2.9 Carat Cushion Lab Grown Diamond Prices Comparison
As of May 2026, 2.9 carat cushion lab grown diamonds usually range from $423 to $12,585, with an average price of $2,594.In the last month, prices for these diamonds are down 12.2%.Compare 327 verified listings across 10 retailers tracked by CaratRadar.
2.9 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 327 verified 2.9-carat cushion lab grown diamonds listed across 10 online retailers. Prices in this segment range from $423 to $12,585, with an average asking price of $2,594 and a median of $1,802.
The price spread of $12,162 (96.6% 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.
327 diamonds tracked in this segment
Price range: $423 to $12,585
Average price: $2,594
Median price: $1,802
Available across 10 retailers
Savings potential: up to 96.6%
Price Range Overview
As of May 30, 2026Real market range for this carat, shape, and diamond type.
327
$423
$2,594
$1,802
$12,585
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 41.8%IGI | 2.93ct | Cushion | G | VS1 | Very Good
From $486
Compare at $835
Save 63%IGI | 2.9ct | Cushion | G | VS1 | Very Good
From $507
Compare at $1,369
Save 63.2%IGI | 2.92ct | Cushion | G | VS1 | Excellent
From $511
Compare at $1,387
Save 62.5%IGI | 2.95ct | Cushion | H | VS1 | Very Good
From $516
Compare at $1,377
Save 53.6%IGI | 2.96ct | Cushion | G | VS1 | Very Good
From $517
Compare at $1,115
Save 43.1%IGI | 2.99ct | Cushion | F | VS2 | Very Good
From $546
Compare at $960
IGI | 2.91ct | Cushion | F | VS1 | Very Good
From $559
Compare at $1,599
Save 64.8%IGI | 2.91ct | Cushion | F | VS1 | Very Good
From $562
Compare at $1,597
Save 74.4%IGI | 2.9ct | Cushion | F | VS1 | Excellent
From $564
Compare at $2,200
Save 71.9%IGI | 2.94ct | Cushion | F | VS1 | Very Good
From $565
Compare at $2,008
Save 71.9%IGI | 2.95ct | Cushion | F | VS2 | Very Good
From $566
Compare at $2,015
Save 70%IGI | 2.91ct | Cushion | E | VS2 | Very Good
From $568
Compare at $1,895
Save 67.2%IGI | 2.9ct | Cushion | F | VVS2 | Very Good
From $570
Compare at $1,740
Save 74.1%IGI | 2.9ct | Cushion | F | VS1 | Excellent
From $570
Compare at $2,200
Save 74.1%IGI | 2.9ct | Cushion | F | VS1 | Very Good
From $570
Compare at $2,200
Save 65.7%IGI | 2.9ct | Cushion | E | VS1 | Very Good
From $576
Compare at $1,681
Save 65.7%IGI | 2.9ct | Cushion | E | VS1 | Very Good
From $576
Compare at $1,681
Save 58.5%IGI | 2.94ct | Cushion | G | VS2 | Ideal
From $579
Compare at $1,395
Save 65.5%IGI | 2.9ct | Cushion | E | VS1 | Very Good
From $581
Compare at $1,686
Save 66%IGI | 2.93ct | Cushion | E | VS1 | Very Good
From $582
Compare at $1,714
Save 67.9%IGI | 2.9ct | Cushion | E | VVS2 | Excellent
From $583
Compare at $1,815
Save 67.9%IGI | 2.9ct | Cushion | E | VVS2 | Excellent
From $583
Compare at $1,815
Save 67.9%IGI | 2.9ct | Cushion | E | VVS2 | Excellent
From $583
Compare at $1,815
Save 68%IGI | 2.91ct | Cushion | E | VVS2 | Excellent
From $585
Compare at $1,826
IGI | 2.94ct | Cushion | E | VS1 | Very Good
From $585
Compare at $1,725
Save 79.5%IGI | 2.91ct | Cushion | F | VVS2 | Very Good
From $585
Compare at $2,850
Save 68.1%IGI | 2.92ct | Cushion | E | VVS2 | Very Good
From $587
Compare at $1,839
Save 68.2%IGI | 2.93ct | Cushion | E | VVS2 | Excellent
From $589
Compare at $1,851
Save 67.5%IGI | 2.9ct | Cushion | E | VVS2 | Very Good
From $589
Compare at $1,815
Save 67.5%IGI | 2.9ct | Cushion | E | VVS2 | Excellent
From $589
Compare at $1,815
Save 77.8%IGI | 2.94ct | Cushion | H | VVS2 | Very Good
From $589
Compare at $2,650
Save 68.3%IGI | 2.94ct | Cushion | E | VVS2 | Excellent
From $591
Compare at $1,862
Save 68.3%IGI | 2.94ct | Cushion | E | VVS2 | Excellent
From $591
Compare at $1,862
Save 67.6%IGI | 2.91ct | Cushion | E | VVS2 | Excellent
From $592
Compare at $1,828
Save 67.6%IGI | 2.91ct | Cushion | E | VVS2 | Excellent
From $592
Compare at $1,826
Save 67.7%IGI | 2.92ct | Cushion | E | VVS2 | Very Good
From $594
Compare at $1,841
Save 67.7%IGI | 2.92ct | Cushion | E | VVS2 | Very Good
From $594
Compare at $1,839
Save 67.7%IGI | 2.92ct | Cushion | E | VVS2 | Very Good
From $594
Compare at $1,839
Save 67.7%IGI | 2.92ct | Cushion | E | VVS2 | Very Good
From $594
Compare at $1,839
Save 67.8%IGI | 2.93ct | Cushion | E | VVS2 | Very Good
From $596
Compare at $1,851
Save 67.8%IGI | 2.93ct | Cushion | E | VVS2 | Very Good
From $596
Compare at $1,851
Save 67.8%IGI | 2.93ct | Cushion | E | VVS2 | Very Good
From $596
Compare at $1,851
Save 68.9%IGI | 2.99ct | Cushion | E | VVS2 | Very Good
From $599
Compare at $1,927
Save 78.4%IGI | 2.9ct | Cushion | G | VS1 | Very Good
From $608
Compare at $2,810
Save 74.7%IGI | 2.9ct | Cushion | E | VS1 | Excellent
From $609
Compare at $2,405
Save 74.7%IGI | 2.9ct | Cushion | E | VS1 | Very Good
From $609
Compare at $2,405
Save 68.2%IGI | 2.98ct | Cushion | E | VVS2 | Very Good
From $611
Compare at $1,919
Save 65.8%IGI | 2.99ct | Cushion | E | VS1 | Very Good
From $613
Compare at $1,790
Save 74.4%IGI | 2.9ct | Cushion | E | VS1 | Excellent
From $615
Compare at $2,405
Save 25.2%IGI | 2.97ct | Cushion | G | VS1 | Ideal
From $616
Compare at $824
Entry pricing in this category starts around $423.
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 $12,162 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 $1,802 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 327 comparable stones in this segment. Prices start around $423 and go up to $12,585.
Based on the latest market data, the average asking price is about $2,594 with a median around $1,802.
The observed spread is roughly $12,162 across tracked listings, which is about 96.6% 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 $2,594. The median price is $1,802, 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 10 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 $12,162 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.
Related Price Categories
Explore adjacent carat ranges and shapes to compare market shifts.
2.8 Carat Cushion Lab Grown Diamond Prices
2.7 Carat Cushion Lab Grown Diamond Prices
2.6 Carat Cushion Lab Grown Diamond Prices
3 Carat Cushion Lab Grown Diamond Prices
2.5 Carat Cushion Lab Grown Diamond Prices
3.1 Carat Cushion Lab Grown Diamond Prices
2.4 Carat Cushion Lab Grown Diamond Prices
2.9 Carat Round Lab Grown Diamond Prices
2.9 Carat Radiant Lab Grown Diamond Prices
2.9 Carat Oval Lab Grown Diamond Prices
2.9 Carat Emerald Lab Grown Diamond Prices
2.9 Carat Marquise Lab Grown Diamond Prices
Tracking Lab Grown inventory for 2.9 carat Cushion diamonds.