4.1 Carat Cushion Lab Grown Diamond Prices Comparison
As of May 2026, 4.1 carat cushion lab grown diamonds usually range from $144 to $27,350, with an average price of $3,596.In the last month, prices for these diamonds are down 5%.Compare 259 verified listings across 8 retailers tracked by CaratRadar.
4.1 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 259 verified 4.1-carat cushion lab grown diamonds listed across 8 online retailers. Prices in this segment range from $144 to $27,350, with an average asking price of $3,596 and a median of $2,368.
The price spread of $27,206 (99.5% 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.
259 diamonds tracked in this segment
Price range: $144 to $27,350
Average price: $3,596
Median price: $2,368
Available across 8 retailers
Savings potential: up to 99.5%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
259
$144
$3,596
$2,368
$27,350
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 58.3%IGI | 4.18ct | Cushion | I | VS1 | Ideal
From $775
Compare at $1,857
Save 61.3%IGI | 4.16ct | Cushion | E | VS2 | Ideal
From $788
Compare at $2,038
Save 70%IGI | 4.15ct | Cushion | H | VS1 | Ideal
From $790
Compare at $2,637
Save 76.3%IGI | 4.2ct | Cushion | H | VS1 | Very Good
From $816
Compare at $3,450
Save 75.8%IGI | 4.19ct | Cushion | E | VS1 | Ideal
From $819
Compare at $3,390
Save 60.3%IGI | 4.12ct | Cushion | G | VVS2 | Very Good
From $825
Compare at $2,080
IGI | 4.1ct | Cushion | H | VS2 | Ideal
From $830
Compare at $3,700
Save 79.9%IGI | 4.11ct | Cushion | I | VS1 | Very Good
From $848
Compare at $4,220
Save 57.4%IGI | 4.12ct | Cushion | G | VS1 | Good
From $863
Compare at $2,025
Save 71.5%IGI | 4.1ct | Cushion | E | VS1 | Very Good
From $880
Compare at $3,093
Save 77.2%IGI | 4.1ct | Cushion | F | VS1 | Ideal
From $883
Compare at $3,876
Save 57.6%IGI | 4.18ct | Cushion | F | VS1 | Ideal
From $887
Compare at $2,094
Save 64.6%IGI | 4.17ct | Cushion | J | VS1 | Ideal
From $893
Compare at $2,520
IGI | 4.1ct | Cushion | E | VVS2 | Ideal
From $899
Compare at $3,124
Save 41.7%IGI | 4.11ct | Cushion | G | VS1 | Very Good
From $909
Compare at $1,560
Save 47.9%IGI | 4.14ct | Cushion | E | SI1 | Ideal
From $911
Compare at $1,750
Save 72.4%IGI | 4.11ct | Cushion | FANCY | VS1 | Very Good
From $918
Compare at $3,324
Save 59.2%IGI | 4.15ct | Cushion | E | VS1 | Excellent
From $936
Compare at $2,295
Save 60.7%IGI | 4.1ct | Cushion | E | VVS2 | Excellent
From $938
Compare at $2,384
Save 60.5%IGI | 4.1ct | Cushion | E | VVS2 | Excellent
From $938
Compare at $2,374
Save 13.9%IGI | 4.12ct | Cushion | I | VS1 | Ideal
From $939
Compare at $1,090
Save 13.9%IGI | 4.12ct | Cushion | H | VS1 | Very Good
From $948
Compare at $1,101
Save 79.9%IGI | 4.12ct | Cushion | J | VVS2 | Excellent
From $951
Compare at $4,730
Save 59.3%IGI | 4.1ct | Cushion | E | VVS2 | Very Good
From $966
Compare at $2,371
Save 59.5%IGI | 4.2ct | Cushion | E | VS1 | Ideal
From $980
Compare at $2,422
Save 76.6%IGI | 4.14ct | Cushion | D | VS1 | Ideal
From $986
Compare at $4,220
Save 76.6%IGI | 4.18ct | Cushion | D | VS1 | Ideal
From $995
Compare at $4,260
Save 57.9%IGI | 4.11ct | Cushion | E | VVS2 | Very Good
From $1,011
Compare at $2,400
Save 72.7%IGI | 4.1ct | Cushion | E | VVS2 | Ideal
From $1,012
Compare at $3,712
Save 55.3%IGI | 4.1ct | Cushion | E | VS1 | Excellent
From $1,012
Compare at $2,264
Save 40.4%IGI | 4.1ct | Cushion | F | VVS2 | Ideal
From $1,014
Compare at $1,701
Save 72.4%IGI | 4.18ct | Cushion | FANCY | VS1 | Very Good
From $1,027
Compare at $3,718
Save 13.4%IGI | 4.18ct | Cushion | E | VS1 | Very Good
From $1,036
Compare at $1,196
Save 56.3%IGI | 4.2ct | Cushion | E | VS1 | Very Good
From $1,036
Compare at $2,369
Save 13.3%IGI | 4.19ct | Cushion | E | VS1 | Very Good
From $1,039
Compare at $1,199
Save 38.9%IGI | 4.1ct | Cushion | F | VVS2 | Excellent
From $1,039
Compare at $1,701
Save 13.3%IGI | 4.19ct | Cushion | E | VS1 | Very Good
From $1,039
Compare at $1,199
Save 56.3%IGI | 4.1ct | Cushion | E | VVS2 | Excellent
From $1,048
Compare at $2,396
Save 56.3%IGI | 4.1ct | Cushion | E | VVS2 | Excellent
From $1,048
Compare at $2,396
Save 56.3%IGI | 4.1ct | Cushion | E | VVS2 | Excellent
From $1,048
Compare at $2,396
Save 56.3%IGI | 4.1ct | Cushion | E | VVS2 | Excellent
From $1,048
Compare at $2,396
Save 56.3%IGI | 4.1ct | Cushion | E | VVS2 | Excellent
From $1,048
Compare at $2,396
Save 53.7%IGI | 4.18ct | Cushion | F | VVS2 | Very Good
From $1,051
Compare at $2,271
Save 57.7%IGI | 4.19ct | Cushion | E | VVS2 | Very Good
From $1,055
Compare at $2,492
Save 53.9%IGI | 4.2ct | Cushion | F | VVS2 | Very Good
From $1,056
Compare at $2,292
Save 55%IGI | 4.17ct | Cushion | E | VS1 | Ideal
From $1,059
Compare at $2,351
Save 52%IGI | 4.12ct | Cushion | F | VVS2 | Very Good
From $1,062
Compare at $2,211
Save 54.6%IGI | 4.17ct | Cushion | E | VS1 | Very Good
From $1,064
Compare at $2,346
Save 52.2%IGI | 4.14ct | Cushion | F | VVS2 | Very Good
From $1,067
Compare at $2,231
Save 55.3%IGI | 4.1ct | Cushion | E | VVS2 | Very Good
From $1,074
Compare at $2,403
Entry pricing in this category starts around $144.
What to Know When Shopping for 4.1 Carat Cushion Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $27,206 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 $2,368 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 259 comparable stones in this segment. Prices start around $144 and go up to $27,350.
Based on the latest market data, the average asking price is about $3,596 with a median around $2,368.
The observed spread is roughly $27,206 across tracked listings, which is about 99.5% 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 $3,596. The median price is $2,368, 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 8 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 $27,206 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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