0.3 Carat Cushion Lab Grown Diamond Prices Comparison
As of February 2026, 0.3 carat cushion lab grown diamonds usually range from $147 to $400, with an average price of $232.In the last month, prices for these diamonds are down 5.1%.Compare 76 verified listings across 2 retailers tracked by CaratRadar.
0.3 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 76 verified 0.3-carat cushion lab grown diamonds listed across 2 online retailers. Prices in this segment range from $147 to $400, with an average asking price of $232 and a median of $236.
The price spread of $253 (63.1% 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.
76 diamonds tracked in this segment
Price range: $147 to $400
Average price: $232
Median price: $236
Available across 2 retailers
Savings potential: up to 63.1%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
76
$147
$232
$236
$400
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
IGISave 60.5%0.25ct | Cushion | E | VS1 | Very Good
From $169
Compare at $428
IGISave 60.5%0.25ct | Cushion | D | VS1 | Very Good
From $169
Compare at $428
IGISave 60.5%0.25ct | Cushion | D | VS1 | Very Good
From $169
Compare at $428
IGISave 60.5%0.25ct | Cushion | D | VS1 | Very Good
From $169
Compare at $428
IGISave 60.5%0.25ct | Cushion | E | VS1 | Very Good
From $169
Compare at $428
IGISave 60.5%0.25ct | Cushion | E | VS1 | Very Good
From $169
Compare at $428
IGISave 63%0.25ct | Cushion | D | VVS2 | Very Good
From $166
Compare at $449
IGISave 60.5%0.25ct | Cushion | E | VS1 | Very Good
From $169
Compare at $428
IGISave 63%0.25ct | Cushion | D | VVS2 | Very Good
From $166
Compare at $449
IGISave 59.9%0.26ct | Cushion | D | VS1 | Very Good
From $176
Compare at $438
IGISave 59.9%0.26ct | Cushion | D | VS1 | Very Good
From $176
Compare at $438
IGISave 62.4%0.26ct | Cushion | E | VVS2 | Very Good
From $173
Compare at $459
IGISave 59.9%0.26ct | Cushion | D | VS1 | Very Good
From $176
Compare at $438
IGISave 62.4%0.26ct | Cushion | D | VVS2 | Very Good
From $173
Compare at $459
IGISave 59.9%0.26ct | Cushion | D | VS1 | Very Good
From $176
Compare at $438
IGISave 59.9%0.26ct | Cushion | D | VS1 | Very Good
From $176
Compare at $438
IGISave 62.9%0.27ct | Cushion | E | VS1 | Very Good
From $166
Compare at $447
IGISave 54.5%0.27ct | Cushion | D | VVS1 | Very Good
From $247
Compare at $543
IGISave 61.4%0.27ct | Cushion | E | VVS2 | Very Good
From $160
Compare at $414
IGISave 62.5%0.28ct | Cushion | D | VS1 | Very Good
From $172
Compare at $458
IGISave 62.5%0.28ct | Cushion | D | VS1 | Very Good
From $172
Compare at $458
IGISave 60.2%0.29ct | Cushion | E | VS2 | Very Good
From $172
Compare at $431
IGISave 61.9%0.29ct | Cushion | E | VS1 | Very Good
From $178
Compare at $467
IGISave 27.6%0.3ct | Cushion | D | VVS2 | Very Good
From $224
Compare at $310
IGISave 62.4%0.3ct | Cushion | D | VVS2 | Ideal
From $314
Compare at $834
IGISave 12.3%0.3ct | Cushion | D | VVS2 | Excellent
From $147
Compare at $168
IGISave 21.6%0.3ct | Cushion | D | VVS1 | Good
From $251
Compare at $320
IGISave 54%0.3ct | Cushion | E | VVS1 | Very Good
From $259
Compare at $563
IGISave 41%0.3ct | Cushion | E | VVS1 | Very Good
From $221
Compare at $375
IGISave 62.4%0.3ct | Cushion | D | VVS2 | Ideal
From $314
Compare at $834
IGISave 39.1%0.31ct | Cushion | E | VVS2 | Very Good
From $222
Compare at $365
IGISave 18.3%0.31ct | Cushion | D | IF | Very Good
From $320
Compare at $392
IGISave 32.3%0.31ct | Cushion | D | VS1 | Very Good
From $210
Compare at $310
IGISave 35.6%0.31ct | Cushion | D | VVS1 | Good
From $242
Compare at $375
IGISave 35.6%0.31ct | Cushion | D | VVS1 | Fair
From $242
Compare at $375
IGISave 58.4%0.31ct | Cushion | D | VS1 | Very Good
From $190
Compare at $456
IGISave 39%0.32ct | Cushion | E | VS1 | Very Good
From $223
Compare at $365
IGISave 39%0.32ct | Cushion | D | VS2 | Very Good
From $223
Compare at $365
IGISave 53%0.32ct | Cushion | E | VVS2 | Very Good
From $276
Compare at $588
IGISave 33.6%0.32ct | Cushion | D | VVS2 | Ideal
From $284
Compare at $428
IGISave 28.2%0.32ct | Cushion | D | VS1 | Good
From $236
Compare at $329
IGISave 33.5%0.32ct | Cushion | D | VVS1 | Very Good
From $299
Compare at $449
IGISave 33.6%0.32ct | Cushion | D | VVS2 | Ideal
From $284
Compare at $428
IGISave 33.5%0.32ct | Cushion | D | VVS1 | Very Good
From $299
Compare at $449
IGI0.32ct | Cushion | D | VS2 | Ideal
From $267
Compare at $270
IGISave 58%0.32ct | Cushion | D | VS1 | Very Good
From $196
Compare at $466
IGISave 33.5%0.32ct | Cushion | D | VVS1 | Very Good
From $249
Compare at $375
IGISave 36.9%0.32ct | Cushion | D | VVS1 | Very Good
From $249
Compare at $395
IGISave 30.1%0.32ct | Cushion | D | VS1 | Fair
From $217
Compare at $310
IGISave 54.3%0.32ct | Cushion | D | VVS1 | Very Good
From $252
Compare at $552
Entry pricing in this category starts around $147.
What to Know When Shopping for 0.3 Carat Cushion Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $253 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 $236 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 76 comparable stones in this segment. Prices start around $147 and go up to $400.
Based on the latest market data, the average asking price is about $232 with a median around $236.
The observed spread is roughly $253 across tracked listings, which is about 63.1% 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 $236, 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 2 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 $253 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.
0.4 Carat Cushion Lab Grown Diamond Prices
0.5 Carat Cushion Lab Grown Diamond Prices
0.6 Carat Cushion Lab Grown Diamond Prices
0.7 Carat Cushion Lab Grown Diamond Prices
0.8 Carat Cushion Lab Grown Diamond Prices
0.9 Carat Cushion Lab Grown Diamond Prices
1 Carat Cushion Lab Grown Diamond Prices
0.3 Carat Round Lab Grown Diamond Prices
0.3 Carat Pear Lab Grown Diamond Prices
0.3 Carat Marquise Lab Grown Diamond Prices
0.3 Carat Oval Lab Grown Diamond Prices
0.3 Carat Emerald Lab Grown Diamond Prices
Tracking Lab Grown inventory for 0.3 carat Cushion diamonds.