5.5 Carat Cushion Lab Grown Diamond Prices Comparison
As of February 2026, 5.5 carat cushion lab grown diamonds usually range from $1,129 to $31,900, with an average price of $2,965.In the last month, prices for these diamonds are down 3%.Compare 194 verified listings across 10 retailers tracked by CaratRadar.
5.5 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 194 verified 5.5-carat cushion lab grown diamonds listed across 10 online retailers. Prices in this segment range from $1,129 to $31,900, with an average asking price of $2,965 and a median of $1,889.
The price spread of $30,771 (96.5% 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.
194 diamonds tracked in this segment
Price range: $1,129 to $31,900
Average price: $2,965
Median price: $1,889
Available across 10 retailers
Savings potential: up to 96.5%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
194
$1,129
$2,965
$1,889
$31,900
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 45.8%5.46ct | Cushion | D | VVS1 | Ideal
From $7,934
Compare at $14,630
IGISave 79.5%5.46ct | Cushion | G | VS1 | Very Good
From $1,952
Compare at $9,530
IGISave 64.6%5.46ct | Cushion | D | IF | Ideal
From $21,350
Compare at $60,310
IGISave 41.5%5.47ct | Cushion | H | VS2 | Ideal
From $1,185
Compare at $2,025
IGISave 86.4%5.47ct | Cushion | E | VS1 | Ideal
From $2,177
Compare at $16,020
IGISave 78.2%5.47ct | Cushion | E | VS1 | Excellent
From $2,141
Compare at $9,840
IGISave 85.4%5.47ct | Cushion | G | VVS2 | Ideal
From $1,571
Compare at $10,760
IGI5.47ct | Cushion | E | VS1 | Ideal
From $8,390
Compare at $9,240
IGISave 85.9%5.48ct | Cushion | E | VVS2 | Ideal
From $1,906
Compare at $13,520
GIASave 72.9%5.48ct | Cushion | E | VS1 | Excellent
From $4,409
Compare at $16,260
IGISave 85%5.48ct | Cushion | F | VS1 | Ideal
From $2,031
Compare at $13,550
IGISave 82.2%5.48ct | Cushion | E | VVS2 | Ideal
From $4,420
Compare at $24,800
IGISave 56.2%5.48ct | Cushion | E | IF | Very Good
From $12,354
Compare at $28,197
IGISave 85.3%5.49ct | Cushion | G | VS2 | Ideal
From $1,563
Compare at $10,610
IGISave 83%5.49ct | Cushion | E | VS1 | Ideal
From $1,602
Compare at $9,410
GIASave 35.8%5.49ct | Cushion | E | VVS2 | Ideal
From $9,641
Compare at $15,018
IGISave 67.2%5.49ct | Cushion | F | VS2 | Excellent
From $3,157
Compare at $9,630
GIASave 65.2%5.49ct | Cushion | D | IF | Excellent
From $27,971
Compare at $80,390
IGISave 83.8%5.5ct | Cushion | F | VS1 | Ideal
From $2,039
Compare at $12,580
IGISave 83.6%5.5ct | Cushion | F | VS2 | Ideal
From $1,882
Compare at $11,450
IGISave 85.2%5.5ct | Cushion | G | VS1 | Ideal
From $1,648
Compare at $11,160
IGISave 76.1%5.5ct | Cushion | E | VS1 | Ideal
From $3,086
Compare at $12,920
IGISave 90.4%5.5ct | Cushion | G | VS1 | Ideal
From $1,357
Compare at $14,070
IGISave 88.3%5.5ct | Cushion | G | VS1 | Ideal
From $1,648
Compare at $14,070
IGISave 86.4%5.5ct | Cushion | F | VS2 | Ideal
From $1,555
Compare at $11,450
IGISave 86.7%5.5ct | Cushion | F | VVS2 | Ideal
From $1,301
Compare at $9,800
IGISave 75.3%5.5ct | Cushion | E | VVS2 | Ideal
From $2,515
Compare at $10,200
IGISave 87.1%5.5ct | Cushion | D | VS2 | Ideal
From $1,549
Compare at $11,960
IGISave 84.8%5.5ct | Cushion | E | VVS2 | Very Good
From $1,426
Compare at $9,410
IGISave 66.1%5.5ct | Cushion | E | VVS2 | Very Good
From $1,485
Compare at $4,375
IGISave 84.2%5.5ct | Cushion | E | VVS2 | Ideal
From $1,310
Compare at $8,310
GIASave 49.6%5.5ct | Cushion | D | IF | Ideal
From $28,975
Compare at $57,458
IGISave 85.2%5.5ct | Cushion | G | VS1 | Ideal
From $1,648
Compare at $11,160
IGISave 83.9%5.5ct | Cushion | D | VVS2 | Excellent
From $4,642
Compare at $28,900
IGISave 81.9%5.5ct | Cushion | F | VS1 | Excellent
From $1,716
Compare at $9,470
IGISave 90.6%5.5ct | Cushion | D | VS1 | Ideal
From $1,862
Compare at $19,720
IGISave 87.5%5.5ct | Cushion | E | VS1 | Excellent
From $1,301
Compare at $10,430
5.5ct | Cushion | E | VVS2 | Ideal
From $1,817
Compare at $15,230
IGISave 62%5.5ct | Cushion | F | VVS2 | Very Good
From $1,438
Compare at $3,784
IGISave 54.5%5.5ct | Cushion | F | VVS2 | Very Good
From $1,889
Compare at $4,147
IGISave 87.3%5.5ct | Cushion | F | VS1 | Very Good
From $1,439
Compare at $11,330
IGISave 62.3%5.5ct | Cushion | G | VVS2 | Very Good
From $2,650
Compare at $7,030
IGISave 72.8%5.5ct | Cushion | G | VS1 | Ideal
From $1,729
Compare at $6,350
IGISave 33.7%5.5ct | Cushion | E | VS1 | Very Good
From $4,025
Compare at $6,076
IGISave 84.8%5.5ct | Cushion | F | VVS2 | Ideal
From $1,860
Compare at $12,280
IGISave 88.3%5.5ct | Cushion | G | VVS2 | Very Good
From $1,271
Compare at $10,900
IGISave 84.6%5.5ct | Cushion | G | VS1 | Ideal
From $1,518
Compare at $9,880
IGISave 88.7%5.5ct | Cushion | E | VVS2 | Ideal
From $2,152
Compare at $19,110
IGISave 80.5%5.5ct | Cushion | F | VS1 | Ideal
From $1,523
Compare at $7,800
IGISave 61.9%5.5ct | Cushion | E | VS1 | Very Good
From $1,516
Compare at $3,985
Entry pricing in this category starts around $1,129.
What to Know When Shopping for 5.5 Carat Cushion Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $30,771 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 $1,889 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 194 comparable stones in this segment. Prices start around $1,129 and go up to $31,900.
Based on the latest market data, the average asking price is about $2,965 with a median around $1,889.
The observed spread is roughly $30,771 across tracked listings, which is about 96.5% 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 $1,889, 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 $30,771 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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