4.5 Carat Oval Lab Grown Diamond Prices Comparison
As of May 2026, 4.5 carat oval lab grown diamonds usually range from $637 to $28,453, with an average price of $4,045.In the last month, prices for these diamonds are down 4.8%.Compare 561 verified listings across 9 retailers tracked by CaratRadar.
4.5 Carat Oval Lab Grown Diamond Market Overview
CaratRadar currently tracks 561 verified 4.5-carat oval lab grown diamonds listed across 9 online retailers. Prices in this segment range from $637 to $28,453, with an average asking price of $4,045 and a median of $2,804.
The price spread of $27,816 (97.8% 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.
561 diamonds tracked in this segment
Price range: $637 to $28,453
Average price: $4,045
Median price: $2,804
Available across 9 retailers
Savings potential: up to 97.8%
Price Range Overview
As of May 28, 2026Real market range for this carat, shape, and diamond type.
561
$637
$4,045
$2,804
$28,453
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 51.1%IGI | 4.5ct | Oval | F | SI1 | Ideal
From $766
Compare at $1,565
Save 52.7%IGI | 4.59ct | Oval | F | SI1 | Ideal
From $768
Compare at $1,622
Save 76.9%IGI | 4.53ct | Oval | D | SI1 | Ideal
From $770
Compare at $3,331
Save 51.6%IGI | 4.55ct | Oval | F | SI1 | Ideal
From $774
Compare at $1,598
Save 79.6%IGI | 4.57ct | Oval | G | SI1 | Ideal
From $810
Compare at $3,970
Save 77.9%IGI | 4.57ct | Oval | H | VS2 | Ideal
From $824
Compare at $3,730
Save 49%IGI | 4.59ct | Oval | F | SI1 | Ideal
From $833
Compare at $1,634
Save 50.5%IGI | 4.59ct | Oval | G | VVS2 | Excellent
From $840
Compare at $1,697
Save 60.5%IGI | 4.51ct | Oval | G | VS1 | Very Good
From $847
Compare at $2,144
Save 69.4%IGI | 4.5ct | Oval | F | VS2 | Ideal
From $849
Compare at $2,779
Save 67.1%IGI | 4.52ct | Oval | E | SI1 | Ideal
From $859
Compare at $2,614
Save 63.8%IGI | 4.5ct | Oval | F | VS1 | Very Good
From $863
Compare at $2,382
Save 78.5%IGI | 4.58ct | Oval | H | VS2 | Ideal
From $864
Compare at $4,020
Save 63.9%IGI | 4.52ct | Oval | F | VS1 | Very Good
From $866
Compare at $2,402
Save 63.9%IGI | 4.52ct | Oval | F | VS1 | Very Good
From $866
Compare at $2,402
Save 63.9%IGI | 4.52ct | Oval | F | VS1 | Very Good
From $866
Compare at $2,402
Save 63.6%IGI | 4.51ct | Oval | F | VS1 | Very Good
From $870
Compare at $2,389
Save 63.7%IGI | 4.53ct | Oval | F | VS1 | Very Good
From $874
Compare at $2,409
Save 67.1%IGI | 4.54ct | Oval | G | VVS2 | Very Good
From $876
Compare at $2,665
Save 63.1%IGI | 4.51ct | Oval | F | VS1 | Very Good
From $884
Compare at $2,395
Save 63%IGI | 4.52ct | Oval | F | VS1 | Very Good
From $885
Compare at $2,395
Save 78.7%IGI | 4.51ct | Oval | H | VS1 | Very Good
From $890
Compare at $4,180
Save 23.2%IGI | 4.51ct | Oval | H | VVS2 | Good
From $898
Compare at $1,169
Save 63.6%IGI | 4.59ct | Oval | F | VS1 | Excellent
From $900
Compare at $2,471
Save 79.8%IGI | 4.5ct | Oval | F | VS2 | Ideal
From $909
Compare at $4,490
Save 65.8%IGI | 4.56ct | Oval | G | VVS2 | Very Good
From $917
Compare at $2,682
Save 27%IGI | 4.51ct | Oval | G | VS1 | Very Good
From $918
Compare at $1,257
Save 71.7%IGI | 4.51ct | Oval | E | VS2 | Good
From $921
Compare at $3,258
Save 71.7%IGI | 4.51ct | Oval | E | VS2 | Excellent
From $921
Compare at $3,258
Save 62.6%IGI | 4.58ct | Oval | F | VS1 | Ideal
From $928
Compare at $2,482
Save 61.2%IGI | 4.51ct | Oval | F | VS1 | Very Good
From $928
Compare at $2,389
Save 61.4%IGI | 4.54ct | Oval | F | VS1 | Very Good
From $934
Compare at $2,420
Save 64.3%IGI | 4.59ct | Oval | H | VVS2 | Excellent
From $946
Compare at $2,648
Save 56.9%IGI | 4.52ct | Oval | F | VS2 | Very Good
From $955
Compare at $2,215
Save 64.4%IGI | 4.5ct | Oval | E | VS2 | Very Good
From $956
Compare at $2,683
Save 23.6%IGI | 4.5ct | Oval | E | VS2 | Ideal
From $956
Compare at $1,251
Save 73.1%IGI | 4.54ct | Oval | E | VS1 | Very Good
From $958
Compare at $3,567
Save 60%IGI | 4.51ct | Oval | F | VS1 | Very Good
From $959
Compare at $2,395
Save 62.9%IGI | 4.5ct | Oval | E | VS1 | Very Good
From $959
Compare at $2,585
Save 60.1%IGI | 4.52ct | Oval | F | VS1 | Very Good
From $960
Compare at $2,405
Save 64.6%IGI | 4.53ct | Oval | E | VS2 | Very Good
From $962
Compare at $2,718
Save 60.6%IGI | 4.57ct | Oval | F | VVS2 | Very Good
From $964
Compare at $2,449
Save 63.9%IGI | 4.54ct | Oval | G | VVS2 | Very Good
From $965
Compare at $2,671
Save 79.1%IGI | 4.58ct | Oval | D | VS2 | Ideal
From $965
Compare at $4,625
Save 18.3%IGI | 4.59ct | Oval | F | VVS2 | Excellent
From $968
Compare at $1,185
Save 71.1%IGI | 4.5ct | Oval | G | VVS2 | Excellent
From $971
Compare at $3,359
Save 60.3%IGI | 4.57ct | Oval | F | VVS2 | Very Good
From $974
Compare at $2,452
Save 60.8%IGI | 4.59ct | Oval | F | VS1 | Excellent
From $975
Compare at $2,488
Save 59%IGI | 4.5ct | Oval | F | VVS2 | Very Good
From $978
Compare at $2,386
Save 71.5%IGI | 4.5ct | Oval | E | VS1 | Ideal
From $978
Compare at $3,429
Entry pricing in this category starts around $637.
What to Know When Shopping for 4.5 Carat Oval Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $27,816 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 $2,804 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.
- Oval diamonds can appear larger than rounds of the same carat weight due to their elongated face-up area. Watch for the bow-tie effect in lower-quality cuts.
Frequently Asked Questions
We currently track 561 comparable stones in this segment. Prices start around $637 and go up to $28,453.
Based on the latest market data, the average asking price is about $4,045 with a median around $2,804.
The observed spread is roughly $27,816 across tracked listings, which is about 97.8% 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 $4,045. The median price is $2,804, 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 9 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 $27,816 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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