4.5 Carat Heart Lab Grown Diamond Prices Comparison
As of October 2026, 4.5 carat heart lab grown diamonds in the 4.50–4.99 carat benchmark range usually range from $595 to $38,260, with an average price of $3,469.In the last month, prices for these diamonds are down 0.2%.Compare 155 verified listings across 10 retailers tracked by CaratRadar.
4.5 Carat Heart Lab Grown Diamond Market Overview
CaratRadar currently tracks 155 verified 4.5-carat heart lab grown diamonds in the 4.50–4.99 carat benchmark range, listed across 10 online retailers. Prices in this segment range from $595 to $38,260, with an average asking price of $3,469 and a median of $2,299.
The price spread of $37,665 (98.4% 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 use the same benchmark range throughout the page and 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.
155 diamonds tracked in the 4.50–4.99 carat benchmark
Price range: $595 to $38,260
Average price: $3,469
Median price: $2,299
Available across 10 retailers
Savings potential: up to 98.4%
Price Range Overview
As of Oct 15, 2026Real market range for this carat, shape, and diamond type.
155
$595
$3,469
$2,299
$38,260
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers in the same benchmark range and open any listing for full details.
Save 65.3%IGI | 4.53ct | Heart | G | VVS2 | Ideal
From $694
Compare at $1,998
Save 68.7%IGI | 4.58ct | Heart | F | VS2 | Very Good
From $721
Compare at $2,300
Save 53.3%IGI | 4.76ct | Heart | FANCY | SI1 | Good
From $774
Compare at $1,656
Save 70.9%IGI | 4.51ct | Heart | F | VVS2 | Excellent
From $819
Compare at $2,813
Save 70.7%IGI | 4.53ct | Heart | E | VS1 | Good
From $824
Compare at $2,811
Save 70.9%IGI | 4.55ct | Heart | F | VVS2 | Ideal
From $826
Compare at $2,838
Save 70.7%IGI | 4.51ct | Heart | F | VS2 | Very Good
From $828
Compare at $2,826
Save 70.7%IGI | 4.56ct | Heart | E | VS1 | Very Good
From $831
Compare at $2,834
Save 70.7%IGI | 4.58ct | Heart | E | VS1 | Very Good
From $833
Compare at $2,841
Save 78.2%IGI | 4.58ct | Heart | F | VS1 | Excellent
From $857
Compare at $3,928
Save 70.4%IGI | 4.72ct | Heart | F | VVS2 | Very Good
From $859
Compare at $2,904
Save 72%IGI | 4.51ct | Heart | E | VVS2 | Very Good
From $866
Compare at $3,092
Save 70.4%IGI | 4.94ct | Heart | E | VS1 | Very Good
From $871
Compare at $2,946
Save 70.4%IGI | 4.56ct | Heart | E | VVS2 | Excellent
From $871
Compare at $2,943
Save 70.4%IGI | 4.59ct | Heart | E | VVS2 | Very Good
From $875
Compare at $2,957
Save 51.3%IGI | 4.57ct | Heart | E | VS2 | Ideal
From $898
Compare at $1,844
Save 70.4%IGI | 4.53ct | Heart | E | VVS2 | Ideal
From $905
Compare at $3,059
Save 71%IGI | 4.53ct | Heart | D | VS1 | Ideal
From $915
Compare at $3,150
Save 44.2%IGI | 4.52ct | Heart | FANCY | VS1 | Excellent
From $926
Compare at $1,659
Save 55.6%IGI | 4.57ct | Heart | E | VVS2 | Good
From $932
Compare at $2,100
Save 78.4%IGI | 4.72ct | Heart | H | VVS2 | Ideal
From $937
Compare at $4,335
Save 42.2%IGI | 4.68ct | Heart | FANCY | VS2 | Good
From $942
Compare at $1,629
Save 68.1%IGI | 4.73ct | Heart | G | VVS2 | Ideal
From $943
Compare at $2,953
Save 68.1%IGI | 4.5ct | Heart | D | VS1 | Very Good
From $946
Compare at $2,962
Save 63.9%IGI | 4.51ct | Heart | E | VS1 | Very Good
From $954
Compare at $2,643
Save 64.1%IGI | 4.52ct | Heart | F | VS1 | Excellent
From $960
Compare at $2,675
Save 67.5%IGI | 4.99ct | Heart | D | VS1 | Very Good
From $971
Compare at $2,985
Save 54.8%IGI | 4.98ct | Heart | FANCY | VS1 | Excellent
From $974
Compare at $2,154
Save 64.3%IGI | 4.55ct | Heart | E | VS1 | Very Good
From $990
Compare at $2,774
Save 63.9%IGI | 4.5ct | Heart | E | VS1 | Very Good
From $990
Compare at $2,744
Save 34.9%IGI | 4.72ct | Heart | E | VS2 | Excellent
From $998
Compare at $1,532
Save 71.9%IGI | 4.61ct | Heart | E | VVS2 | Ideal
From $1,000
Compare at $3,565
Save 64.3%IGI | 4.51ct | Heart | F | VS1 | Very Good
From $1,002
Compare at $2,804
Save 63.9%IGI | 4.56ct | Heart | E | VS2 | Very Good
From $1,003
Compare at $2,780
Save 71.2%IGI | 4.51ct | Heart | E | VVS2 | Very Good
From $1,004
Compare at $3,488
Save 78.4%IGI | 4.52ct | Heart | E | VVS2 | Ideal
From $1,006
Compare at $4,660
Save 49.3%IGI | 4.54ct | Heart | E | VS1 | Ideal
From $1,008
Compare at $1,990
Save 71.2%IGI | 4.53ct | Heart | E | VVS2 | Ideal
From $1,008
Compare at $3,503
Save 78.4%IGI | 4.54ct | Heart | E | VVS2 | Ideal
From $1,011
Compare at $4,681
Save 78.4%IGI | 4.54ct | Heart | E | VVS2 | Excellent
From $1,011
Compare at $4,681
Save 78.4%IGI | 4.54ct | Heart | E | VVS2 | Ideal
From $1,011
Compare at $4,681
Save 71.2%IGI | 4.55ct | Heart | E | VVS2 | Ideal
From $1,012
Compare at $3,518
Save 71.2%IGI | 4.55ct | Heart | E | VVS2 | Very Good
From $1,012
Compare at $3,518
Save 79.9%IGI | 4.53ct | Heart | F | VVS2 | Ideal
From $1,017
Compare at $5,060
Save 71.2%IGI | 4.57ct | Heart | E | VVS2 | Ideal
From $1,017
Compare at $3,534
Save 79%IGI | 4.54ct | Heart | D | VVS2 | Ideal
From $1,017
Compare at $4,837
Save 71.2%IGI | 4.57ct | Heart | E | VVS2 | Very Good
From $1,017
Compare at $3,534
Save 71.2%IGI | 4.57ct | Heart | E | VVS2 | Ideal
From $1,017
Compare at $3,534
Save 78.4%IGI | 4.58ct | Heart | E | VVS2 | Ideal
From $1,019
Compare at $4,722
Save 71.2%IGI | 4.59ct | Heart | E | VVS2 | Ideal
From $1,022
Compare at $3,549
Entry pricing in this benchmark range starts around $595.
What to Know When Shopping for 4.5 Carat Heart Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $37,665 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 $2,299 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 155 comparable stones in the 4.50–4.99 carat benchmark range. Prices start around $595 and go up to $38,260.
Based on the latest market data, the average asking price is about $3,469 with a median around $2,299.
The observed spread is roughly $37,665 across tracked listings, which is about 98.4% from highest to lowest offer in the 4.50–4.99 carat benchmark range.
We refresh pricing data daily so these pages stay current with market changes.
Based on completed market data, the fair market benchmark is $3,469. The median price is $2,299, 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 10 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 $37,665 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 the 4.50–4.99 carat Heart diamond benchmark.