10.5 Carat Cushion Lab Grown Diamond Prices Comparison
As of July 2026, 10.5 carat cushion lab grown diamonds usually range from $800 to $43,907, with an average price of $9,694.In the last month, prices for these diamonds are down 1%.Compare 27 verified listings across 6 retailers tracked by CaratRadar.
10.5 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 27 verified 10.5-carat cushion lab grown diamonds listed across 6 online retailers. Prices in this segment range from $800 to $43,907, with an average asking price of $9,694 and a median of $7,882.
The price spread of $43,107 (98.2% 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.
27 diamonds tracked in this segment
Price range: $800 to $43,907
Average price: $9,694
Median price: $7,882
Available across 6 retailers
Savings potential: up to 98.2%
Price Range Overview
As of Jul 10, 2026Real market range for this carat, shape, and diamond type.
27
$800
$9,694
$7,882
$43,907
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 75.1%IGI | 10.53ct | Cushion | F | VVS2 | Excellent
From $1,761
Compare at $7,082
IGI | 10.52ct | Cushion | G | VS2 | Ideal
From $1,909
Compare at $8,381
Save 75.8%IGI | 10.54ct | Cushion | H | VS2 | Ideal
From $1,912
Compare at $7,910
Save 79.3%IGI | 10.59ct | Cushion | F | VVS2 | Very Good
From $2,086
Compare at $10,064
Save 79%IGI | 10.57ct | Cushion | F | VVS2 | Ideal
From $2,113
Compare at $10,045
IGI | 10.58ct | Cushion | H | VVS2 | Ideal
From $2,295
Compare at $8,662
Save 75%IGI | 10.52ct | Cushion | H | VS1 | Ideal
From $2,375
Compare at $9,483
Save 79.2%IGI | 10.55ct | Cushion | E | VVS2 | Very Good
From $2,687
Compare at $12,888
IGI | 10.52ct | Cushion | FANCY | VS2 | Very Good
From $2,739
Compare at $10,385
Save 69.1%IGI | 10.54ct | Cushion | F | VVS2 | Very Good
From $2,886
Compare at $9,351
IGI | 10.53ct | Cushion | D | VS2 | Ideal
From $3,851
Compare at $12,870
IGI | 10.54ct | Cushion | F | VS1 | Excellent
From $4,265
Save 77.3%IGI | 10.5ct | Cushion | D | VVS2 | Very Good
From $4,611
Compare at $20,316
Save 56.4%IGI | 10.52ct | Cushion | E | VVS2 | Very Good
From $4,620
Compare at $10,585
Save 74%IGI | 10.56ct | Cushion | FANCY | VS2 | Very Good
From $4,752
Compare at $18,298
IGI | 10.55ct | Cushion | G | VS1 | Ideal
From $5,111
Compare at $10,523
Save 65.7%IGI | 10.55ct | Cushion | D | VS1 | Ideal
From $5,228
Compare at $15,247
IGI | 10.55ct | Cushion | FANCY | VS1 | Ideal
From $6,336
Compare at $17,075
Save 67.7%IGI | 10.51ct | Cushion | D | VVS2 | Excellent
From $6,820
Compare at $21,144
Save 66.1%IGI | 10.58ct | Cushion | FANCY | VS1 | Very Good
From $7,330
Compare at $21,633
Save 66.1%IGI | 10.59ct | Cushion | FANCY | VS1 | Very Good
From $7,337
Compare at $21,653
Save 19.8%IGI | 10.54ct | Cushion | F | VVS2 | Fair
From $9,755
Compare at $12,163
Save 19.7%IGI | 10.56ct | Cushion | F | VVS2 | Fair
From $9,789
Compare at $12,186
Save 66.8%IGI | 10.55ct | Cushion | E | VVS1 | Very Good
From $10,026
Compare at $30,158
Save 76.8%IGI | 10.5ct | Cushion | F | VVS1 | Excellent
From $17,254
Compare at $74,260
Save 47.3%GIA | 10.53ct | Cushion | F | VS1 | Ideal
From $22,060
Compare at $41,830
Save 41.9%GIA | 10.58ct | Cushion | E | VS1 | Ideal
From $26,420
Compare at $45,490
Entry pricing in this category starts around $800.
What to Know When Shopping for 10.5 Carat Cushion Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $43,107 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 $7,882 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 27 comparable stones in this segment. Prices start around $800 and go up to $43,907.
Based on the latest market data, the average asking price is about $9,694 with a median around $7,882.
The observed spread is roughly $43,107 across tracked listings, which is about 98.2% 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 $9,694. The median price is $7,882, 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 $43,107 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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