0.5 Carat Cushion Lab Grown Diamond Prices Comparison
As of April 2026, 0.5 carat cushion lab grown diamonds usually range from $111 to $1,471, with an average price of $499.In the last month, prices for these diamonds are down 0.9%.Compare 572 verified listings across 6 retailers tracked by CaratRadar.
0.5 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 572 verified 0.5-carat cushion lab grown diamonds listed across 6 online retailers. Prices in this segment range from $111 to $1,471, with an average asking price of $499 and a median of $458.
The price spread of $1,360 (92.5% 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.
572 diamonds tracked in this segment
Price range: $111 to $1,471
Average price: $499
Median price: $458
Available across 6 retailers
Savings potential: up to 92.5%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
572
$111
$499
$458
$1,471
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 20.7%IGI | 0.5ct | Cushion | D | VS1 | Excellent
From $381
Compare at $480
Save 23.7%IGI | 0.5ct | Cushion | D | VVS1 | Excellent
From $373
Compare at $489
Save 21.4%IGI | 0.5ct | Cushion | D | VVS1 | Ideal
From $294
Compare at $374
IGI | 0.5ct | Cushion | D | VVS1 | Ideal
From $373
Compare at $398
Save 57%IGI | 0.5ct | Cushion | D | VVS1 | Ideal
From $503
Compare at $1,170
Save 47.5%IGI | 0.5ct | Cushion | D | VS2 | Ideal
From $231
Compare at $440
Save 75.1%IGI | 0.5ct | Cushion | D | VVS2 | Very Good
From $339
Compare at $1,360
IGI | 0.5ct | Cushion | D | VVS2 | Good
From $347
Compare at $366
Save 18.5%IGI | 0.5ct | Cushion | D | VS2 | Ideal
From $375
Compare at $460
Save 36.6%IGI | 0.5ct | Cushion | D | VVS2 | Very Good
From $304
Compare at $480
Save 32.6%IGI | 0.5ct | Cushion | D | VVS1 | Very Good
From $290
Compare at $430
Save 47.5%IGI | 0.5ct | Cushion | D | VS2 | Ideal
From $231
Compare at $440
Save 21.4%IGI | 0.5ct | Cushion | D | VVS1 | Ideal
From $294
Compare at $374
Save 21.4%IGI | 0.5ct | Cushion | D | VVS1 | Ideal
From $294
Compare at $374
Save 21.4%IGI | 0.5ct | Cushion | D | VVS1 | Ideal
From $294
Compare at $374
Save 21.4%IGI | 0.5ct | Cushion | D | VVS1 | Ideal
From $294
Compare at $374
Save 14.2%IGI | 0.5ct | Cushion | E | VVS2 | Very Good
From $277
Compare at $323
IGI | 0.5ct | Cushion | D | VVS2 | Very Good
From $284
Compare at $299
Save 14.2%IGI | 0.5ct | Cushion | E | VVS2 | Very Good
From $277
Compare at $323
Save 14.2%IGI | 0.5ct | Cushion | E | VVS2 | Very Good
From $277
Compare at $323
Save 14.2%IGI | 0.5ct | Cushion | E | VVS2 | Very Good
From $277
Compare at $323
Save 24.8%IGI | 0.5ct | Cushion | E | VVS2 | Good
From $243
Compare at $323
Save 38.6%IGI | 0.5ct | Cushion | D | VS2 | Good
From $264
Compare at $430
Save 70.2%IGI | 0.5ct | Cushion | D | VS1 | Very Good
From $380
Compare at $1,276
Save 70.2%IGI | 0.5ct | Cushion | D | VS1 | Very Good
From $380
Compare at $1,276
Save 35.1%IGI | 0.5ct | Cushion | E | VS2 | Very Good
From $279
Compare at $430
Save 37%IGI | 0.5ct | Cushion | D | VS1 | Very Good
From $277
Compare at $440
Save 39.6%IGI | 0.5ct | Cushion | E | VVS1 | Good
From $290
Compare at $480
Save 33.7%IGI | 0.5ct | Cushion | D | VS2 | Very Good
From $292
Compare at $440
Save 21.4%IGI | 0.5ct | Cushion | D | VVS1 | Ideal
From $294
Compare at $374
Save 21.4%IGI | 0.5ct | Cushion | D | VVS1 | Ideal
From $294
Compare at $374
Save 21.4%IGI | 0.5ct | Cushion | D | VVS1 | Ideal
From $294
Compare at $374
Save 40%IGI | 0.5ct | Cushion | D | VVS1 | Ideal
From $294
Compare at $490
Save 46.6%IGI | 0.5ct | Cushion | E | VVS1 | Ideal
From $267
Compare at $500
Save 35.2%IGI | 0.5ct | Cushion | E | VS1 | Good
From $272
Compare at $420
Save 31.7%IGI | 0.5ct | Cushion | D | VS1 | Excellent
From $308
Compare at $450
Save 79.3%IGI | 0.5ct | Cushion | D | VVS1 | Very Good
From $305
Compare at $1,470
Save 21.4%IGI | 0.5ct | Cushion | D | VVS1 | Very Good
From $294
Compare at $374
Save 29.6%IGI | 0.5ct | Cushion | G | VVS2 | Very Good
From $317
Compare at $450
Save 38.8%IGI | 0.5ct | Cushion | F | VVS2 | Very Good
From $277
Compare at $453
IGI | 0.5ct | Cushion | E | VS1 | Very Good
From $292
Compare at $450
Save 23.8%IGI | 0.5ct | Cushion | D | VVS2 | Good
From $286
Compare at $375
IGI | 0.5ct | Cushion | D | VS1 | Good
From $279
Compare at $300
IGI | 0.5ct | Cushion | D | VS1 | Very Good
From $269
Compare at $460
IGI | 0.51ct | Cushion | E | VVS2 | Ideal
From $318
Compare at $335
IGI | 0.51ct | Cushion | FANCY | VS2 | Very Good
From $331
Compare at $398
Save 33.9%IGI | 0.51ct | Cushion | D | VVS1 | Ideal
From $571
Compare at $865
Save 10.9%IGI | 0.51ct | Cushion | D | VS1 | Ideal
From $388
Compare at $436
Save 24%IGI | 0.51ct | Cushion | D | VVS2 | Very Good
From $266
Compare at $350
Save 72.8%IGI | 0.51ct | Cushion | D | VVS2 | Ideal
From $327
Compare at $1,200
Entry pricing in this category starts around $111.
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 $1,360 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 $458 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 572 comparable stones in this segment. Prices start around $111 and go up to $1,471.
Based on the latest market data, the average asking price is about $499 with a median around $458.
The observed spread is roughly $1,360 across tracked listings, which is about 92.5% 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 $458, 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 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 $1,360 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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