4.3 Carat Cushion Lab Grown Diamond Prices Comparison
As of May 2026, 4.3 carat cushion lab grown diamonds usually range from $724 to $44,413, with an average price of $5,438.In the last month, prices for these diamonds are down 9.6%.Compare 122 verified listings across 6 retailers tracked by CaratRadar.
4.3 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 122 verified 4.3-carat cushion lab grown diamonds listed across 6 online retailers. Prices in this segment range from $724 to $44,412, with an average asking price of $5,438 and a median of $4,030.
The price spread of $43,688 (98.4% 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.
122 diamonds tracked in this segment
Price range: $724 to $44,412
Average price: $5,438
Median price: $4,030
Available across 6 retailers
Savings potential: up to 98.4%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
122
$724
$5,438
$4,030
$44,413
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 63.4%IGI | 4.34ct | Cushion | G | VS1 | Ideal
From $793
Compare at $2,164
Save 70.9%IGI | 4.32ct | Cushion | G | SI1 | Ideal
From $807
Compare at $2,770
Save 62.8%IGI | 4.3ct | Cushion | F | VS1 | Ideal
From $814
Compare at $2,188
Save 61.9%IGI | 4.31ct | Cushion | F | VVS2 | Very Good
From $906
Compare at $2,376
Save 62.7%IGI | 4.4ct | Cushion | F | VVS2 | Very Good
From $913
Compare at $2,447
Save 68.2%IGI | 4.37ct | Cushion | F | VVS2 | Ideal
From $927
Compare at $2,913
Save 57.7%IGI | 4.32ct | Cushion | G | VVS2 | Very Good
From $984
Compare at $2,324
Save 69.7%IGI | 4.4ct | Cushion | E | VVS2 | Ideal
From $1,017
Compare at $3,352
Save 76.6%IGI | 4.37ct | Cushion | F | VS2 | Ideal
From $1,030
Compare at $4,400
Save 57.3%IGI | 4.35ct | Cushion | F | VVS2 | Very Good
From $1,040
Compare at $2,434
Save 60.2%IGI | 4.33ct | Cushion | E | VVS2 | Excellent
From $1,051
Compare at $2,641
Save 57.6%IGI | 4.34ct | Cushion | E | VS1 | Very Good
From $1,069
Compare at $2,520
Save 33.4%IGI | 4.38ct | Cushion | E | VS1 | Very Good
From $1,075
Compare at $1,614
Save 55.6%IGI | 4.37ct | Cushion | F | VVS2 | Very Good
From $1,097
Compare at $2,468
Save 19.4%IGI | 4.33ct | Cushion | E | VVS2 | Excellent
From $1,104
Compare at $1,370
Save 72.9%IGI | 4.38ct | Cushion | FANCY | VS1 | Very Good
From $1,105
Compare at $4,073
Save 72.9%IGI | 4.33ct | Cushion | FANCY | VVS2 | Very Good
From $1,140
Compare at $4,202
Save 57.1%IGI | 4.32ct | Cushion | E | VVS2 | Very Good
From $1,140
Compare at $2,656
Save 56%IGI | 4.3ct | Cushion | E | VVS2 | Very Good
From $1,161
Compare at $2,636
Save 56%IGI | 4.3ct | Cushion | E | VVS2 | Very Good
From $1,161
Compare at $2,636
Save 56.3%IGI | 4.34ct | Cushion | E | VVS2 | Very Good
From $1,171
Compare at $2,682
Save 56.3%IGI | 4.34ct | Cushion | E | VVS2 | Very Good
From $1,171
Compare at $2,682
Save 56.4%IGI | 4.35ct | Cushion | E | VVS2 | Very Good
From $1,174
Compare at $2,693
Save 56.6%IGI | 4.37ct | Cushion | E | VVS2 | Very Good
From $1,179
Compare at $2,717
Save 72.9%IGI | 4.31ct | Cushion | FANCY | VVS2 | Very Good
From $1,182
Compare at $4,357
Save 56.7%IGI | 4.38ct | Cushion | E | VVS2 | Very Good
From $1,182
Compare at $2,728
Save 56.8%IGI | 4.39ct | Cushion | E | VVS2 | Very Good
From $1,184
Compare at $2,740
Save 79.8%IGI | 4.35ct | Cushion | E | VVS2 | Ideal
From $1,229
Compare at $6,070
Save 51.8%IGI | 4.36ct | Cushion | E | VS1 | Very Good
From $1,249
Compare at $2,591
Save 61.8%IGI | 4.31ct | Cushion | D | VVS2 | Excellent
From $1,266
Compare at $3,317
Save 79.1%IGI | 4.33ct | Cushion | F | VVS2 | Ideal
From $1,273
Compare at $6,100
Save 46.8%IGI | 4.36ct | Cushion | F | VVS2 | Excellent
From $1,282
Compare at $2,410
Save 79.7%IGI | 4.31ct | Cushion | D | VS1 | Ideal
From $1,299
Compare at $6,410
Save 36.3%IGI | 4.36ct | Cushion | E | VS1 | Very Good
From $1,304
Compare at $2,048
Save 48.9%IGI | 4.35ct | Cushion | E | VS1 | Very Good
From $1,327
Compare at $2,598
Save 47.9%IGI | 4.3ct | Cushion | E | VS1 | Excellent
From $1,327
Compare at $2,546
Save 45.5%IGI | 4.35ct | Cushion | F | VVS2 | Very Good
From $1,335
Compare at $2,449
Save 46.7%IGI | 4.33ct | Cushion | E | VS1 | Very Good
From $1,340
Compare at $2,515
Save 72.9%IGI | 4.32ct | Cushion | FANCY | VS1 | Very Good
From $1,375
Compare at $5,065
Save 31.3%IGI | 4.32ct | Cushion | E | VS1 | Very Good
From $1,394
Compare at $2,029
Save 72.9%IGI | 4.38ct | Cushion | FANCY | VS1 | Very Good
From $1,413
Compare at $5,206
Save 72.7%IGI | 4.33ct | Cushion | FANCY | VS1 | Excellent
From $1,425
Compare at $5,217
Save 24.2%IGI | 4.36ct | Cushion | E | VVS1 | Excellent
From $1,425
Compare at $1,881
Save 57.8%IGI | 4.32ct | Cushion | D | VVS2 | Very Good
From $1,443
Compare at $3,417
Save 58.1%IGI | 4.36ct | Cushion | D | VVS2 | Very Good
From $1,456
Compare at $3,476
Save 58.1%IGI | 4.36ct | Cushion | D | VVS2 | Very Good
From $1,456
Compare at $3,476
Save 58.2%IGI | 4.37ct | Cushion | D | VVS2 | Very Good
From $1,459
Compare at $3,491
Save 63.9%IGI | 4.3ct | Cushion | E | VVS2 | Very Good
From $1,462
Compare at $4,055
Save 58.3%IGI | 4.38ct | Cushion | D | VVS2 | Very Good
From $1,463
Compare at $3,506
Save 58.3%IGI | 4.38ct | Cushion | D | VVS2 | Very Good
From $1,463
Compare at $3,506
Entry pricing in this category starts around $724.
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 $43,688 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 $4,030 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 122 comparable stones in this segment. Prices start around $724 and go up to $44,412.
Based on the latest market data, the average asking price is about $5,438 with a median around $4,030.
The observed spread is roughly $43,688 across tracked listings, which is about 98.4% 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 $5,438. The median price is $4,030, 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 6 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 $43,688 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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