3.4 Carat Heart Lab Grown Diamond Prices Comparison
As of May 2026, 3.4 carat heart lab grown diamonds usually range from $425 to $22,350, with an average price of $3,129.In the last month, prices for these diamonds are down 6.3%.Compare 32 verified listings across 6 retailers tracked by CaratRadar.
3.4 Carat Heart Lab Grown Diamond Market Overview
CaratRadar currently tracks 32 verified 3.4-carat heart lab grown diamonds listed across 6 online retailers. Prices in this segment range from $425 to $22,350, with an average asking price of $3,129 and a median of $2,169.
The price spread of $21,924 (98.1% 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.
32 diamonds tracked in this segment
Price range: $425 to $22,350
Average price: $3,129
Median price: $2,169
Available across 6 retailers
Savings potential: up to 98.1%
Price Range Overview
As of May 30, 2026Real market range for this carat, shape, and diamond type.
32
$425
$3,129
$2,169
$22,350
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 64.4%IGI | 3.47ct | Heart | E | VS1 | Very Good
From $699
Compare at $1,965
Save 70.9%IGI | 3.41ct | Heart | E | VS1 | Excellent
From $708
Compare at $2,436
Save 61.2%IGI | 3.42ct | Heart | F | VS1 | Excellent
From $718
Compare at $1,850
Save 71%IGI | 3.47ct | Heart | E | VS1 | Very Good
From $720
Compare at $2,479
Save 79.9%IGI | 3.41ct | Heart | G | VS1 | Ideal
From $723
Compare at $3,590
Save 55.6%IGI | 3.42ct | Heart | G | VS1 | Ideal
From $740
Compare at $1,667
Save 60.9%IGI | 3.49ct | Heart | F | VS1 | Ideal
From $751
Compare at $1,919
Save 62.7%IGI | 3.49ct | Heart | D | VS2 | Very Good
From $751
Compare at $2,015
Save 56.3%IGI | 3.48ct | Heart | G | VS1 | Ideal
From $752
Compare at $1,721
Save 62.2%IGI | 3.4ct | Heart | E | VVS2 | Ideal
From $775
Compare at $2,050
Save 75.6%IGI | 3.43ct | Heart | D | VS1 | Ideal
From $820
Compare at $3,360
Save 65.9%IGI | 3.44ct | Heart | D | VVS2 | Very Good
From $821
Compare at $2,410
Save 56.6%IGI | 3.41ct | Heart | E | VS1 | Very Good
From $848
Compare at $1,952
Save 58.5%IGI | 3.4ct | Heart | E | VVS2 | Very Good
From $862
Compare at $2,079
Save 44.3%IGI | 3.42ct | Heart | H | VS1 | Ideal
From $871
Compare at $1,564
Save 59%IGI | 3.49ct | Heart | F | VVS2 | Excellent
From $901
Compare at $2,199
Save 50.7%IGI | 3.46ct | Heart | F | VS1 | Ideal
From $937
Compare at $1,900
Save 50%IGI | 3.4ct | Heart | H | VS2 | Ideal
From $941
Compare at $1,883
Save 72.4%IGI | 3.41ct | Heart | FANCY | VVS2 | Very Good
From $952
Compare at $3,447
Save 74.7%IGI | 3.42ct | Heart | D | VVS2 | Very Good
From $1,046
Compare at $4,135
Save 49.5%IGI | 3.4ct | Heart | D | VS1 | Ideal
From $1,051
Compare at $2,082
Save 21.4%IGI | 3.48ct | Heart | H | VS2 | Ideal
From $1,103
Compare at $1,403
Save 73.9%IGI | 3.46ct | Heart | F | VS1 | Ideal
From $1,111
Compare at $4,250
Save 72.9%IGI | 3.45ct | Heart | FANCY | VVS2 | Very Good
From $1,173
Compare at $4,324
Save 78.2%GIA | 3.46ct | Heart | F | VS2 | Ideal
From $1,299
Compare at $5,960
Save 68.2%IGI | 3.4ct | Heart | D | VVS2 | Ideal
From $1,307
Compare at $4,110
Save 63.8%IGI | 3.48ct | Heart | FANCY | VS1 | Very Good
From $1,802
Compare at $4,975
Save 69.9%IGI | 3.49ct | Heart | FANCY | VVS2 | Very Good
From $1,869
Compare at $6,209
Save 70.4%IGI | 3.49ct | Heart | FANCY | VS1 | Good
From $2,212
Compare at $7,479
Save 61.1%IGI | 3.4ct | Heart | G | VS2 | Ideal
From $5,360
Compare at $13,780
Save 79.3%IGI | 3.48ct | Heart | D | FL | Very Good
From $6,881
Compare at $33,166
Save 14%IGI | 3.47ct | Heart | F | VS2 | Ideal
From $24,181
Compare at $28,116
Entry pricing in this category starts around $425.
What to Know When Shopping for 3.4 Carat Heart Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $21,924 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 $2,169 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 32 comparable stones in this segment. Prices start around $425 and go up to $22,350.
Based on the latest market data, the average asking price is about $3,129 with a median around $2,169.
The observed spread is roughly $21,924 across tracked listings, which is about 98.1% 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 $3,129. The median price is $2,169, 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 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 $21,924 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 3.4 carat Heart diamonds.