4.5 Carat Round Natural Diamond Prices Comparison
As of July 2026, 4.5 carat round natural diamonds usually range from $4,889 to $273,811, with an average price of $80,323.In the last month, prices for these diamonds are up 1%.Compare 83 verified listings across 10 retailers tracked by CaratRadar.
4.5 Carat Round Natural Diamond Market Overview
CaratRadar currently tracks 83 verified 4.5-carat round natural diamonds listed across 10 online retailers. Prices in this segment range from $4,889 to $273,811, with an average asking price of $80,323 and a median of $71,220.
The price spread of $268,922 (98.2% 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.
83 diamonds tracked in this segment
Price range: $4,889 to $273,811
Average price: $80,323
Median price: $71,220
Available across 10 retailers
Savings potential: up to 98.2%
Price Range Overview
As of Jul 13, 2026Real market range for this carat, shape, and diamond type.
83
$4,889
$80,323
$71,220
$273,811
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
IGI | 4.56ct | Round | K | SI1 | Excellent
From $26,558
Compare at $26,930
Save 16.3%IGI | 4.52ct | Round | K | VS2 | Excellent
From $30,770
Compare at $36,753
IGI | 4.51ct | Round | J | VS1 | Excellent
From $38,442
Compare at $38,445
GIA | 4.51ct | Round | K | SI1 | Excellent
From $39,649
Compare at $42,557
GIA | 4.5ct | Round | K | SI2 | Excellent
From $41,174
Compare at $45,738
Save 11.6%GIA | 4.51ct | Round | I | SI2 | Excellent
From $41,651
Compare at $47,118
IGI | 4.5ct | Round | I | SI1 | Ideal
From $41,670
GIA | 4.5ct | Round | K | SI2 | Excellent
From $42,865
Compare at $45,738
Save 15.6%IGI | 4.54ct | Round | J | VVS2 | Excellent
From $43,868
Compare at $51,967
GIA | 4.53ct | Round | J | SI2 | Ideal
From $45,071
Compare at $45,206
Save 15.7%GIA | 4.51ct | Round | K | SI1 | Excellent
From $45,258
Compare at $53,683
GIA | 4.56ct | Round | J | SI1 | Ideal
From $45,570
Compare at $48,566
Save 16.2%GIA | 4.52ct | Round | K | SI1 | Excellent
From $46,134
Compare at $55,072
IGI | 4.5ct | Round | H | SI1 | Ideal
From $46,906
Compare at $49,240
IGI | 4.5ct | Round | G | SI2 | Excellent
From $47,918
Compare at $48,453
Save 32.2%GIA | 4.51ct | Round | L | VVS1 | Excellent
From $48,051
Compare at $70,874
Save 34.9%GIA | 4.55ct | Round | J | SI1 | Excellent
From $48,288
Compare at $74,217
Save 13.5%IGI | 4.5ct | Round | I | IF | Excellent
From $48,368
Compare at $55,923
GIA | 4.5ct | Round | I | SI2 | Ideal
From $48,445
Compare at $50,022
Save 26.8%GIA | 4.5ct | Round | J | SI2 | Ideal
From $49,797
Compare at $67,999
GIA | 4.52ct | Round | H | SI2 | Excellent
From $50,143
Compare at $54,714
GIA | 4.56ct | Round | K | VS2 | Excellent
From $50,676
Compare at $53,626
GIA | 4.53ct | Round | J | SI1 | Excellent
From $53,027
Compare at $53,925
Save 35%GIA | 4.51ct | Round | J | SI2 | Excellent
From $53,458
Compare at $82,239
IGI | 4.56ct | Round | F | SI2 | Ideal
From $54,607
Compare at $56,820
GIA | 4.51ct | Round | J | SI1 | Excellent
From $55,491
Compare at $58,721
Save 11.7%GIA | 4.5ct | Round | I | SI2 | Excellent
From $56,411
Compare at $63,908
Save 30%GIA | 4.5ct | Round | J | VS1 | Ideal
From $58,380
Compare at $83,406
GIA | 4.53ct | Round | K | VS1 | Excellent
From $58,856
Compare at $62,011
GIA | 4.52ct | Round | J | VS2 | Excellent
From $58,936
Compare at $59,935
IGI | 4.56ct | Round | H | VS1 | Excellent
From $61,317
Compare at $61,320
GIA | 4.59ct | Round | J | VS1 | Excellent
From $61,597
Compare at $62,125
GIA | 4.5ct | Round | I | VS2 | Ideal
From $61,916
Compare at $62,446
IGI | 4.5ct | Round | I | VVS2 | Excellent
From $62,746
Compare at $62,750
Save 34.1%GIA | 4.5ct | Round | I | VS2 | Excellent
From $63,012
Compare at $95,616
IGI | 4.5ct | Round | H | VVS1 | Excellent
From $63,412
Compare at $63,415
Save 33.3%GIA | 4.5ct | Round | I | SI1 | Excellent
From $66,211
Compare at $99,259
GIA | 4.52ct | Round | I | SI1 | Excellent
From $67,089
Compare at $70,336
GIA | 4.52ct | Round | I | SI1 | Excellent
From $67,089
Compare at $70,336
Save 23%GIA | 4.5ct | Round | J | VS1 | Excellent
From $67,872
Compare at $88,126
GIA | 4.59ct | Round | I | VS2 | Excellent
From $70,320
Compare at $75,561
Save 11.7%GIA | 4.51ct | Round | F | SI2 | Excellent
From $70,478
Compare at $79,844
GIA | 4.55ct | Round | D | SI2 | Excellent
From $70,950
Compare at $75,506
GIA | 4.54ct | Round | E | SI2 | Ideal
From $72,592
Compare at $72,960
Save 29%GIA | 4.51ct | Round | J | VS1 | Excellent
From $73,110
Compare at $103,001
GIA | 4.55ct | Round | I | VS1 | Excellent
From $73,464
Compare at $74,092
GIA | 4.52ct | Round | H | SI1 | Excellent
From $74,355
Compare at $78,348
Save 32.9%GIA | 4.5ct | Round | I | VS1 | Excellent
From $75,513
Compare at $112,490
Save 13.3%GIA | 4.5ct | Round | H | VS2 | Excellent
From $76,272
Compare at $87,945
GIA | 4.51ct | Round | F | SI2 | Excellent
From $79,272
Compare at $83,109
Entry pricing in this category starts around $4,889.
What to Know When Shopping for 4.5 Carat Round Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $268,922 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 $71,220 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.
- Compare natural vs. lab-grown options for the same carat and shape. Lab-grown diamonds are chemically identical but often 30-50% less expensive.
- Check shipping, insurance, and return policies. The lowest sticker price is not always the best deal once you factor in total cost of purchase.
- Round brilliants command a premium due to higher rough waste during cutting. If budget matters, consider oval or cushion shapes for similar visual size.
Frequently Asked Questions
We currently track 83 comparable stones in this segment. Prices start around $4,889 and go up to $273,811.
Based on the latest market data, the average asking price is about $80,323 with a median around $71,220.
The observed spread is roughly $268,922 across tracked listings, which is about 98.2% 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 $80,323. The median price is $71,220, 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 $268,922 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 Natural inventory for 4.5 carat Round diamonds.