compare at $420
Save 58.8%IGI | 0.49ct | Heart | D | VS1 | Good
From $123
Compare at $298
Save 64.6%IGI | 0.41ct | Heart | D | VS2 | Good
From $124
Compare at $350
Save 58.8%IGI | 0.46ct | Heart | D | VVS2 | Good
From $125
Compare at $303
Save 54.4%IGI | 0.45ct | Heart | D | VS1 | Ideal
From $125
Compare at $274
Save 68.8%IGI | 0.47ct | Heart | F | VVS2 | Ideal
From $125
Compare at $400
Save 54.5%IGI | 0.42ct | Heart | D | VVS2 | Ideal
From $126
Compare at $277
Save 66.8%IGI | 0.42ct | Heart | D | VVS2 | Very Good
From $126
Compare at $380
Save 58.6%IGI | 0.47ct | Heart | D | VS1 | Good
From $126
Compare at $304
Save 67.7%IGI | 0.45ct | Heart | E | VS1 | Very Good
From $126
Compare at $390
Save 58.7%IGI | 0.47ct | Heart | D | VVS2 | Very Good
From $126
Compare at $305
Save 64.7%IGI | 0.42ct | Heart | D | VS2 | Very Good
From $127
Compare at $360
Save 64.7%IGI | 0.42ct | Heart | D | VS2 | Very Good
From $127
Compare at $360
Save 67.4%IGI | 0.44ct | Heart | E | VVS2 | Ideal
From $127
Compare at $390
Save 67.7%IGI | 0.41ct | Heart | D | VVS2 | Very Good
From $128
Compare at $396
Save 67.8%IGI | 0.43ct | Heart | D | VVS2 | Ideal
From $129
Compare at $400
Save 67.7%IGI | 0.45ct | Heart | D | VS1 | Good
From $132
Compare at $409
Save 67.5%IGI | 0.42ct | Heart | D | VVS2 | Excellent
From $132
Compare at $406
Save 68.6%IGI | 0.49ct | Heart | E | VS1 | Good
From $132
Compare at $420
Save 67%IGI | 0.44ct | Heart | D | VVS2 | Very Good
From $132
Compare at $400
Save 64.1%IGI | 0.44ct | Heart | D | VS2 | Very Good
From $133
Compare at $370
Save 67.5%IGI | 0.43ct | Heart | E | VVS1 | Excellent
From $134
Compare at $412
Save 67.8%IGI | 0.43ct | Heart | D | VVS2 | Very Good
From $134
Compare at $416
Save 67.3%IGI | 0.48ct | Heart | E | VS1 | Ideal
From $134
Compare at $410
Save 62.5%IGI | 0.43ct | Heart | D | SI1 | Good
From $135
Compare at $360
Save 62.5%IGI | 0.41ct | Heart | D | VS2 | Ideal
From $135
Compare at $360
Entry pricing in this category starts around $96.
What to Know When Shopping for 0.4 Carat Heart Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $931 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 $319 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 173 comparable stones in this segment. Prices start around $96 and go up to $1,027.
Based on the latest market data, the average asking price is about $351 with a median around $319.
The observed spread is roughly $931 across tracked listings, which is about 90.7% 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 $351. The median price is $319, 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 5 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 $931 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 0.4 carat Heart diamonds.