1.9 Carat Cushion Lab Grown Diamond Prices Comparison
As of February 2026, 1.9 carat cushion lab grown diamonds usually range from $422 to $5,465, with an average price of $780.In the last month, prices for these diamonds are down 3.9%.Compare 1,157 verified listings across 11 retailers tracked by CaratRadar.
1.9 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 1,157 verified 1.9-carat cushion lab grown diamonds listed across 11 online retailers. Prices in this segment range from $422 to $5,465, with an average asking price of $780 and a median of $652.
The price spread of $5,043 (92.3% 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.
1,157 diamonds tracked in this segment
Price range: $422 to $5,465
Average price: $780
Median price: $652
Available across 11 retailers
Savings potential: up to 92.3%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
1,157
$422
$780
$652
$5,465
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 71.4%1.86ct | Cushion | G | VVS2 | Very Good
From $671
Compare at $2,350
GIASave 76.5%1.86ct | Cushion | E | VS2 | Excellent
From $1,073
Compare at $4,560
GIASave 84.5%1.86ct | Cushion | E | VVS2 | Excellent
From $1,098
Compare at $7,100
GIASave 70.4%1.86ct | Cushion | D | VS1 | Ideal
From $1,003
Compare at $3,390
IGISave 78.6%1.86ct | Cushion | G | VS1 | Very Good
From $558
Compare at $2,600
IGISave 71.3%1.86ct | Cushion | F | VS1 | Very Good
From $686
Compare at $2,390
IGISave 39.4%1.86ct | Cushion | E | VS1 | Ideal
From $664
Compare at $1,096
IGISave 57.7%1.86ct | Cushion | D | VVS1 | Ideal
From $728
Compare at $1,722
IGISave 39.4%1.86ct | Cushion | E | VS1 | Very Good
From $664
Compare at $1,096
IGISave 85.2%1.86ct | Cushion | D | VVS2 | Excellent
From $593
Compare at $4,010
IGISave 76.3%1.86ct | Cushion | F | VS1 | Very Good
From $757
Compare at $3,200
IGISave 84.4%1.86ct | Cushion | D | VVS2 | Very Good
From $630
Compare at $4,040
IGISave 84.4%1.86ct | Cushion | D | VVS2 | Very Good
From $630
Compare at $4,040
IGISave 81.5%1.86ct | Cushion | E | VS1 | Very Good
From $715
Compare at $3,860
IGISave 81.8%1.86ct | Cushion | D | VS1 | Very Good
From $748
Compare at $4,110
IGISave 79.4%1.86ct | Cushion | D | VS1 | Ideal
From $704
Compare at $3,420
IGISave 75.8%1.86ct | Cushion | E | VVS2 | Ideal
From $617
Compare at $2,550
IGISave 82.7%1.86ct | Cushion | E | VS1 | Ideal
From $540
Compare at $3,130
IGISave 49.3%1.86ct | Cushion | D | VVS2 | Very Good
From $688
Compare at $1,358
IGISave 84.8%1.86ct | Cushion | D | IF | Good
From $1,433
Compare at $9,460
IGISave 83.1%1.86ct | Cushion | D | VVS1 | Ideal
From $683
Compare at $4,040
IGISave 77.3%1.86ct | Cushion | E | VS1 | Very Good
From $714
Compare at $3,140
IGISave 49.8%1.86ct | Cushion | D | VVS2 | Ideal
From $820
Compare at $1,634
IGISave 67.1%1.86ct | Cushion | D | VS1 | Very Good
From $557
Compare at $1,690
IGISave 53.9%1.86ct | Cushion | D | VVS1 | Very Good
From $855
Compare at $1,854
IGISave 78%1.86ct | Cushion | G | VS1 | Very Good
From $558
Compare at $2,540
IGISave 68.6%1.86ct | Cushion | G | VS1 | Good
From $645
Compare at $2,050
IGISave 72%1.86ct | Cushion | G | VS1 | Very Good
From $617
Compare at $2,200
IGISave 43%1.86ct | Cushion | E | VVS2 | Ideal
From $652
Compare at $1,143
IGISave 48%1.86ct | Cushion | D | VS1 | Ideal
From $652
Compare at $1,254
IGISave 81.1%1.86ct | Cushion | E | VS1 | Ideal
From $634
Compare at $3,360
IGISave 82.5%1.86ct | Cushion | D | VVS1 | Good
From $615
Compare at $3,520
IGISave 83.8%1.86ct | Cushion | D | VVS1 | Ideal
From $585
Compare at $3,620
IGISave 59.4%1.86ct | Cushion | E | VVS1 | Ideal
From $874
Compare at $2,152
IGISave 81.7%1.86ct | Cushion | D | VVS2 | Ideal
From $551
Compare at $3,020
1.86ct | Cushion | FANCY | VVS2 | Ideal
From $1,693
Compare at $2,511
IGISave 83%1.86ct | Cushion | E | VVS2 | Ideal
From $533
Compare at $3,130
IGISave 27.7%1.86ct | Cushion | FANCY | VS2 | Good
From $1,057
Compare at $1,462
IGISave 52.9%1.86ct | Cushion | E | VVS2 | Very Good
From $663
Compare at $1,407
IGISave 10.7%1.86ct | Cushion | E | VVS2 | Very Good
From $663
Compare at $742
IGISave 52.9%1.86ct | Cushion | E | VVS2 | Very Good
From $663
Compare at $1,407
IGISave 18.5%1.86ct | Cushion | D | VVS2 | Very Good
From $540
Compare at $663
IGISave 36.5%1.86ct | Cushion | E | VVS2 | Ideal
From $2,230
Compare at $3,510
1.86ct | Cushion | E | VS1 | Very Good
From $565
Compare at $3,130
IGISave 82.9%1.86ct | Cushion | F | VVS1 | Ideal
From $634
Compare at $3,710
IGISave 56.2%1.86ct | Cushion | E | VVS2 | Very Good
From $629
Compare at $1,435
IGISave 43.8%1.86ct | Cushion | E | VVS2 | Very Good
From $670
Compare at $1,191
IGISave 71.5%1.86ct | Cushion | D | VS1 | Ideal
From $643
Compare at $2,260
IGISave 54.6%1.86ct | Cushion | D | VVS2 | Very Good
From $785
Compare at $1,727
IGISave 49.8%1.86ct | Cushion | D | VVS2 | Ideal
From $820
Compare at $1,634
Entry pricing in this category starts around $422.
What to Know When Shopping for 1.9 Carat Cushion Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $5,043 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 $652 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 1,157 comparable stones in this segment. Prices start around $422 and go up to $5,465.
Based on the latest market data, the average asking price is about $780 with a median around $652.
The observed spread is roughly $5,043 across tracked listings, which is about 92.3% 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 $652, 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 11 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 $5,043 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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