3.4 Carat Cushion Lab Grown Diamond Prices Comparison
As of February 2026, 3.4 carat cushion lab grown diamonds usually range from $699 to $23,540, with an average price of $2,884.In the last month, prices for these diamonds are down 3.9%.Compare 258 verified listings across 11 retailers tracked by CaratRadar.
3.4 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 258 verified 3.4-carat cushion lab grown diamonds listed across 11 online retailers. Prices in this segment range from $699 to $23,540, with an average asking price of $2,884 and a median of $1,829.
The price spread of $22,841 (97.0% 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.
258 diamonds tracked in this segment
Price range: $699 to $23,540
Average price: $2,884
Median price: $1,829
Available across 11 retailers
Savings potential: up to 97.0%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
258
$699
$2,884
$1,829
$23,540
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
IGISave 51.9%3.36ct | Cushion | H | VS1 | Ideal
From $10,870
Compare at $22,578
IGISave 57.5%3.36ct | Cushion | H | VS1 | Ideal
From $1,244
Compare at $2,930
GIASave 71.7%3.36ct | Cushion | D | VVS2 | Ideal
From $2,746
Compare at $9,700
IGISave 65%3.36ct | Cushion | D | VVS1 | Excellent
From $2,696
Compare at $7,706
IGISave 21.2%3.36ct | Cushion | F | VVS1 | Very Good
From $1,505
Compare at $1,911
IGISave 19.4%3.36ct | Cushion | F | VVS2 | Very Good
From $1,319
Compare at $1,636
GIASave 43%3.36ct | Cushion | E | VVS2 | Excellent
From $2,469
Compare at $4,329
IGISave 83.6%3.36ct | Cushion | G | VS1 | Very Good
From $1,058
Compare at $6,450
IGISave 77.1%3.36ct | Cushion | D | VS1 | Ideal
From $1,403
Compare at $6,130
IGISave 80.9%3.36ct | Cushion | D | VVS1 | Excellent
From $1,879
Compare at $9,835
IGISave 48.9%3.36ct | Cushion | FANCY | VVS2 | Very Good
From $1,346
Compare at $2,635
IGISave 81.9%3.36ct | Cushion | D | IF | Ideal
From $3,709
Compare at $20,520
IGI3.36ct | Cushion | E | VS1 | Excellent
From $5,440
Compare at $5,947
IGISave 77.9%3.36ct | Cushion | D | VVS2 | Ideal
From $2,215
Compare at $10,040
IGISave 78.2%3.36ct | Cushion | D | VVS1 | Very Good
From $1,791
Compare at $8,230
IGISave 82.7%3.36ct | Cushion | E | VVS2 | Ideal
From $912
Compare at $5,280
IGISave 75.9%3.36ct | Cushion | FANCY | VS1 | Good
From $1,287
Compare at $5,337
IGISave 81.4%3.36ct | Cushion | D | VVS1 | Ideal
From $2,186
Compare at $11,730
IGISave 81.1%3.36ct | Cushion | D | VVS1 | Ideal
From $2,216
Compare at $11,730
GIASave 80.2%3.36ct | Cushion | D | VVS1 | Excellent
From $2,147
Compare at $10,830
IGISave 83.4%3.36ct | Cushion | F | SI1 | Ideal
From $888
Compare at $5,360
IGISave 83.5%3.36ct | Cushion | G | VS2 | Very Good
From $1,020
Compare at $6,190
IGISave 79.5%3.36ct | Cushion | H | VVS2 | Excellent
From $906
Compare at $4,430
IGISave 74.1%3.36ct | Cushion | E | VVS2 | Ideal
From $1,976
Compare at $7,640
IGISave 80.6%3.36ct | Cushion | E | VVS2 | Ideal
From $1,451
Compare at $7,490
IGISave 20.8%3.36ct | Cushion | E | VVS1 | Very Good
From $1,458
Compare at $1,841
IGISave 80.9%3.36ct | Cushion | D | VS1 | Very Good
From $1,701
Compare at $8,900
IGISave 84.5%3.36ct | Cushion | D | VVS2 | Very Good
From $1,454
Compare at $9,370
IGISave 60.5%3.36ct | Cushion | D | VVS2 | Very Good
From $1,607
Compare at $4,065
GIASave 77%3.37ct | Cushion | G | VS2 | Excellent
From $1,899
Compare at $8,270
GIASave 79%3.37ct | Cushion | D | IF | Excellent
From $4,852
Compare at $23,160
GIASave 67.2%3.37ct | Cushion | F | VVS1 | Excellent
From $2,744
Compare at $8,360
GIASave 61.2%3.37ct | Cushion | E | VS2 | Excellent
From $2,645
Compare at $6,820
GIASave 29%3.37ct | Cushion | D | FL | Ideal
From $21,430
Compare at $30,190
IGISave 78.1%3.37ct | Cushion | D | VS1 | Ideal
From $1,407
Compare at $6,430
IGISave 75.1%3.37ct | Cushion | D | VVS1 | Good
From $2,733
Compare at $10,980
IGISave 58.2%3.37ct | Cushion | D | IF | Ideal
From $6,693
Compare at $16,000
IGISave 83.4%3.37ct | Cushion | D | VVS1 | Ideal
From $1,815
Compare at $10,950
IGISave 40.3%3.37ct | Cushion | E | VVS1 | Very Good
From $2,381
Compare at $3,986
GCALSave 66.8%3.37ct | Cushion | D | FL | Ideal
From $16,227
Compare at $48,865
GCALSave 74.6%3.37ct | Cushion | D | IF | Excellent
From $6,446
Compare at $25,360
IGISave 98.7%3.37ct | Cushion | H | VS1 | Excellent
From $866
Compare at $65,715
IGISave 84.6%3.37ct | Cushion | G | VS2 | Very Good
From $1,079
Compare at $7,026
IGISave 68.8%3.37ct | Cushion | K | VVS2 | Excellent
From $699
Compare at $2,241
IGISave 63.8%3.37ct | Cushion | E | IF | Very Good
From $4,826
Compare at $13,329
IGISave 74.3%3.37ct | Cushion | D | IF | Ideal
From $3,616
Compare at $14,090
IGISave 60.5%3.37ct | Cushion | D | VVS2 | Very Good
From $1,611
Compare at $4,075
IGISave 86.1%3.37ct | Cushion | F | VVS2 | Ideal
From $986
Compare at $7,100
IGISave 57.6%3.37ct | Cushion | D | VVS1 | Very Good
From $2,631
Compare at $6,200
GIASave 57.6%3.37ct | Cushion | E | VVS2 | Ideal
From $6,706
Compare at $15,820
Entry pricing in this category starts around $699.
What to Know When Shopping for 3.4 Carat Cushion Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $22,841 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 $1,829 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 258 comparable stones in this segment. Prices start around $699 and go up to $23,540.
Based on the latest market data, the average asking price is about $2,884 with a median around $1,829.
The observed spread is roughly $22,841 across tracked listings, which is about 97.0% 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 $1,829, 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 $22,841 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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