3.1 Carat Cushion Lab Grown Diamond Prices Comparison
As of April 2026, 3.1 carat cushion lab grown diamonds usually range from $570 to $14,952, with an average price of $2,977.In the last month, prices for these diamonds are down 0.2%.Compare 650 verified listings across 12 retailers tracked by CaratRadar.
3.1 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 650 verified 3.1-carat cushion lab grown diamonds listed across 12 online retailers. Prices in this segment range from $570 to $14,952, with an average asking price of $2,977 and a median of $2,235.
The price spread of $14,382 (96.2% 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.
650 diamonds tracked in this segment
Price range: $570 to $14,952
Average price: $2,977
Median price: $2,235
Available across 12 retailers
Savings potential: up to 96.2%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
650
$570
$2,977
$2,235
$14,952
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 24.3%GCAL | 3.11ct | Cushion | F | VS2 | Ideal
From $3,320
Compare at $4,385
Save 76.5%GCAL | 3.11ct | Cushion | G | VS2 | Excellent
From $1,252
Compare at $5,320
Save 43.9%GCAL | 3.11ct | Cushion | D | VVS1 | Ideal
From $5,754
Compare at $10,250
Save 72.9%GCAL | 3.11ct | Cushion | E | VVS1 | Excellent
From $2,349
Compare at $8,660
Save 77.6%GIA | 3.11ct | Cushion | F | VS1 | Excellent
From $2,035
Compare at $9,100
Save 70.9%GIA | 3.11ct | Cushion | D | VVS2 | Excellent
From $2,316
Compare at $7,970
Save 65.6%GIA | 3.11ct | Cushion | H | VS1 | Ideal
From $3,639
Compare at $10,570
Save 79%GIA | 3.11ct | Cushion | G | VS1 | Excellent
From $2,275
Compare at $10,850
Save 67.2%GIA | 3.11ct | Cushion | E | VVS2 | Good
From $2,484
Compare at $7,570
Save 64.1%GIA | 3.11ct | Cushion | F | SI1 | Excellent
From $3,359
Compare at $9,360
Save 58.9%GIA | 3.11ct | Cushion | D | VVS2 | Excellent
From $4,135
Compare at $10,070
Save 45.6%GIA | 3.11ct | Cushion | E | VS2 | Ideal
From $4,696
Compare at $8,630
Save 77%GIA | 3.11ct | Cushion | G | VS2 | Excellent
From $1,747
Compare at $7,590
Save 77.6%GIA | 3.11ct | Cushion | E | VS1 | Excellent
From $2,071
Compare at $9,260
Save 69.6%GIA | 3.11ct | Cushion | D | VVS1 | Excellent
From $2,844
Compare at $9,370
Save 64.2%GIA | 3.11ct | Cushion | E | VVS2 | Ideal
From $2,693
Compare at $7,530
Save 77.6%GIA | 3.11ct | Cushion | F | VVS2 | Excellent
From $2,173
Compare at $9,710
Save 60.8%IGI | 3.11ct | Cushion | H | VS1 | Ideal
From $2,059
Compare at $5,250
Save 70.6%IGI | 3.11ct | Cushion | H | SI1 | Ideal
From $1,019
Compare at $3,470
Save 82.2%IGI | 3.11ct | Cushion | H | VS1 | Good
From $670
Compare at $3,760
IGI | 3.11ct | Cushion | H | VVS2 | Ideal
From $1,706
Compare at $1,710
Save 32.4%IGI | 3.11ct | Cushion | H | VS1 | Ideal
From $1,207
Compare at $1,785
Save 47.8%IGI | 3.11ct | Cushion | I | VVS2 | Ideal
From $2,485
Compare at $4,760
Save 80.5%IGI | 3.11ct | Cushion | G | VS1 | Ideal
From $1,112
Compare at $5,710
Save 50.7%IGI | 3.11ct | Cushion | H | VVS2 | Excellent
From $1,484
Compare at $3,010
Save 38.1%IGI | 3.11ct | Cushion | G | VS2 | Very Good
From $920
Compare at $1,487
Save 25.5%IGI | 3.11ct | Cushion | G | VS1 | Ideal
From $1,112
Compare at $1,493
Save 73%IGI | 3.11ct | Cushion | E | VS1 | Ideal
From $1,323
Compare at $4,900
Save 66.1%IGI | 3.11ct | Cushion | H | VVS2 | Very Good
From $1,395
Compare at $4,110
Save 66.2%IGI | 3.11ct | Cushion | H | VS2 | Good
From $1,315
Compare at $3,890
Save 66%IGI | 3.11ct | Cushion | H | VS1 | Good
From $1,385
Compare at $4,070
Save 66.2%IGI | 3.11ct | Cushion | H | VS2 | Good
From $1,315
Compare at $3,890
Save 81.2%IGI | 3.11ct | Cushion | G | VS1 | Ideal
From $994
Compare at $5,280
Save 73.1%IGI | 3.11ct | Cushion | G | VVS2 | Ideal
From $1,048
Compare at $3,890
Save 81.2%IGI | 3.11ct | Cushion | G | VS1 | Ideal
From $994
Compare at $5,280
Save 34.2%IGI | 3.11ct | Cushion | E | VS1 | Very Good
From $1,395
Compare at $2,120
Save 81.2%IGI | 3.11ct | Cushion | D | VVS2 | Ideal
From $1,635
Compare at $8,680
Save 83.3%IGI | 3.11ct | Cushion | F | VVS2 | Ideal
From $1,100
Compare at $6,590
Save 66.6%IGI | 3.11ct | Cushion | G | VVS2 | Excellent
From $1,443
Compare at $4,320
Save 79.9%IGI | 3.11ct | Cushion | G | VS1 | Excellent
From $1,327
Compare at $6,610
Save 25.5%IGI | 3.11ct | Cushion | F | VS1 | Very Good
From $1,185
Compare at $1,591
Save 79.5%IGI | 3.11ct | Cushion | G | VS2 | Ideal
From $1,281
Compare at $6,240
Save 86%IGI | 3.11ct | Cushion | F | VS1 | Ideal
From $1,110
Compare at $7,940
Save 77.3%IGI | 3.11ct | Cushion | D | VS1 | Ideal
From $1,854
Compare at $8,160
Save 66.1%IGI | 3.11ct | Cushion | I | VVS2 | Very Good
From $1,290
Compare at $3,810
Save 73.2%IGI | 3.11ct | Cushion | D | IF | Ideal
From $5,210
Compare at $19,460
Save 71.6%IGI | 3.11ct | Cushion | D | VVS1 | Ideal
From $2,846
Compare at $10,020
Save 72.6%IGI | 3.11ct | Cushion | G | VS1 | Ideal
From $898
Compare at $3,270
Save 71.6%IGI | 3.11ct | Cushion | D | VVS1 | Ideal
From $2,846
Compare at $10,020
IGI | 3.11ct | Cushion | E | VVS2 | Ideal
From $7,440
Entry pricing in this category starts around $570.
What to Know When Shopping for 3.1 Carat Cushion Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $14,382 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 $2,235 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 650 comparable stones in this segment. Prices start around $570 and go up to $14,952.
Based on the latest market data, the average asking price is about $2,977 with a median around $2,235.
The observed spread is roughly $14,382 across tracked listings, which is about 96.2% 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 $2,235, 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 12 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 $14,382 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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