5.1 Carat Heart Lab Grown Diamond Prices Comparison
As of May 2026, 5.1 carat heart lab grown diamonds usually range from $620 to $17,483, with an average price of $3,646.In the last month, prices for these diamonds are down 5.4%.Compare 64 verified listings across 6 retailers tracked by CaratRadar.
5.1 Carat Heart Lab Grown Diamond Market Overview
CaratRadar currently tracks 64 verified 5.1-carat heart lab grown diamonds listed across 6 online retailers. Prices in this segment range from $620 to $17,482, with an average asking price of $3,646 and a median of $2,590.
The price spread of $16,862 (96.5% 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.
64 diamonds tracked in this segment
Price range: $620 to $17,482
Average price: $3,646
Median price: $2,590
Available across 6 retailers
Savings potential: up to 96.5%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
64
$620
$3,646
$2,590
$17,483
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 70.5%IGI | 5.1ct | Heart | E | SI1 | Ideal
From $787
Compare at $2,669
Save 58.2%IGI | 5.1ct | Heart | F | VVS2 | Excellent
From $1,102
Compare at $2,635
Save 58.2%IGI | 5.1ct | Heart | F | VVS2 | Excellent
From $1,102
Compare at $2,635
Save 78.7%IGI | 5.1ct | Heart | F | VS2 | Ideal
From $1,108
Compare at $5,190
Save 57.6%IGI | 5.11ct | Heart | E | VS1 | Very Good
From $1,130
Compare at $2,668
Save 56.1%IGI | 5.19ct | Heart | E | VS2 | Ideal
From $1,131
Compare at $2,576
Save 62%IGI | 5.1ct | Heart | D | VS1 | Very Good
From $1,165
Compare at $3,063
Save 46%IGI | 5.14ct | Heart | E | VS1 | Very Good
From $1,175
Compare at $2,174
Save 27.3%IGI | 5.16ct | Heart | E | VS2 | Very Good
From $1,176
Compare at $1,618
Save 59.2%IGI | 5.2ct | Heart | H | VVS2 | Very Good
From $1,177
Compare at $2,883
Save 27.3%IGI | 5.18ct | Heart | E | VS2 | Very Good
From $1,180
Compare at $1,624
Save 55.3%IGI | 5.11ct | Heart | E | VS1 | Excellent
From $1,200
Compare at $2,682
Save 55.1%IGI | 5.13ct | Heart | F | VVS2 | Ideal
From $1,208
Compare at $2,692
Save 55.1%IGI | 5.13ct | Heart | F | VVS2 | Ideal
From $1,208
Compare at $2,692
Save 55.3%IGI | 5.16ct | Heart | F | VVS2 | Ideal
From $1,215
Compare at $2,721
Save 57.4%IGI | 5.17ct | Heart | E | VVS2 | Ideal
From $1,217
Compare at $2,858
Save 50.8%IGI | 5.19ct | Heart | G | VS1 | Ideal
From $1,240
Compare at $2,519
Save 58.8%IGI | 5.1ct | Heart | D | VS1 | Very Good
From $1,273
Compare at $3,089
Save 49.5%IGI | 5.2ct | Heart | F | VS1 | Very Good
From $1,325
Compare at $2,625
IGI | 5.1ct | Heart | E | VS1
From $1,363
Compare at $1,365
Save 52.3%IGI | 5.16ct | Heart | E | VVS2 | Ideal
From $1,363
Compare at $2,859
Save 52.4%IGI | 5.17ct | Heart | E | VVS2 | Ideal
From $1,366
Compare at $2,869
Save 49.8%IGI | 5.1ct | Heart | E | VVS2 | Ideal
From $1,429
Compare at $2,844
Save 76.7%IGI | 5.15ct | Heart | D | VVS2 | Ideal
From $1,449
Compare at $6,230
Save 32%IGI | 5.17ct | Heart | E | VS1 | Ideal
From $1,472
Compare at $2,164
Save 32%IGI | 5.1ct | Heart | F | VS1 | Very Good
From $1,491
Compare at $2,192
Save 34.5%IGI | 5.12ct | Heart | G | VVS2 | Ideal
From $1,516
Compare at $2,316
Save 38.2%IGI | 5.13ct | Heart | F | VS1 | Very Good
From $1,537
Compare at $2,488
Save 52.5%IGI | 5.1ct | Heart | D | VVS2 | Very Good
From $1,568
Compare at $3,298
Save 52.1%IGI | 5.1ct | Heart | D | VVS2 | Ideal
From $1,595
Compare at $3,331
Save 52.1%IGI | 5.1ct | Heart | D | VVS2 | Ideal
From $1,595
Compare at $3,331
Save 39.4%IGI | 5.15ct | Heart | F | VVS2 | Ideal
From $1,646
Compare at $2,715
Save 64%IGI | 5.1ct | Heart | E | VVS1 | Ideal
From $1,918
Compare at $5,322
Save 68.4%IGI | 5.1ct | Heart | E | VVS1 | Very Good
From $1,966
Compare at $6,227
Save 64.4%IGI | 5.1ct | Heart | FANCY | VS1 | Very Good
From $1,981
Compare at $5,567
Save 65.4%IGI | 5.16ct | Heart | F | VVS1 | Excellent
From $2,068
Compare at $5,982
Save 74.8%IGI | 5.14ct | Heart | F | VS2 | Ideal
From $2,276
Compare at $9,020
Save 65%IGI | 5.14ct | Heart | FANCY | VVS2 | Very Good
From $2,340
Compare at $6,680
Save 64.4%IGI | 5.19ct | Heart | FANCY | VVS2 | Very Good
From $2,350
Compare at $6,595
Save 52.3%IGI | 5.1ct | Heart | FANCY | VS1 | Ideal
From $2,441
Compare at $5,122
IGI | 5.11ct | Heart | FANCY | VS1 | Very Good
From $2,442
Compare at $5,706
Save 57.2%IGI | 5.14ct | Heart | FANCY | VS1 | Good
From $2,457
Compare at $5,740
Save 76.9%IGI | 5.15ct | Heart | FANCY | VS1 | Very Good
From $2,513
Compare at $10,869
Save 60.1%IGI | 5.1ct | Heart | E | VS1 | Ideal
From $2,663
Compare at $6,670
Save 48.4%GIA | 5.19ct | Heart | G | VS1 | Excellent
From $2,708
Compare at $5,245
Save 57.2%IGI | 5.1ct | Heart | FANCY | VS1 | Very Good
From $2,708
Compare at $6,328
Save 57.2%IGI | 5.15ct | Heart | FANCY | VS1 | Good
From $2,735
Compare at $6,390
Save 57.2%IGI | 5.16ct | Heart | FANCY | VS2 | Excellent
From $2,741
Compare at $6,402
IGI | 5.11ct | Heart | FANCY | VVS2 | Very Good
From $2,809
Compare at $6,562
Save 72.2%GIA | 5.16ct | Heart | E | VS2 | Ideal
From $2,819
Compare at $10,150
Entry pricing in this category starts around $620.
What to Know When Shopping for 5.1 Carat Heart Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $16,862 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 $2,590 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 64 comparable stones in this segment. Prices start around $620 and go up to $17,482.
Based on the latest market data, the average asking price is about $3,646 with a median around $2,590.
The observed spread is roughly $16,862 across tracked listings, which is about 96.5% 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 $3,646. The median price is $2,590, 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 $16,862 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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