0.9 Carat Cushion Lab Grown Diamond Prices Comparison
As of May 2026, 0.9 carat cushion lab grown diamonds usually range from $139 to $2,146, with an average price of $626.In the last month, prices for these diamonds are down 5.1%.Compare 1,361 verified listings across 6 retailers tracked by CaratRadar.
0.9 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 1,361 verified 0.9-carat cushion lab grown diamonds listed across 6 online retailers. Prices in this segment range from $139 to $2,146, with an average asking price of $626 and a median of $510.
The price spread of $2,007 (93.5% 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.
1,361 diamonds tracked in this segment
Price range: $139 to $2,146
Average price: $626
Median price: $510
Available across 6 retailers
Savings potential: up to 93.5%
Price Range Overview
As of May 30, 2026Real market range for this carat, shape, and diamond type.
1,361
$139
$626
$510
$2,146
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 62%IGI | 0.95ct | Cushion | K | VS2 | Excellent
From $139
Compare at $366
Save 54.5%IGI | 0.92ct | Cushion | F | VS2 | Very Good
From $140
Compare at $308
Save 66.4%IGI | 0.94ct | Cushion | E | VS1 | Very Good
From $150
Compare at $447
Save 66.6%IGI | 0.91ct | Cushion | D | VS2 | Ideal
From $155
Compare at $464
Save 62%IGI | 0.94ct | Cushion | E | VS2 | Excellent
From $156
Compare at $411
Save 43.4%IGI | 0.95ct | Cushion | F | VS1 | Excellent
From $156
Compare at $275
Save 45.1%IGI | 0.98ct | Cushion | F | VS1 | Very Good
From $156
Compare at $284
Save 45.1%IGI | 0.98ct | Cushion | F | VS1 | Very Good
From $156
Compare at $284
Save 61.9%IGI | 0.95ct | Cushion | E | VS2 | Excellent
From $158
Compare at $415
Save 69.1%IGI | 0.99ct | Cushion | H | VVS1 | Excellent
From $158
Compare at $511
Save 60.8%IGI | 0.92ct | Cushion | E | VS2 | Excellent
From $158
Compare at $403
Save 60%IGI | 0.94ct | Cushion | F | VS1 | Very Good
From $158
Compare at $395
Save 62%IGI | 0.94ct | Cushion | F | VS2 | Very Good
From $158
Compare at $416
Save 78.6%IGI | 0.91ct | Cushion | E | VS1 | Very Good
From $158
Compare at $740
Save 79.7%IGI | 0.91ct | Cushion | D | VS1 | Very Good
From $158
Compare at $780
Save 58.9%IGI | 0.91ct | Cushion | F | VS1 | Very Good
From $158
Compare at $384
Save 60%IGI | 0.94ct | Cushion | F | VS1 | Very Good
From $158
Compare at $395
Save 60.9%IGI | 0.93ct | Cushion | E | VS2 | Excellent
From $159
Compare at $407
Save 59.4%IGI | 0.93ct | Cushion | F | VS1 | Ideal
From $159
Compare at $392
Save 60.5%IGI | 0.92ct | Cushion | F | VVS2 | Excellent
From $160
Compare at $405
Save 78.9%IGI | 0.92ct | Cushion | D | VS1 | Very Good
From $160
Compare at $760
Save 61.4%IGI | 0.95ct | Cushion | E | VS2 | Very Good
From $160
Compare at $415
Save 60.3%IGI | 0.92ct | Cushion | E | VS2 | Ideal
From $160
Compare at $403
Save 59.3%IGI | 0.94ct | Cushion | F | VS1 | Very Good
From $161
Compare at $396
Save 62.5%IGI | 0.97ct | Cushion | F | VS2 | Very Good
From $161
Compare at $429
Save 59.3%IGI | 0.94ct | Cushion | F | VS1 | Very Good
From $161
Compare at $396
Save 61%IGI | 0.95ct | Cushion | E | VS2 | Very Good
From $162
Compare at $415
Save 59.5%IGI | 0.95ct | Cushion | F | VS1 | Very Good
From $162
Compare at $400
Save 75.1%IGI | 0.96ct | Cushion | G | VS1 | Very Good
From $162
Compare at $650
Save 61%IGI | 0.92ct | Cushion | E | VS1 | Very Good
From $162
Compare at $415
Save 62%IGI | 0.93ct | Cushion | D | VS1 | Ideal
From $163
Compare at $429
Save 62.1%IGI | 0.93ct | Cushion | D | VS1 | Excellent
From $163
Compare at $430
Save 61.2%IGI | 0.93ct | Cushion | E | VS1 | Very Good
From $163
Compare at $420
Save 61.2%IGI | 0.93ct | Cushion | E | VS1 | Very Good
From $163
Compare at $420
Save 61.6%IGI | 0.94ct | Cushion | E | VS1 | Very Good
From $163
Compare at $424
Save 59.7%IGI | 0.97ct | Cushion | F | VS1 | Excellent
From $164
Compare at $407
Save 59.3%IGI | 0.96ct | Cushion | F | VS1 | Very Good
From $164
Compare at $403
Save 59.7%IGI | 0.97ct | Cushion | F | VS1 | Ideal
From $164
Compare at $407
Save 59.7%IGI | 0.97ct | Cushion | F | VS1 | Very Good
From $164
Compare at $407
Save 61.2%IGI | 0.97ct | Cushion | E | VS2 | Very Good
From $164
Compare at $423
Save 61.2%IGI | 0.97ct | Cushion | E | VS2 | Very Good
From $164
Compare at $423
Save 59.7%IGI | 0.97ct | Cushion | F | VS1 | Very Good
From $164
Compare at $407
Save 61.5%IGI | 0.92ct | Cushion | D | VS1 | Very Good
From $164
Compare at $426
Save 58.8%IGI | 0.94ct | Cushion | D | VS2 | Excellent
From $165
Compare at $400
Save 61.6%IGI | 0.93ct | Cushion | D | VS1 | Excellent
From $165
Compare at $430
Save 61.6%IGI | 0.93ct | Cushion | D | VS1 | Excellent
From $165
Compare at $430
Save 59.9%IGI | 0.98ct | Cushion | F | VS1 | Very Good
From $165
Compare at $411
Save 59.9%IGI | 0.98ct | Cushion | F | VS1 | Very Good
From $165
Compare at $411
Save 60.5%IGI | 0.95ct | Cushion | F | VVS2 | Very Good
From $165
Compare at $418
Save 61.2%IGI | 0.94ct | Cushion | E | VS1 | Very Good
From $165
Compare at $425
Entry pricing in this category starts around $139.
What to Know When Shopping for 0.9 Carat Cushion Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $2,007 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 $510 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 1,361 comparable stones in this segment. Prices start around $139 and go up to $2,146.
Based on the latest market data, the average asking price is about $626 with a median around $510.
The observed spread is roughly $2,007 across tracked listings, which is about 93.5% 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 $626. The median price is $510, 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 6 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 $2,007 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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