4.5 Carat Radiant Lab Grown Diamond Prices Comparison
As of May 2026, 4.5 carat radiant lab grown diamonds usually range from $583 to $24,944, with an average price of $3,963.In the last month, prices for these diamonds are down 7.2%.Compare 308 verified listings across 10 retailers tracked by CaratRadar.
4.5 Carat Radiant Lab Grown Diamond Market Overview
CaratRadar currently tracks 308 verified 4.5-carat radiant lab grown diamonds listed across 10 online retailers. Prices in this segment range from $583 to $24,944, with an average asking price of $3,963 and a median of $2,750.
The price spread of $24,361 (97.7% 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.
308 diamonds tracked in this segment
Price range: $583 to $24,944
Average price: $3,963
Median price: $2,750
Available across 10 retailers
Savings potential: up to 97.7%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
308
$583
$3,963
$2,750
$24,944
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 69.7%IGI | 4.52ct | Radiant | H | VVS2 | Excellent
From $771
Compare at $2,544
Save 69.7%IGI | 4.53ct | Radiant | E | VS1 | Very Good
From $781
Compare at $2,579
Save 67.2%IGI | 4.56ct | Radiant | F | VS1 | Very Good
From $796
Compare at $2,425
Save 69.9%IGI | 4.51ct | Radiant | E | VS2 | Very Good
From $803
Compare at $2,669
Save 28.5%IGI | 4.51ct | Radiant | G | SI1 | Very Good
From $816
Compare at $1,141
Save 68.3%IGI | 4.5ct | Radiant | G | VVS2 | Ideal
From $825
Compare at $2,606
Save 73.8%IGI | 4.58ct | Radiant | G | VS2 | Very Good
From $826
Compare at $3,154
IGI | 4.55ct | Radiant | F | VS1 | Very Good
From $828
Compare at $2,418
Save 69.1%IGI | 4.52ct | Radiant | E | VS2 | Very Good
From $829
Compare at $2,686
Save 65.6%IGI | 4.53ct | Radiant | F | VS1 | Very Good
From $830
Compare at $2,412
Save 65.6%IGI | 4.54ct | Radiant | F | VS1 | Very Good
From $832
Compare at $2,421
Save 65.7%IGI | 4.55ct | Radiant | F | VS1 | Very Good
From $834
Compare at $2,431
Save 65.9%IGI | 4.58ct | Radiant | F | VS1 | Very Good
From $839
Compare at $2,461
Save 70%IGI | 4.53ct | Radiant | F | VS2 | Very Good
From $841
Compare at $2,807
Save 67.8%IGI | 4.56ct | Radiant | E | VS1 | Very Good
From $841
Compare at $2,612
Save 75.9%IGI | 4.51ct | Radiant | E | VS1 | Excellent
From $846
Compare at $3,515
Save 67.1%IGI | 4.5ct | Radiant | E | VS1 | Ideal
From $853
Compare at $2,593
Save 79.5%IGI | 4.58ct | Radiant | G | VS2 | Very Good
From $865
Compare at $4,210
Save 60%IGI | 4.52ct | Radiant | G | VS1 | Very Good
From $868
Compare at $2,168
Save 66.7%IGI | 4.57ct | Radiant | E | VS1 | Very Good
From $877
Compare at $2,632
Save 66%IGI | 4.52ct | Radiant | E | VS1 | Very Good
From $878
Compare at $2,579
Save 77.2%IGI | 4.59ct | Radiant | H | VS1 | Excellent
From $880
Compare at $3,860
Save 66%IGI | 4.53ct | Radiant | E | VS1 | Very Good
From $880
Compare at $2,591
Save 66.4%IGI | 4.52ct | Radiant | G | VVS2 | Excellent
From $887
Compare at $2,642
Save 48.7%IGI | 4.59ct | Radiant | H | VS1 | Ideal
From $893
Compare at $1,742
Save 64.6%IGI | 4.5ct | Radiant | E | VS1 | Very Good
From $905
Compare at $2,556
IGI | 4.5ct | Radiant | G | SI1 | Ideal
From $910
Compare at $911
Save 65.8%IGI | 4.59ct | Radiant | E | VS1 | Very Good
From $910
Compare at $2,660
Save 64.4%IGI | 4.5ct | Radiant | E | VS1 | Very Good
From $913
Compare at $2,566
Save 64.6%IGI | 4.52ct | Radiant | E | VS1 | Very Good
From $917
Compare at $2,588
Save 62%IGI | 4.53ct | Radiant | F | VS1 | Very Good
From $919
Compare at $2,416
Save 65%IGI | 4.52ct | Radiant | E | VS1 | Ideal
From $921
Compare at $2,633
Save 66.1%IGI | 4.55ct | Radiant | E | VS2 | Very Good
From $926
Compare at $2,732
Save 66.3%IGI | 4.57ct | Radiant | E | VS2 | Very Good
From $929
Compare at $2,755
Save 67.9%IGI | 4.59ct | Radiant | F | VS2 | Very Good
From $931
Compare at $2,896
Save 65%IGI | 4.55ct | Radiant | G | VVS2 | Very Good
From $936
Compare at $2,675
Save 66.8%IGI | 4.51ct | Radiant | F | VS2 | Ideal
From $938
Compare at $2,824
Save 64.2%IGI | 4.57ct | Radiant | E | VS1 | Very Good
From $944
Compare at $2,638
Save 63.9%IGI | 4.56ct | Radiant | E | VS1 | Very Good
From $948
Compare at $2,626
Save 27.3%IGI | 4.58ct | Radiant | F | VVS2 | Very Good
From $953
Compare at $1,311
Save 27.3%IGI | 4.59ct | Radiant | F | VVS2 | Very Good
From $955
Compare at $1,314
Save 60.8%IGI | 4.54ct | Radiant | F | VS1 | Ideal
From $963
Compare at $2,454
Save 70%IGI | 4.56ct | Radiant | E | VS2 | Excellent
From $966
Compare at $3,223
Save 63%IGI | 4.53ct | Radiant | E | VVS2 | Ideal
From $967
Compare at $2,615
Save 79.8%IGI | 4.51ct | Radiant | G | VS1 | Excellent
From $974
Compare at $4,820
Save 60.3%IGI | 4.58ct | Radiant | F | VVS2 | Very Good
From $981
Compare at $2,473
Save 79.5%IGI | 4.52ct | Radiant | F | VS2 | Ideal
From $996
Compare at $4,870
Save 71.4%IGI | 4.58ct | Radiant | E | VS1 | Ideal
From $998
Compare at $3,490
Save 71.4%IGI | 4.58ct | Radiant | E | VS1 | Very Good
From $998
Compare at $3,490
Save 62.8%IGI | 4.52ct | Radiant | E | VVS2 | Ideal
From $1,000
Compare at $2,691
Entry pricing in this category starts around $583.
What to Know When Shopping for 4.5 Carat Radiant Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $24,361 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 $2,750 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.
- Radiant cuts combine the elegance of emerald shapes with the brilliance of round cuts, offering good value per carat.
Frequently Asked Questions
We currently track 308 comparable stones in this segment. Prices start around $583 and go up to $24,944.
Based on the latest market data, the average asking price is about $3,963 with a median around $2,750.
The observed spread is roughly $24,361 across tracked listings, which is about 97.7% 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 $3,963. The median price is $2,750, 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 $24,361 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.
Related Price Categories
Explore adjacent carat ranges and shapes to compare market shifts.
4.4 Carat Radiant Lab Grown Diamond Prices
4.6 Carat Radiant Lab Grown Diamond Prices
4.3 Carat Radiant Lab Grown Diamond Prices
4.7 Carat Radiant Lab Grown Diamond Prices
4.2 Carat Radiant Lab Grown Diamond Prices
4.8 Carat Radiant Lab Grown Diamond Prices
4.1 Carat Radiant Lab Grown Diamond Prices
4.5 Carat Round Lab Grown Diamond Prices
4.5 Carat Oval Lab Grown Diamond Prices
4.5 Carat Emerald Lab Grown Diamond Prices
4.5 Carat Cushion Lab Grown Diamond Prices
4.5 Carat Pear Lab Grown Diamond Prices
Tracking Lab Grown inventory for 4.5 carat Radiant diamonds.