4.5 Carat Round Lab Grown Diamond Prices Comparison
As of April 2026, 4.5 carat round lab grown diamonds usually range from $500 to $30,010, with an average price of $3,725.In the last month, prices for these diamonds are down 2.1%.Compare 2,513 verified listings across 10 retailers tracked by CaratRadar.
4.5 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 2,513 verified 4.5-carat round lab grown diamonds listed across 10 online retailers. Prices in this segment range from $500 to $30,010, with an average asking price of $3,724 and a median of $2,711.
The price spread of $29,510 (98.3% 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.
2,513 diamonds tracked in this segment
Price range: $500 to $30,010
Average price: $3,724
Median price: $2,711
Available across 10 retailers
Savings potential: up to 98.3%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
2,513
$500
$3,725
$2,711
$30,010
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 73%GCAL | 4.5ct | Round | D | VVS2 | Ideal
From $5,097
Compare at $18,910
Save 66.6%GIA | 4.5ct | Round | H | VS1 | Excellent
From $4,770
Compare at $14,270
Save 69.6%GIA | 4.5ct | Round | E | VVS1 | Ideal
From $6,978
Compare at $22,950
Save 62.9%GIA | 4.5ct | Round | D | VVS1 | Excellent
From $7,083
Compare at $19,085
Save 28.7%GIA | 4.5ct | Round | G | VS2 | Ideal
From $7,820
Compare at $10,970
Save 68.1%GIA | 4.5ct | Round | D | VVS1 | Excellent
From $9,105
Compare at $28,560
Save 77.3%GIA | 4.5ct | Round | D | VVS1 | Excellent
From $6,035
Compare at $26,570
Save 74.9%GIA | 4.5ct | Round | D | VVS1 | Excellent
From $8,243
Compare at $32,810
Save 74.5%GIA | 4.5ct | Round | D | VS1 | Excellent
From $4,850
Compare at $19,030
Save 62.9%GIA | 4.5ct | Round | D | VVS1 | Excellent
From $7,083
Compare at $19,085
Save 49.8%GIA | 4.5ct | Round | E | VS1 | Excellent
From $3,413
Compare at $6,801
Save 45.7%GIA | 4.5ct | Round | D | IF | Excellent
From $16,206
Compare at $29,857
Save 69.9%GIA | 4.5ct | Round | E | VS1 | Excellent
From $4,665
Compare at $15,480
Save 75.8%GIA | 4.5ct | Round | D | VVS1 | Excellent
From $6,801
Compare at $28,100
Save 56.3%GIA | 4.5ct | Round | D | FL | Excellent
From $15,256
Compare at $34,920
Save 58.5%GIA | 4.5ct | Round | E | VVS2 | Excellent
From $7,920
Compare at $19,100
Save 68.1%GIA | 4.5ct | Round | D | VVS1 | Excellent
From $9,105
Compare at $28,560
GIA | 4.5ct | Round | D | FL | Ideal
From $38,640
Compare at $40,314
Save 69.6%GIA | 4.5ct | Round | D | IF | Excellent
From $14,018
Compare at $46,180
Save 75.8%GIA | 4.5ct | Round | D | VVS2 | Excellent
From $5,320
Compare at $21,990
Save 71.8%GIA | 4.5ct | Round | D | IF | Excellent
From $14,025
Compare at $49,680
Save 73.5%GIA | 4.5ct | Round | E | VVS2 | Excellent
From $4,286
Compare at $16,190
Save 66.7%IGI | 4.5ct | Round | F | VS1 | Excellent
From $1,285
Compare at $3,856
Save 84.6%IGI | 4.5ct | Round | H | VS1 | Ideal
From $1,130
Compare at $7,320
Save 40.5%IGI | 4.5ct | Round | H | VS2 | Ideal
From $1,582
Compare at $2,658
Save 40.5%IGI | 4.5ct | Round | H | VS2 | Ideal
From $1,582
Compare at $2,658
Save 40.5%IGI | 4.5ct | Round | H | VS2 | Ideal
From $1,582
Compare at $2,658
Save 84.5%IGI | 4.5ct | Round | G | VS1 | Ideal
From $1,456
Compare at $9,370
Save 70.4%IGI | 4.5ct | Round | H | VS1 | Ideal
From $2,170
Compare at $7,320
Save 76.7%IGI | 4.5ct | Round | G | VS1 | Ideal
From $1,793
Compare at $7,700
Save 76.7%IGI | 4.5ct | Round | G | VS2 | Ideal
From $1,734
Compare at $7,450
Save 39.9%IGI | 4.5ct | Round | H | VS1 | Ideal
From $1,759
Compare at $2,929
Save 70.4%IGI | 4.5ct | Round | H | VS1 | Ideal
From $2,170
Compare at $7,320
Save 74.6%IGI | 4.5ct | Round | I | VS1 | Ideal
From $1,780
Compare at $7,010
Save 48.1%IGI | 4.5ct | Round | I | VS1 | Ideal
From $3,740
Compare at $7,210
Save 39.9%IGI | 4.5ct | Round | H | VS1 | Ideal
From $1,759
Compare at $2,929
Save 84.7%IGI | 4.5ct | Round | G | VS1 | Ideal
From $1,180
Compare at $7,700
Save 40.5%IGI | 4.5ct | Round | H | VS2 | Ideal
From $1,582
Compare at $2,658
Save 56%IGI | 4.5ct | Round | G | VS2 | Ideal
From $1,287
Compare at $2,929
Save 84.5%IGI | 4.5ct | Round | G | VS1 | Ideal
From $1,456
Compare at $9,400
Save 75.1%IGI | 4.5ct | Round | G | VS2 | Ideal
From $1,250
Compare at $5,030
Save 76.2%IGI | 4.5ct | Round | E | IF | Ideal
From $9,502
Compare at $39,970
Save 69.8%IGI | 4.5ct | Round | F | VVS2 | Excellent
From $2,864
Compare at $9,490
Save 75.8%IGI | 4.5ct | Round | D | VS1 | Ideal
From $3,161
Compare at $13,070
Save 76.3%IGI | 4.5ct | Round | G | VS2 | Excellent
From $1,207
Compare at $5,090
Save 84.2%IGI | 4.5ct | Round | G | VS1 | Ideal
From $1,414
Compare at $8,930
Save 67.4%IGI | 4.5ct | Round | F | VVS2 | Excellent
From $925
Compare at $2,836
Save 76.3%IGI | 4.5ct | Round | G | VVS2 | Ideal
From $1,220
Compare at $5,140
Save 58.2%IGI | 4.5ct | Round | H | VS1 | Ideal
From $1,748
Compare at $4,180
Save 82.8%IGI | 4.5ct | Round | G | VS1 | Ideal
From $1,269
Compare at $7,360
Entry pricing in this category starts around $500.
What to Know When Shopping for 4.5 Carat Round Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $29,510 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 $2,711 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.
- 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 2,513 comparable stones in this segment. Prices start around $500 and go up to $30,010.
Based on the latest market data, the average asking price is about $3,724 with a median around $2,711.
The observed spread is roughly $29,510 across tracked listings, which is about 98.3% from highest to lowest offer in this bucket.
We refresh pricing data daily so these pages stay current with market changes.
Based on our data, the median price is $2,711, which represents the midpoint of the market. Anything below this figure from a reputable retailer is a solid deal.
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 $29,510 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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