4.5 Carat Round Natural Diamond Prices Comparison
As of October 2026, 4.5 carat round natural diamonds in the 4.50–4.99 carat benchmark range usually range from $2,582 to $605,525, with an average price of $83,618.In the last month, prices for these diamonds are down 0.5%.Compare 230 verified listings across 10 retailers tracked by CaratRadar.
4.5 Carat Round Natural Diamond Market Overview
CaratRadar currently tracks 230 verified 4.5-carat round natural diamonds in the 4.50–4.99 carat benchmark range, listed across 10 online retailers. Prices in this segment range from $2,582 to $605,525, with an average asking price of $83,618 and a median of $75,129.
The price spread of $602,943 (99.6% 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.
230 diamonds tracked in the 4.50–4.99 carat benchmark
Price range: $2,582 to $605,525
Average price: $83,618
Median price: $75,129
Available across 10 retailers
Savings potential: up to 99.6%
Price Range Overview
As of Oct 12, 2026Real market range for this carat, shape, and diamond type.
230
$2,582
$83,618
$75,129
$605,525
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 13%IGI | 4.53ct | Round | F | I1 | Good
From $13,355
Compare at $15,347
Save 18.3%IGI | 4.52ct | Round | K | SI2 | Excellent
From $20,210
Compare at $24,731
IGI | 4.51ct | Round | K | VS2 | Ideal
From $25,850
Compare at $28,652
Save 13.2%IGI | 4.56ct | Round | K | SI1 | Excellent
From $26,558
Compare at $30,611
Save 10.4%GIA | 4.51ct | Round | L | VS1 | Excellent
From $29,607
Compare at $33,057
Save 14.5%GIA | 4.5ct | Round | L | VS1 | Excellent
From $29,860
Compare at $34,908
IGI | 4.51ct | Round | K | VS1 | Excellent
From $30,366
Compare at $33,682
IGI | 4.52ct | Round | K | VS2 | Excellent
From $30,770
Compare at $34,130
Save 19.1%GIA | 4.51ct | Round | K | SI1 | Excellent
From $31,745
Compare at $39,237
IGI | 4.7ct | Round | J | SI1 | Excellent
From $32,235
Compare at $35,363
IGI | 4.67ct | Round | K | VS2 | Excellent
From $33,405
Compare at $36,651
IGI | 4.52ct | Round | J | VS2 | Ideal
From $34,467
Compare at $37,820
Save 10.9%GIA | 4.5ct | Round | L | SI2 | Excellent
From $34,734
Compare at $39,003
GIA | 4.7ct | Round | L | SI2 | Excellent
From $36,058
Compare at $36,078
IGI | 4.71ct | Round | H | SI2 | Excellent
From $36,948
Compare at $37,476
Save 23.3%GIA | 4.5ct | Round | K | SI2 | Excellent
From $37,119
Compare at $48,424
IGI | 4.51ct | Round | J | VS1 | Excellent
From $38,415
Compare at $42,168
IGI | 4.57ct | Round | K | VS1 | Excellent
From $38,425
Compare at $39,859
Save 16.2%GIA | 4.67ct | Round | L | VS1 | Very Good
From $38,862
Compare at $46,394
HRD | 4.51ct | Round | J | VS2 | Ideal
From $39,111
Compare at $39,758
Save 13.2%GIA | 4.56ct | Round | J | SI1 | Ideal
From $39,610
Compare at $45,610
HRD | 4.54ct | Round | I | VVS2 | Very Good
From $39,908
Compare at $43,684
GIA | 4.51ct | Round | L | VVS2 | Excellent
From $39,963
Compare at $43,413
Save 26.8%GIA | 4.63ct | Round | J | SI2 | Ideal
From $40,009
Compare at $54,634
GIA | 4.52ct | Round | K | SI1 | Excellent
From $40,414
Compare at $43,903
IGI | 4.5ct | Round | J | VS1 | Ideal
From $41,110
Compare at $50,059
Save 16.6%GIA | 4.6ct | Round | K | SI2 | Excellent
From $42,116
Compare at $50,522
Save 23.5%GIA | 4.51ct | Round | K | SI1 | Excellent
From $42,135
Compare at $55,070
IGI | 4.51ct | Round | J | VVS1 | Excellent
From $42,244
Compare at $46,601
Save 16.6%GIA | 4.51ct | Round | J | SI2 | Excellent
From $42,505
Compare at $50,990
Save 16.6%GIA | 4.51ct | Round | L | VVS1 | Excellent
From $42,505
Compare at $50,990
Save 17.3%HRD | 4.51ct | Round | J | VVS1 | Very Good
From $42,505
Compare at $51,380
Save 16.9%IGI | 4.54ct | Round | J | VVS2 | Excellent
From $42,776
Compare at $51,471
Save 20.3%GIA | 4.5ct | Round | K | SI2 | Excellent
From $42,865
Compare at $53,797
Save 16.6%GIA | 4.86ct | Round | K | SI1 | Very Good
From $43,944
Compare at $52,721
Save 17.2%IGI | 4.64ct | Round | J | VS1 | Excellent
From $44,129
Compare at $53,294
GIA | 4.5ct | Round | J | SI2 | Excellent
From $44,210
Compare at $48,040
Save 16.6%GIA | 4.7ct | Round | J | SI2 | Excellent
From $44,289
Compare at $53,135
IGI | 4.5ct | Round | G | SI2 | Excellent
From $44,901
Compare at $45,391
GIA | 4.53ct | Round | J | SI2 | Ideal
From $45,071
Compare at $45,206
Save 10.7%GIA | 4.5ct | Round | J | VS1 | Excellent
From $45,250
Compare at $50,652
Save 16.7%GIA | 4.52ct | Round | K | SI1 | Excellent
From $46,134
Compare at $55,356
IGI | 4.83ct | Round | J | VS2 | Excellent
From $46,677
Compare at $51,504
Save 16.7%GIA | 4.51ct | Round | K | SI1 | Excellent
From $47,293
Compare at $56,749
Save 26.5%GIA | 4.69ct | Round | J | SI2 | Excellent
From $48,055
Compare at $65,398
Save 26.5%GIA | 4.51ct | Round | I | SI2 | Excellent
From $48,056
Compare at $65,360
GIA | 4.6ct | Round | J | SI2 | Excellent
From $48,091
Compare at $52,550
GIA | 4.5ct | Round | K | VS2 | Excellent
From $48,693
Compare at $49,184
Save 26.8%GIA | 4.5ct | Round | J | SI2 | Ideal
From $48,958
Compare at $66,855
GIA | 4.5ct | Round | I | SI2 | Excellent
From $49,922
Compare at $54,264
Entry pricing in this benchmark range starts around $2,582.
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 $602,943 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 $75,129 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 230 comparable stones in the 4.50–4.99 carat benchmark range. Prices start around $2,582 and go up to $605,525.
Based on the latest market data, the average asking price is about $83,618 with a median around $75,129.
The observed spread is roughly $602,943 across tracked listings, which is about 99.6% 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 $83,618. The median price is $75,129, 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 $602,943 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 Carat Round Natural Diamond Prices
4.5 Carat Emerald Natural Diamond Prices
4.5 Carat Oval Natural Diamond Prices
4.5 Carat Radiant Natural Diamond Prices
4.5 Carat Cushion Natural Diamond Prices
4.5 Carat Pear Natural Diamond Prices
4.5 Carat Heart Natural Diamond Prices
4.5 Carat Asscher Natural Diamond Prices
4.5 Carat Marquise Natural Diamond Prices
4.5 Carat Princess Natural Diamond Prices
Tracking Natural inventory for the 4.50–4.99 carat Round diamond benchmark.