4.3 Carat Cushion Lab Grown Diamond Prices Comparison
As of April 2026, 4.3 carat cushion lab grown diamonds usually range from $820 to $46,590, with an average price of $5,982.In the last month, prices for these diamonds are up 2%.Compare 183 verified listings across 9 retailers tracked by CaratRadar.
4.3 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 183 verified 4.3-carat cushion lab grown diamonds listed across 9 online retailers. Prices in this segment range from $820 to $46,590, with an average asking price of $5,982 and a median of $4,895.
The price spread of $45,770 (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.
183 diamonds tracked in this segment
Price range: $820 to $46,590
Average price: $5,982
Median price: $4,895
Available across 9 retailers
Savings potential: up to 98.2%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
183
$820
$5,982
$4,895
$46,590
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 77.7%GCAL | 4.3ct | Cushion | E | VVS2 | Ideal
From $2,120
Compare at $9,500
Save 10.1%GIA | 4.3ct | Cushion | D | FL | Ideal
From $32,990
Compare at $36,688
Save 62.1%GIA | 4.3ct | Cushion | G | VS2 | Very Good
From $2,692
Compare at $7,103
Save 10.1%GIA | 4.3ct | Cushion | D | FL | Ideal
From $32,990
Compare at $36,688
Save 60.7%GIA | 4.3ct | Cushion | D | VVS1 | Very Good
From $6,309
Compare at $16,059
Save 60.2%GIA | 4.3ct | Cushion | F | VVS2 | Good
From $4,115
Compare at $10,330
Save 74.8%GIA | 4.3ct | Cushion | D | IF | Excellent
From $14,750
Compare at $58,440
Save 25%GIA | 4.3ct | Cushion | D | VVS1 | Ideal
From $5,299
Compare at $7,063
Save 15.3%GIA | 4.3ct | Cushion | D | FL | Ideal
From $31,080
Compare at $36,688
Save 73.6%GIA | 4.3ct | Cushion | D | VVS1 | Excellent
From $6,309
Compare at $23,860
Save 77.1%IGI | 4.3ct | Cushion | F | VS1 | Ideal
From $2,153
Compare at $9,420
Save 74.4%IGI | 4.3ct | Cushion | D | VVS2 | Ideal
From $2,182
Compare at $8,510
Save 77.2%IGI | 4.3ct | Cushion | E | VS1 | Excellent
From $2,020
Compare at $8,840
Save 71.9%IGI | 4.3ct | Cushion | D | VVS2 | Very Good
From $3,352
Compare at $11,910
Save 72.8%IGI | 4.3ct | Cushion | E | VVS1 | Ideal
From $5,000
Compare at $18,350
Save 72.8%IGI | 4.3ct | Cushion | E | VVS1 | Ideal
From $4,861
Compare at $17,840
IGI | 4.3ct | Cushion | E | VVS1 | Ideal
From $2,610
Compare at $2,610
Save 79.5%IGI | 4.3ct | Cushion | F | VS1 | Ideal
From $1,744
Compare at $8,520
Save 60.4%IGI | 4.3ct | Cushion | D | VVS1 | Good
From $6,042
Compare at $15,266
Save 60.4%IGI | 4.3ct | Cushion | D | VVS1 | Very Good
From $6,042
Compare at $15,266
Save 74.2%IGI | 4.3ct | Cushion | E | VVS2 | Very Good
From $1,546
Compare at $6,000
Save 78.5%IGI | 4.3ct | Cushion | D | VVS1 | Ideal
From $3,006
Compare at $13,990
Save 63.4%IGI | 4.3ct | Cushion | D | IF | Excellent
From $10,793
Compare at $29,455
Save 71.5%IGI | 4.3ct | Cushion | D | VVS2 | Very Good
From $2,611
Compare at $9,150
Save 72.4%IGI | 4.3ct | Cushion | D | VVS2 | Very Good
From $3,352
Compare at $12,140
Save 41.7%IGI | 4.3ct | Cushion | E | VVS2 | Very Good
From $1,843
Compare at $3,161
Save 68.9%IGI | 4.3ct | Cushion | E | VVS2 | Very Good
From $2,141
Compare at $6,880
Save 73.1%IGI | 4.3ct | Cushion | D | FL | Excellent
From $12,230
Compare at $45,520
IGI | 4.3ct | Cushion | D | FL | Excellent
From $28,750
Compare at $31,482
Save 41.7%IGI | 4.3ct | Cushion | E | VVS2 | Very Good
From $1,843
Compare at $3,161
Save 72.9%GIA | 4.31ct | Cushion | E | VS1 | Excellent
From $4,722
Compare at $17,410
Save 74.6%GIA | 4.31ct | Cushion | D | IF | Excellent
From $14,108
Compare at $55,570
GIA | 4.31ct | Cushion | G | VVS2 | Ideal
From $3,674
Compare at $3,675
Save 56.7%GIA | 4.31ct | Cushion | F | VS1 | Ideal
From $5,260
Compare at $12,150
Save 60.7%GIA | 4.31ct | Cushion | D | VVS1 | Excellent
From $6,324
Compare at $16,097
Save 64.3%GIA | 4.31ct | Cushion | E | VVS1 | Excellent
From $5,540
Compare at $15,527
Save 78.2%GIA | 4.31ct | Cushion | G | VS2 | Ideal
From $2,184
Compare at $10,010
IGI | 4.31ct | Cushion | H | VS1 | Ideal
From $1,689
Compare at $1,690
Save 86.7%IGI | 4.31ct | Cushion | F | VVS2 | Excellent
From $1,115
Compare at $8,415
IGI | 4.31ct | Cushion | E | VVS2 | Excellent
From $8,491
Compare at $8,610
Save 75.6%IGI | 4.31ct | Cushion | H | VVS2 | Ideal
From $1,645
Compare at $6,730
Save 64.2%IGI | 4.31ct | Cushion | D | FL | Very Good
From $16,977
Compare at $47,410
Save 72.4%IGI | 4.31ct | Cushion | E | VVS1 | Very Good
From $3,881
Compare at $14,040
Save 69.2%IGI | 4.31ct | Cushion | F | VVS1 | Very Good
From $3,762
Compare at $12,230
Save 75.2%IGI | 4.31ct | Cushion | D | VVS2 | Very Good
From $2,617
Compare at $10,570
Save 77.3%IGI | 4.31ct | Cushion | D | VS1 | Ideal
From $1,847
Compare at $8,130
Save 75.5%IGI | 4.31ct | Cushion | F | VVS2 | Very Good
From $1,486
Compare at $6,060
Save 65.5%GIA | 4.32ct | Cushion | D | IF | Very Good
From $14,778
Compare at $42,818
Save 57.6%GIA | 4.32ct | Cushion | D | VS1 | Excellent
From $6,058
Compare at $14,290
Save 74.8%GIA | 4.32ct | Cushion | D | VVS1 | Excellent
From $6,195
Compare at $24,600
Entry pricing in this category starts around $820.
What to Know When Shopping for 4.3 Carat Cushion Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $45,770 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 $4,895 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.
- Cushion cuts come in standard and modified brilliant varieties. Modified brilliants tend to show more fire, while standard cushions have broader facets.
Frequently Asked Questions
We currently track 183 comparable stones in this segment. Prices start around $820 and go up to $46,590.
Based on the latest market data, the average asking price is about $5,982 with a median around $4,895.
The observed spread is roughly $45,770 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 our data, the median price is $4,895, 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 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 $45,770 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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