1.7 Carat Cushion Lab Grown Diamond Prices Comparison
As of February 2026, 1.7 carat cushion lab grown diamonds usually range from $415 to $4,966, with an average price of $736.In the last month, prices for these diamonds are down 3.4%.Compare 1,414 verified listings across 10 retailers tracked by CaratRadar.
1.7 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 1,414 verified 1.7-carat cushion lab grown diamonds listed across 10 online retailers. Prices in this segment range from $415 to $4,966, with an average asking price of $736 and a median of $624.
The price spread of $4,551 (91.6% 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.
1,414 diamonds tracked in this segment
Price range: $415 to $4,966
Average price: $736
Median price: $624
Available across 10 retailers
Savings potential: up to 91.6%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
1,414
$415
$736
$624
$4,966
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 51%1.65ct | Cushion | F | SI2 | Very Good
From $658
Compare at $1,344
IGISave 81%1.65ct | Cushion | E | VVS2 | Excellent
From $521
Compare at $2,740
IGISave 71.9%1.65ct | Cushion | F | VS1 | Very Good
From $609
Compare at $2,170
IGISave 73.3%1.65ct | Cushion | G | VS1 | Very Good
From $895
Compare at $3,350
IGISave 72.2%1.65ct | Cushion | E | VS2 | Very Good
From $582
Compare at $2,090
IGISave 72.1%1.65ct | Cushion | G | VS1 | Very Good
From $589
Compare at $2,110
IGISave 72.5%1.65ct | Cushion | G | VS1 | Very Good
From $544
Compare at $1,980
IGISave 72.7%1.65ct | Cushion | G | VS2 | Very Good
From $517
Compare at $1,890
IGISave 71.4%1.65ct | Cushion | F | VS2 | Ideal
From $661
Compare at $2,310
IGISave 71.7%1.65ct | Cushion | E | VS1 | Very Good
From $656
Compare at $2,320
IGISave 66.2%1.65ct | Cushion | F | VVS2 | Very Good
From $873
Compare at $2,586
IGISave 75.3%1.65ct | Cushion | E | VS1 | Ideal
From $612
Compare at $2,480
IGISave 75.6%1.65ct | Cushion | E | VS1 | Ideal
From $614
Compare at $2,510
IGISave 83.9%1.65ct | Cushion | D | VVS2 | Excellent
From $523
Compare at $3,240
IGISave 71.9%1.65ct | Cushion | F | VS1 | Very Good
From $609
Compare at $2,170
IGISave 72.2%1.65ct | Cushion | E | VS2 | Very Good
From $582
Compare at $2,090
IGISave 80.6%1.65ct | Cushion | D | VVS1 | Ideal
From $747
Compare at $3,845
IGISave 81.5%1.65ct | Cushion | E | VVS1 | Ideal
From $611
Compare at $3,310
IGISave 82.9%1.65ct | Cushion | D | VVS2 | Excellent
From $553
Compare at $3,240
IGISave 20%1.65ct | Cushion | F | VS1 | Very Good
From $981
Compare at $1,227
IGISave 78.9%1.65ct | Cushion | F | VVS2 | Ideal
From $483
Compare at $2,290
IGISave 61.3%1.65ct | Cushion | E | VS1 | Very Good
From $510
Compare at $1,320
GCALSave 73.5%1.65ct | Cushion | D | VS1 | Excellent
From $965
Compare at $3,640
GIASave 78.8%1.65ct | Cushion | E | VVS2 | Excellent
From $692
Compare at $3,260
GIASave 38.3%1.65ct | Cushion | E | VS1 | Ideal
From $2,480
Compare at $4,020
GIASave 47.9%1.65ct | Cushion | E | VS2 | Excellent
From $1,282
Compare at $2,460
IGISave 95.4%1.65ct | Cushion | E | SI1 | Excellent
From $579
Compare at $12,540
IGISave 74.1%1.65ct | Cushion | D | SI1 | Ideal
From $549
Compare at $2,120
IGISave 51.1%1.65ct | Cushion | F | VS1 | Very Good
From $706
Compare at $1,445
IGISave 71.7%1.65ct | Cushion | E | VS1 | Very Good
From $656
Compare at $2,320
IGISave 72.1%1.65ct | Cushion | G | VVS2 | Very Good
From $589
Compare at $2,110
IGISave 81%1.65ct | Cushion | E | VS1 | Ideal
From $521
Compare at $2,740
IGISave 72.1%1.65ct | Cushion | G | VVS2 | Very Good
From $589
Compare at $2,110
IGISave 71.8%1.65ct | Cushion | G | VVS2 | Very Good
From $643
Compare at $2,280
IGISave 72.5%1.65ct | Cushion | G | VS1 | Very Good
From $544
Compare at $1,980
IGISave 71.7%1.65ct | Cushion | E | VS2 | Very Good
From $656
Compare at $2,320
IGISave 71.3%1.65ct | Cushion | F | VVS2 | Very Good
From $698
Compare at $2,430
IGISave 79%1.65ct | Cushion | D | VVS2 | Excellent
From $553
Compare at $2,634
IGISave 76.5%1.65ct | Cushion | D | VS1 | Excellent
From $551
Compare at $2,345
IGISave 81.8%1.65ct | Cushion | D | VVS2 | Excellent
From $596
Compare at $3,270
IGISave 76.7%1.65ct | Cushion | E | VVS2 | Very Good
From $678
Compare at $2,910
IGISave 77.6%1.65ct | Cushion | D | VVS1 | Ideal
From $859
Compare at $3,830
IGISave 51.4%1.65ct | Cushion | FANCY | VVS1 | Very Good
From $1,033
Compare at $2,127
IGISave 81%1.65ct | Cushion | D | VS1 | Excellent
From $521
Compare at $2,740
IGISave 69.2%1.65ct | Cushion | E | VS1 | Very Good
From $701
Compare at $2,280
GIASave 83%1.65ct | Cushion | D | SI1 | Excellent
From $822
Compare at $4,850
IGISave 79.7%1.65ct | Cushion | E | VS1 | Ideal
From $508
Compare at $2,500
IGI1.65ct | Cushion | F | VS1 | Very Good
From $500
Compare at $552
IGISave 61.5%1.65ct | Cushion | D | VS1 | Excellent
From $552
Compare at $1,435
IGISave 79%1.65ct | Cushion | D | VVS2 | Excellent
From $553
Compare at $2,634
Entry pricing in this category starts around $415.
What to Know When Shopping for 1.7 Carat Cushion Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $4,551 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 $624 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 1,414 comparable stones in this segment. Prices start around $415 and go up to $4,966.
Based on the latest market data, the average asking price is about $736 with a median around $624.
The observed spread is roughly $4,551 across tracked listings, which is about 91.6% 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 $624, 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 10 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 $4,551 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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