4.2 Carat Heart Lab Grown Diamond Prices Comparison
As of February 2026, 4.2 carat heart lab grown diamonds usually range from $941 to $22,320, with an average price of $2,291.In the last month, prices for these diamonds are up 2.9%.Compare 108 verified listings across 6 retailers tracked by CaratRadar.
4.2 Carat Heart Lab Grown Diamond Market Overview
CaratRadar currently tracks 108 verified 4.2-carat heart lab grown diamonds listed across 6 online retailers. Prices in this segment range from $941 to $22,320, with an average asking price of $2,291 and a median of $1,224.
The price spread of $21,379 (95.8% 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.
108 diamonds tracked in this segment
Price range: $941 to $22,320
Average price: $2,291
Median price: $1,224
Available across 6 retailers
Savings potential: up to 95.8%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
108
$941
$2,291
$1,224
$22,320
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
IGI4.16ct | Heart | G | VS1 | Very Good
From $1,324
Compare at $1,423
IGISave 69.6%4.16ct | Heart | F | IF | Ideal
From $13,886
Compare at $45,740
IGISave 47.1%4.16ct | Heart | F | VS1 | Ideal
From $1,464
Compare at $2,767
IGISave 88.7%4.16ct | Heart | E | VS1 | Ideal
From $1,112
Compare at $9,830
IGISave 73.7%4.16ct | Heart | E | VVS2 | Ideal
From $1,202
Compare at $4,575
IGISave 72.9%4.16ct | Heart | F | VVS2 | Ideal
From $1,148
Compare at $4,240
IGISave 90.3%4.16ct | Heart | D | VVS2 | Ideal
From $1,145
Compare at $11,760
IGISave 85.6%4.16ct | Heart | D | VS1 | Ideal
From $1,466
Compare at $10,160
IGISave 67.9%4.16ct | Heart | E | VS1 | Ideal
From $1,148
Compare at $3,575
IGISave 72.9%4.17ct | Heart | F | VVS2 | Ideal
From $1,151
Compare at $4,250
IGISave 73.7%4.17ct | Heart | E | VVS2 | Ideal
From $1,205
Compare at $4,585
IGISave 89.9%4.17ct | Heart | E | VVS2 | Ideal
From $1,013
Compare at $10,010
IGISave 67.9%4.17ct | Heart | E | VS1 | Ideal
From $1,151
Compare at $3,585
IGISave 89.2%4.17ct | Heart | E | VS1 | Ideal
From $1,063
Compare at $9,890
IGISave 74.4%4.17ct | Heart | D | VVS2 | Excellent
From $1,290
Compare at $5,045
IGISave 73.4%4.17ct | Heart | E | VVS2 | Ideal
From $1,218
Compare at $4,585
IGISave 90%4.17ct | Heart | E | VVS2 | Ideal
From $1,000
Compare at $9,970
IGISave 56.9%4.17ct | Heart | FANCY | VS1 | Very Good
From $1,679
Compare at $3,898
IGISave 82.1%4.17ct | Heart | D | VVS1 | Ideal
From $4,178
Compare at $23,390
IGISave 89.9%4.17ct | Heart | E | VVS2 | Ideal
From $1,013
Compare at $10,010
IGISave 90.1%4.17ct | Heart | E | VVS2 | Ideal
From $991
Compare at $10,010
IGISave 87.8%4.17ct | Heart | E | VVS2 | Ideal
From $1,218
Compare at $10,010
IGISave 74.2%4.18ct | Heart | D | VVS1 | Ideal
From $4,048
Compare at $15,700
IGISave 88.3%4.18ct | Heart | D | VVS2 | Ideal
From $1,386
Compare at $11,840
IGISave 90%4.18ct | Heart | E | VVS2 | Excellent
From $1,002
Compare at $10,000
IGISave 73.4%4.18ct | Heart | E | VVS2 | Ideal
From $1,221
Compare at $4,595
IGISave 68.4%4.18ct | Heart | E | VS2 | Ideal
From $1,068
Compare at $3,385
IGISave 56%4.18ct | Heart | E | VVS2 | Very Good
From $1,504
Compare at $3,414
IGISave 63.8%4.18ct | Heart | E | VS2 | Very Good
From $1,187
Compare at $3,278
IGISave 69.1%4.18ct | Heart | E | VS2 | Excellent
From $2,466
Compare at $7,970
IGISave 67.9%4.18ct | Heart | E | VS1 | Ideal
From $1,153
Compare at $3,590
IGISave 73.7%4.18ct | Heart | E | VVS2 | Ideal
From $1,208
Compare at $4,595
IGISave 73.4%4.18ct | Heart | E | VVS2 | Ideal
From $1,221
Compare at $4,595
IGISave 70.7%4.18ct | Heart | E | VVS1 | Excellent
From $3,377
Compare at $11,530
IGISave 77.2%4.18ct | Heart | D | IF | Very Good
From $7,918
Compare at $34,710
IGISave 90%4.18ct | Heart | E | VVS2 | Ideal
From $1,002
Compare at $10,000
IGISave 77.4%4.18ct | Heart | E | VVS2 | Ideal
From $1,040
Compare at $4,595
IGISave 78.2%4.18ct | Heart | E | VVS2 | Ideal
From $1,002
Compare at $4,595
IGISave 67.9%4.18ct | Heart | E | VS1 | Ideal
From $1,153
Compare at $3,590
IGISave 77.1%4.19ct | Heart | F | VS2 | Ideal
From $2,179
Compare at $9,530
IGISave 77.9%4.19ct | Heart | E | VS2 | Ideal
From $2,258
Compare at $10,230
IGISave 62.2%4.19ct | Heart | F | VS1 | Ideal
From $1,084
Compare at $2,870
IGISave 49.1%4.19ct | Heart | F | VVS1 | Very Good
From $3,302
Compare at $6,481
IGISave 73.4%4.19ct | Heart | E | VVS2 | Ideal
From $1,224
Compare at $4,605
4.19ct | Heart | E | VVS2 | Excellent
From $1,224
Compare at $4,440
IGISave 87%4.19ct | Heart | D | VVS2 | Ideal
From $1,545
Compare at $11,850
GIA4.19ct | Heart | E | VS2 | Ideal
From $7,990
Compare at $8,380
IGISave 89.9%4.19ct | Heart | E | VS1 | Ideal
From $1,000
Compare at $9,900
IGISave 73.4%4.19ct | Heart | E | VVS2 | Ideal
From $1,224
Compare at $4,605
IGISave 72.9%4.19ct | Heart | F | VVS2 | Ideal
From $1,156
Compare at $4,270
Entry pricing in this category starts around $941.
What to Know When Shopping for 4.2 Carat Heart Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $21,379 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 $1,224 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 108 comparable stones in this segment. Prices start around $941 and go up to $22,320.
Based on the latest market data, the average asking price is about $2,291 with a median around $1,224.
The observed spread is roughly $21,379 across tracked listings, which is about 95.8% 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 $1,224, 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 6 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 $21,379 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 4.2 carat Heart diamonds.