2.9 Carat Cushion Lab Grown Diamond Prices Comparison
As of February 2026, 2.9 carat cushion lab grown diamonds usually range from $667 to $16,170, with an average price of $1,540.In the last month, prices for these diamonds are down 4.3%.Compare 502 verified listings across 11 retailers tracked by CaratRadar.
2.9 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 502 verified 2.9-carat cushion lab grown diamonds listed across 11 online retailers. Prices in this segment range from $667 to $16,170, with an average asking price of $1,540 and a median of $1,100.
The price spread of $15,503 (95.9% 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.
502 diamonds tracked in this segment
Price range: $667 to $16,170
Average price: $1,540
Median price: $1,100
Available across 11 retailers
Savings potential: up to 95.9%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
502
$667
$1,540
$1,100
$16,170
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 70.7%2.86ct | Cushion | D | VVS2 | Ideal
From $2,344
Compare at $8,010
GIASave 43.5%2.86ct | Cushion | E | VS1 | Excellent
From $1,608
Compare at $2,844
GIASave 77.1%2.86ct | Cushion | D | FL | Excellent
From $10,755
Compare at $46,930
IGISave 82.4%2.86ct | Cushion | I | VS1 | Ideal
From $831
Compare at $4,730
IGISave 51.1%2.86ct | Cushion | G | VS1 | Ideal
From $6,990
Compare at $14,290
IGISave 48.4%2.86ct | Cushion | H | VS2 | Excellent
From $3,604
Compare at $6,980
GIASave 72.1%2.86ct | Cushion | D | VVS2 | Excellent
From $2,211
Compare at $7,920
IGISave 75.7%2.86ct | Cushion | G | VS2 | Very Good
From $1,239
Compare at $5,090
IGISave 49.9%2.86ct | Cushion | E | VS1 | Ideal
From $896
Compare at $1,788
IGISave 85.7%2.86ct | Cushion | E | VS1 | Ideal
From $896
Compare at $6,280
IGISave 84.1%2.86ct | Cushion | F | VS1 | Ideal
From $869
Compare at $5,450
IGISave 82.4%2.86ct | Cushion | E | VS1 | Ideal
From $1,089
Compare at $6,180
IGISave 39.1%2.86ct | Cushion | E | VS1 | Ideal
From $1,089
Compare at $1,788
IGISave 32.7%2.86ct | Cushion | E | VS1 | Excellent
From $1,309
Compare at $1,947
IGISave 86.2%2.86ct | Cushion | D | VVS1 | Ideal
From $1,285
Compare at $9,280
IGISave 84.5%2.86ct | Cushion | D | VVS1 | Ideal
From $1,436
Compare at $9,290
IGISave 20.3%2.86ct | Cushion | D | VVS2 | Very Good
From $1,405
Compare at $1,763
GIASave 75.8%2.86ct | Cushion | D | VVS1 | Ideal
From $2,539
Compare at $10,480
GIASave 69.3%2.86ct | Cushion | F | VVS2 | Ideal
From $1,573
Compare at $5,120
GIASave 43.5%2.86ct | Cushion | E | VS1 | Excellent
From $1,608
Compare at $2,844
IGISave 85.7%2.86ct | Cushion | E | VS1 | Ideal
From $896
Compare at $6,280
IGISave 88.5%2.86ct | Cushion | F | VVS2 | Ideal
From $691
Compare at $6,030
IGISave 49.9%2.86ct | Cushion | E | VS1 | Ideal
From $896
Compare at $1,788
IGISave 64%2.86ct | Cushion | G | VS1 | Excellent
From $667
Compare at $1,853
IGISave 59.8%2.86ct | Cushion | E | VVS2 | Ideal
From $924
Compare at $2,298
IGISave 84.7%2.86ct | Cushion | E | VVS2 | Excellent
From $1,360
Compare at $8,910
IGISave 85%2.86ct | Cushion | D | VVS2 | Ideal
From $1,580
Compare at $10,570
IGISave 77.9%2.86ct | Cushion | D | VVS2 | Excellent
From $2,335
Compare at $10,570
IGISave 80.2%2.86ct | Cushion | D | IF | Ideal
From $3,229
Compare at $16,280
IGISave 85.6%2.86ct | Cushion | D | VVS2 | Ideal
From $1,359
Compare at $9,440
IGISave 30.7%2.86ct | Cushion | D | VVS2 | Ideal
From $4,072
Compare at $5,880
IGISave 58.2%2.86ct | Cushion | E | VVS2 | Excellent
From $994
Compare at $2,378
GCALSave 72.9%2.86ct | Cushion | D | VVS1 | Ideal
From $2,443
Compare at $9,000
IGISave 69.4%2.86ct | Cushion | G | VVS2 | Very Good
From $1,073
Compare at $3,510
IGISave 20.3%2.86ct | Cushion | D | VVS2 | Very Good
From $1,405
Compare at $1,763
IGISave 69.6%2.86ct | Cushion | E | VVS1 | Very Good
From $1,743
Compare at $5,740
IGISave 62%2.86ct | Cushion | E | VS1 | Very Good
From $1,788
Compare at $4,700
IGISave 20.1%2.86ct | Cushion | F | VS2 | Very Good
From $875
Compare at $1,096
IGISave 75.6%2.86ct | Cushion | D | VVS2 | Very Good
From $1,645
Compare at $6,730
IGISave 84.9%2.86ct | Cushion | D | VVS2 | Very Good
From $1,196
Compare at $7,920
IGISave 79.8%2.86ct | Cushion | E | VS2 | Very Good
From $1,092
Compare at $5,410
IGISave 52%2.86ct | Cushion | E | VS1 | Very Good
From $1,748
Compare at $3,639
IGISave 78.8%2.86ct | Cushion | E | VVS2 | Very Good
From $1,178
Compare at $5,560
IGISave 86.3%2.86ct | Cushion | D | VS1 | Ideal
From $913
Compare at $6,650
IGISave 85%2.86ct | Cushion | E | VVS2 | Very Good
From $1,041
Compare at $6,950
IGISave 62.1%2.86ct | Cushion | D | VVS2 | Excellent
From $910
Compare at $2,398
IGISave 65.9%2.86ct | Cushion | E | VVS2 | Excellent
From $812
Compare at $2,378
IGISave 65.9%2.86ct | Cushion | E | VVS2 | Very Good
From $812
Compare at $2,378
IGISave 57.5%2.86ct | Cushion | F | VS1 | Very Good
From $944
Compare at $2,224
IGISave 15.7%2.86ct | Cushion | E | VVS2 | Very Good
From $1,094
Compare at $1,298
Entry pricing in this category starts around $667.
What to Know When Shopping for 2.9 Carat Cushion Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $15,503 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 $1,100 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 502 comparable stones in this segment. Prices start around $667 and go up to $16,170.
Based on the latest market data, the average asking price is about $1,540 with a median around $1,100.
The observed spread is roughly $15,503 across tracked listings, which is about 95.9% 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 $1,100, 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 $15,503 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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