0.5 Carat Cushion Lab Grown Diamond Prices Comparison
As of May 2026, 0.5 carat cushion lab grown diamonds usually range from $87 to $1,461, with an average price of $461.In the last month, prices for these diamonds are down 3.7%.Compare 591 verified listings across 7 retailers tracked by CaratRadar.
0.5 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 591 verified 0.5-carat cushion lab grown diamonds listed across 7 online retailers. Prices in this segment range from $87 to $1,461, with an average asking price of $461 and a median of $411.
The price spread of $1,374 (94.0% 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.
591 diamonds tracked in this segment
Price range: $87 to $1,461
Average price: $461
Median price: $411
Available across 7 retailers
Savings potential: up to 94.0%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
591
$87
$461
$411
$1,461
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 63.9%IGI | 0.5ct | Cushion | F | VVS2 | Very Good
From $87
Compare at $241
Save 55.1%IGI | 0.51ct | Cushion | D | VVS2 | Very Good
From $119
Compare at $265
Save 69.8%IGI | 0.52ct | Cushion | F | VS2 | Very Good
From $127
Compare at $420
Save 71.1%IGI | 0.54ct | Cushion | E | VS2 | Very Good
From $127
Compare at $440
Save 39.1%IGI | 0.55ct | Cushion | G | SI1 | Very Good
From $128
Compare at $210
Save 72.3%IGI | 0.54ct | Cushion | E | VS2 | Very Good
From $130
Compare at $470
Save 69%IGI | 0.53ct | Cushion | F | VS2 | Very Good
From $130
Compare at $420
Save 70.5%IGI | 0.5ct | Cushion | D | VS1 | Very Good
From $130
Compare at $440
Save 71.1%IGI | 0.55ct | Cushion | G | VS1 | Very Good
From $130
Compare at $450
Save 69.5%IGI | 0.53ct | Cushion | G | VS2 | Ideal
From $131
Compare at $430
Save 54.5%IGI | 0.53ct | Cushion | D | VS2 | Very Good
From $131
Compare at $288
Save 54.4%IGI | 0.5ct | Cushion | D | VS1 | Very Good
From $133
Compare at $292
Save 69.5%IGI | 0.54ct | Cushion | G | VS2 | Good
From $134
Compare at $440
Save 68.1%IGI | 0.54ct | Cushion | E | SI1 | Ideal
From $134
Compare at $420
Save 70.9%IGI | 0.5ct | Cushion | E | VVS2 | Good
From $134
Compare at $460
Save 70.9%IGI | 0.52ct | Cushion | D | VS1 | Very Good
From $137
Compare at $470
Save 67.8%IGI | 0.5ct | Cushion | D | VS1 | Excellent
From $137
Compare at $425
Save 71%IGI | 0.55ct | Cushion | F | VS1 | Ideal
From $139
Compare at $480
Save 68%IGI | 0.51ct | Cushion | D | VS1 | Very Good
From $139
Compare at $434
Save 68.2%IGI | 0.5ct | Cushion | D | VS2 | Good
From $140
Compare at $440
Save 72.4%IGI | 0.52ct | Cushion | D | VVS2 | Very Good
From $141
Compare at $510
Save 70.6%IGI | 0.59ct | Cushion | F | VS1 | Excellent
From $141
Compare at $480
Save 64.3%IGI | 0.52ct | Cushion | D | VVS2 | Very Good
From $141
Compare at $395
Save 68.4%IGI | 0.52ct | Cushion | D | VS1 | Excellent
From $142
Compare at $450
Save 70.4%IGI | 0.55ct | Cushion | F | VS2 | Ideal
From $142
Compare at $480
Save 68.7%IGI | 0.55ct | Cushion | E | VVS2 | Excellent
From $144
Compare at $460
Save 60.8%IGI | 0.54ct | Cushion | D | VS2 | Very Good
From $144
Compare at $367
Save 71.2%IGI | 0.55ct | Cushion | E | VVS2 | Very Good
From $144
Compare at $500
Save 71.2%IGI | 0.55ct | Cushion | D | VS1 | Very Good
From $144
Compare at $500
Save 65.7%IGI | 0.5ct | Cushion | F | VVS2 | Excellent
From $144
Compare at $420
Save 65.5%IGI | 0.54ct | Cushion | F | VS2 | Good
From $145
Compare at $420
Save 69.1%IGI | 0.56ct | Cushion | E | VS1 | Excellent
From $145
Compare at $470
Save 67%IGI | 0.51ct | Cushion | E | VVS2 | Very Good
From $145
Compare at $440
Save 68.3%IGI | 0.54ct | Cushion | G | VVS2 | Very Good
From $146
Compare at $460
Save 54.5%IGI | 0.5ct | Cushion | E | VVS2 | Very Good
From $147
Compare at $323
Save 54.5%IGI | 0.5ct | Cushion | E | VVS2 | Very Good
From $147
Compare at $323
Save 69.4%IGI | 0.59ct | Cushion | G | VS1 | Very Good
From $147
Compare at $480
Save 54.5%IGI | 0.5ct | Cushion | E | VVS2 | Very Good
From $147
Compare at $323
Save 54.5%IGI | 0.5ct | Cushion | E | VVS2 | Very Good
From $147
Compare at $323
Save 67.2%IGI | 0.5ct | Cushion | D | VS1 | Very Good
From $147
Compare at $448
Save 68%IGI | 0.53ct | Cushion | D | VS1 | Very Good
From $147
Compare at $460
Save 54.4%IGI | 0.53ct | Cushion | F | VS1 | Excellent
From $147
Compare at $322
Save 66.6%IGI | 0.5ct | Cushion | E | VVS2 | Very Good
From $147
Compare at $440
Save 66.4%IGI | 0.53ct | Cushion | E | VS1 | Excellent
From $148
Compare at $440
Save 66.4%IGI | 0.51ct | Cushion | D | VS1 | Ideal
From $148
Compare at $440
Save 68.5%IGI | 0.57ct | Cushion | G | VS1 | Very Good
From $148
Compare at $470
Save 47.4%IGI | 0.51ct | Cushion | E | VVS2 | Very Good
From $150
Compare at $285
Save 47.4%IGI | 0.51ct | Cushion | E | VVS2 | Very Good
From $150
Compare at $285
Save 47.4%IGI | 0.51ct | Cushion | E | VVS2 | Very Good
From $150
Compare at $285
Save 69.4%IGI | 0.56ct | Cushion | D | VS1 | Excellent
From $150
Compare at $490
Entry pricing in this category starts around $87.
What to Know When Shopping for 0.5 Carat Cushion Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $1,374 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 $411 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 591 comparable stones in this segment. Prices start around $87 and go up to $1,461.
Based on the latest market data, the average asking price is about $461 with a median around $411.
The observed spread is roughly $1,374 across tracked listings, which is about 94.0% 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 $461. The median price is $411, 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 7 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 $1,374 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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