4.6 Carat Cushion Lab Grown Diamond Prices Comparison
As of February 2026, 4.6 carat cushion lab grown diamonds usually range from $974 to $38,810, with an average price of $2,874.In the last month, prices for these diamonds are down 3%.Compare 270 verified listings across 9 retailers tracked by CaratRadar.
4.6 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 270 verified 4.6-carat cushion lab grown diamonds listed across 9 online retailers. Prices in this segment range from $974 to $38,810, with an average asking price of $2,874 and a median of $1,805.
The price spread of $37,836 (97.5% 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.
270 diamonds tracked in this segment
Price range: $974 to $38,810
Average price: $2,874
Median price: $1,805
Available across 9 retailers
Savings potential: up to 97.5%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
270
$974
$2,874
$1,805
$38,810
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
GIASave 71.4%4.55ct | Cushion | E | VVS2 | Excellent
From $4,254
Compare at $14,870
GIASave 70.7%4.55ct | Cushion | D | VVS2 | Excellent
From $4,740
Compare at $16,170
GIASave 82.9%4.55ct | Cushion | D | VVS1 | Excellent
From $5,096
Compare at $29,800
IGISave 53.1%4.55ct | Cushion | D | VS1 | Very Good
From $1,501
Compare at $3,203
IGISave 87.8%4.55ct | Cushion | F | VVS2 | Excellent
From $1,209
Compare at $9,900
IGISave 52.2%4.55ct | Cushion | E | VS1 | Ideal
From $1,744
Compare at $3,648
IGISave 82.1%4.55ct | Cushion | F | VS1 | Excellent
From $1,080
Compare at $6,030
IGISave 78.2%4.55ct | Cushion | E | VS1 | Ideal
From $2,266
Compare at $10,410
IGISave 79.1%4.55ct | Cushion | E | VS1 | Excellent
From $2,244
Compare at $10,730
IGISave 70.8%4.55ct | Cushion | D | VVS2 | Ideal
From $1,605
Compare at $5,505
IGISave 61.8%4.55ct | Cushion | F | VS2 | Very Good
From $1,374
Compare at $3,592
IGISave 61.5%4.55ct | Cushion | D | VS2 | Fair
From $1,689
Compare at $4,391
IGISave 19.2%4.55ct | Cushion | F | VS1 | Ideal
From $1,126
Compare at $1,393
IGISave 49.9%4.55ct | Cushion | F | VVS2 | Very Good
From $1,473
Compare at $2,942
IGISave 34.8%4.55ct | Cushion | F | VVS2 | Very Good
From $2,112
Compare at $3,241
IGISave 77.1%4.55ct | Cushion | F | VS1 | Excellent
From $1,695
Compare at $7,417
IGISave 77.7%4.55ct | Cushion | D | VS1 | Excellent
From $2,372
Compare at $10,640
IGISave 61.7%4.55ct | Cushion | E | VS1 | Ideal
From $1,291
Compare at $3,374
IGISave 60%4.55ct | Cushion | D | VVS2 | Ideal
From $5,155
Compare at $12,880
IGISave 68%4.55ct | Cushion | FANCY | VS1 | Very Good
From $1,561
Compare at $4,873
IGISave 71.5%4.55ct | Cushion | D | VS1 | Ideal
From $2,523
Compare at $8,840
GIASave 65.9%4.55ct | Cushion | E | VVS2 | Good
From $4,516
Compare at $13,226
IGISave 58.9%4.55ct | Cushion | E | VVS2 | Very Good
From $1,771
Compare at $4,306
IGISave 82.7%4.55ct | Cushion | D | VS1 | Ideal
From $2,123
Compare at $12,300
IGISave 49.8%4.55ct | Cushion | F | VVS2 | Very Good
From $3,000
Compare at $5,972
IGISave 87.8%4.55ct | Cushion | F | VVS2 | Excellent
From $1,209
Compare at $9,900
IGISave 73.2%4.55ct | Cushion | E | VVS2 | Ideal
From $2,739
Compare at $10,220
IGISave 83%4.55ct | Cushion | D | VVS2 | Excellent
From $2,587
Compare at $15,180
IGISave 77.8%4.55ct | Cushion | F | VS1 | Very Good
From $2,405
Compare at $10,810
IGISave 66%4.55ct | Cushion | D | VVS2 | Very Good
From $1,872
Compare at $5,505
IGISave 81%4.55ct | Cushion | E | VVS2 | Very Good
From $1,790
Compare at $9,420
IGISave 84.3%4.55ct | Cushion | G | VVS2 | Ideal
From $1,163
Compare at $7,420
IGISave 82%4.55ct | Cushion | F | VVS2 | Ideal
From $1,785
Compare at $9,930
IGISave 87.7%4.55ct | Cushion | E | VS1 | Ideal
From $1,443
Compare at $11,700
IGISave 88.9%4.55ct | Cushion | E | VVS2 | Good
From $1,218
Compare at $11,000
IGISave 84.8%4.55ct | Cushion | E | VS1 | Very Good
From $1,774
Compare at $11,700
IGISave 84.6%4.55ct | Cushion | E | VS1 | Ideal
From $1,112
Compare at $7,210
IGISave 52.6%4.55ct | Cushion | E | VS1 | Very Good
From $1,413
Compare at $2,982
IGISave 52.6%4.55ct | Cushion | E | VS1 | Very Good
From $1,413
Compare at $2,982
IGISave 61.5%4.55ct | Cushion | E | VVS2 | Excellent
From $1,319
Compare at $3,427
IGISave 84.4%4.55ct | Cushion | E | VS1 | Fair
From $1,774
Compare at $11,410
IGISave 67.8%4.55ct | Cushion | E | VVS1 | Ideal
From $3,558
Compare at $11,058
IGISave 85.8%4.55ct | Cushion | E | VS1 | Ideal
From $1,527
Compare at $10,730
IGISave 55.4%4.55ct | Cushion | E | VVS2 | Very Good
From $1,500
Compare at $3,362
IGISave 77.7%4.55ct | Cushion | E | VS1 | Very Good
From $2,467
Compare at $11,060
IGISave 16.7%4.55ct | Cushion | E | VVS2 | Ideal
From $7,580
Compare at $9,100
IGISave 86.6%4.55ct | Cushion | E | VVS2 | Very Good
From $1,481
Compare at $11,030
IGISave 85.1%4.56ct | Cushion | G | VS2 | Ideal
From $1,236
Compare at $8,300
IGISave 87.4%4.56ct | Cushion | D | VS1 | Ideal
From $1,504
Compare at $11,910
IGISave 34.2%4.56ct | Cushion | F | VS1 | Very Good
From $1,933
Compare at $2,938
Entry pricing in this category starts around $974.
What to Know When Shopping for 4.6 Carat Cushion Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $37,836 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 $1,805 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 270 comparable stones in this segment. Prices start around $974 and go up to $38,810.
Based on the latest market data, the average asking price is about $2,874 with a median around $1,805.
The observed spread is roughly $37,836 across tracked listings, which is about 97.5% 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 $1,805, 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 $37,836 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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