4.3 Carat Round Lab Grown Diamond Prices Comparison
As of February 2026, 4.3 carat round lab grown diamonds usually range from $663 to $37,900, with an average price of $3,245.In the last month, prices for these diamonds are down 4.7%.Compare 595 verified listings across 11 retailers tracked by CaratRadar.
4.3 Carat Round Lab Grown Diamond Market Overview
CaratRadar currently tracks 595 verified 4.3-carat round lab grown diamonds listed across 11 online retailers. Prices in this segment range from $662 to $37,900, with an average asking price of $3,245 and a median of $1,695.
The price spread of $37,238 (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.
595 diamonds tracked in this segment
Price range: $662 to $37,900
Average price: $3,245
Median price: $1,695
Available across 11 retailers
Savings potential: up to 98.3%
Price Range Overview
As of Feb 27, 2026Real market range for this carat, shape, and diamond type.
595
$663
$3,245
$1,695
$37,900
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
GCALSave 71.5%4.25ct | Round | F | VVS2 | Ideal
From $3,006
Compare at $10,560
GIASave 82.2%4.25ct | Round | D | VVS1 | Excellent
From $4,463
Compare at $25,060
GIASave 82.2%4.25ct | Round | D | VVS1 | Excellent
From $4,463
Compare at $25,060
IGISave 84%4.25ct | Round | G | VVS2 | Ideal
From $1,212
Compare at $7,560
IGISave 77.8%4.25ct | Round | F | SI1 | Ideal
From $893
Compare at $4,030
IGISave 82.3%4.25ct | Round | E | IF | Ideal
From $5,419
Compare at $30,650
IGISave 76.3%4.25ct | Round | G | VS2 | Excellent
From $1,216
Compare at $5,130
IGISave 85.1%4.25ct | Round | G | VVS2 | Ideal
From $1,030
Compare at $6,920
IGISave 83.4%4.25ct | Round | G | VVS2 | Ideal
From $1,030
Compare at $6,200
IGISave 81.2%4.25ct | Round | F | VVS1 | Ideal
From $1,951
Compare at $10,360
IGISave 80.9%4.25ct | Round | F | VVS1 | Ideal
From $2,159
Compare at $11,330
IGISave 80.7%4.25ct | Round | G | VS1 | Ideal
From $1,076
Compare at $5,570
IGISave 82.9%4.25ct | Round | D | VS1 | Ideal
From $2,055
Compare at $12,040
IGISave 62.8%4.25ct | Round | FANCY | VVS2 | Ideal
From $3,718
Compare at $10,000
IGISave 85.7%4.25ct | Round | G | VS1 | Ideal
From $1,194
Compare at $8,350
IGISave 89.9%4.25ct | Round | E | VVS2 | Ideal
From $1,186
Compare at $11,740
IGISave 78.2%4.25ct | Round | D | IF | Ideal
From $5,666
Compare at $25,940
IGISave 66%4.25ct | Round | E | VVS2 | Ideal
From $1,278
Compare at $3,757
IGISave 83%4.25ct | Round | D | IF | Ideal
From $4,401
Compare at $25,940
IGISave 82.2%4.25ct | Round | E | VS1 | Excellent
From $1,232
Compare at $6,940
IGISave 56%4.25ct | Round | I | VS1 | Ideal
From $1,258
Compare at $2,860
IGISave 81.1%4.25ct | Round | F | VS2 | Ideal
From $1,009
Compare at $5,350
IGISave 78.4%4.25ct | Round | G | VS2 | Ideal
From $1,032
Compare at $4,770
IGISave 59.2%4.25ct | Round | E | VS1 | Excellent
From $1,560
Compare at $3,822
IGISave 83.1%4.25ct | Round | G | VVS2 | Excellent
From $969
Compare at $5,730
IGISave 58.8%4.25ct | Round | E | VVS2 | Excellent
From $1,634
Compare at $3,963
IGISave 82.6%4.25ct | Round | F | VS2 | Ideal
From $989
Compare at $5,680
IGISave 18.9%4.25ct | Round | G | VVS2 | Excellent
From $1,023
Compare at $1,261
GIASave 71.6%4.25ct | Round | D | VVS1 | Excellent
From $4,796
Compare at $16,860
GIASave 55.1%4.25ct | Round | D | VVS1 | Ideal
From $7,647
Compare at $17,040
IGISave 84.3%4.25ct | Round | G | VVS2 | Ideal
From $1,030
Compare at $6,560
IGISave 82%4.25ct | Round | D | VVS1 | Ideal
From $3,391
Compare at $18,790
IGISave 84.4%4.25ct | Round | E | SI1 | Excellent
From $976
Compare at $6,253
GIASave 71.6%4.25ct | Round | D | VVS1 | Excellent
From $4,796
Compare at $16,860
GIASave 69.4%4.25ct | Round | E | VS1 | Excellent
From $6,290
Compare at $20,560
GIASave 82.2%4.25ct | Round | D | VVS1 | Excellent
From $4,463
Compare at $25,060
GIASave 82.2%4.25ct | Round | D | VVS1 | Excellent
From $4,380
Compare at $24,570
GIASave 71.9%4.25ct | Round | D | VVS1 | Excellent
From $4,796
Compare at $17,090
IGISave 64.6%4.25ct | Round | F | VS2 | Ideal
From $1,144
Compare at $3,230
IGISave 84.9%4.25ct | Round | F | VS1 | Excellent
From $1,529
Compare at $10,100
IGISave 71.1%4.25ct | Round | F | SI1 | Ideal
From $1,025
Compare at $3,540
IGISave 87.2%4.25ct | Round | E | VS1 | Excellent
From $1,182
Compare at $9,212
IGISave 82.9%4.25ct | Round | D | IF | Ideal
From $5,381
Compare at $31,530
IGISave 83%4.25ct | Round | F | SI1 | Ideal
From $811
Compare at $4,770
IGISave 84.9%4.25ct | Round | E | VS1 | Excellent
From $1,563
Compare at $10,330
IGISave 78.2%4.25ct | Round | D | VS1 | Ideal
From $1,776
Compare at $8,160
IGISave 85%4.25ct | Round | E | VVS2 | Excellent
From $1,604
Compare at $10,660
IGISave 84.8%4.25ct | Round | E | VS2 | Excellent
From $1,495
Compare at $9,810
IGISave 89.5%4.25ct | Round | E | VVS2 | Excellent
From $1,242
Compare at $11,820
IGISave 59.3%4.25ct | Round | E | VS1 | Excellent
From $1,450
Compare at $3,558
Entry pricing in this category starts around $663.
What to Know When Shopping for 4.3 Carat Round Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $37,238 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 $1,695 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 595 comparable stones in this segment. Prices start around $662 and go up to $37,900.
Based on the latest market data, the average asking price is about $3,245 with a median around $1,695.
The observed spread is roughly $37,238 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 $1,695, 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 11 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 $37,238 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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