5.5 Carat Cushion Lab Grown Diamond Prices Comparison
As of April 2026, 5.5 carat cushion lab grown diamonds usually range from $789 to $29,367, with an average price of $5,327.In the last month, prices for these diamonds are down 0.6%.Compare 261 verified listings across 8 retailers tracked by CaratRadar.
5.5 Carat Cushion Lab Grown Diamond Market Overview
CaratRadar currently tracks 261 verified 5.5-carat cushion lab grown diamonds listed across 8 online retailers. Prices in this segment range from $789 to $29,367, with an average asking price of $5,327 and a median of $3,930.
The price spread of $28,578 (97.3% 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.
261 diamonds tracked in this segment
Price range: $789 to $29,367
Average price: $5,327
Median price: $3,930
Available across 8 retailers
Savings potential: up to 97.3%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
261
$789
$5,327
$3,930
$29,367
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 16.3%GIA | 5.5ct | Cushion | D | IF | Ideal
From $26,635
Compare at $31,810
Save 77.1%IGI | 5.5ct | Cushion | G | VS1 | Ideal
From $2,261
Compare at $9,880
Save 80.4%IGI | 5.5ct | Cushion | E | VS1 | Ideal
From $2,666
Compare at $13,600
Save 75.9%IGI | 5.5ct | Cushion | G | VS1 | Ideal
From $1,648
Compare at $6,840
Save 81.1%IGI | 5.5ct | Cushion | F | VS1 | Ideal
From $2,039
Compare at $10,790
Save 72.7%IGI | 5.5ct | Cushion | G | VS1 | Ideal
From $1,648
Compare at $6,040
Save 83.1%IGI | 5.5ct | Cushion | G | VS1 | Ideal
From $1,648
Compare at $9,730
Save 68.9%IGI | 5.5ct | Cushion | F | VS2 | Ideal
From $1,882
Compare at $6,050
Save 70.8%IGI | 5.5ct | Cushion | F | VS2 | Ideal
From $1,882
Compare at $6,450
Save 74.4%IGI | 5.5ct | Cushion | G | VS1 | Ideal
From $1,648
Compare at $6,440
Save 76.4%IGI | 5.5ct | Cushion | D | VVS2 | Excellent
From $6,758
Compare at $28,600
Save 74.6%IGI | 5.5ct | Cushion | F | VS1 | Excellent
From $2,338
Compare at $9,190
Save 58.6%IGI | 5.5ct | Cushion | D | VS1 | Ideal
From $2,229
Compare at $5,390
Save 41.2%IGI | 5.5ct | Cushion | E | VVS2 | Ideal
From $1,981
Compare at $3,371
Save 73.6%IGI | 5.5ct | Cushion | E | VVS2 | Ideal
From $4,846
Compare at $18,390
Save 84.3%IGI | 5.5ct | Cushion | D | VS2 | Ideal
From $1,873
Compare at $11,960
Save 84.9%IGI | 5.5ct | Cushion | F | VVS2 | Ideal
From $1,860
Compare at $12,280
Save 32.1%IGI | 5.5ct | Cushion | F | VS1 | Ideal
From $1,664
Compare at $2,451
Save 77.1%IGI | 5.5ct | Cushion | E | VVS2 | Very Good
From $2,152
Compare at $9,410
Save 25.6%IGI | 5.5ct | Cushion | D | VVS2 | Ideal
From $4,952
Compare at $6,655
Save 49.7%IGI | 5.5ct | Cushion | E | VS1 | Excellent
From $1,860
Compare at $3,702
Save 86.6%IGI | 5.5ct | Cushion | F | VS1 | Very Good
From $1,515
Compare at $11,330
Save 43.6%IGI | 5.5ct | Cushion | F | VVS2 | Very Good
From $1,830
Compare at $3,244
Save 69.3%IGI | 5.5ct | Cushion | G | VS1 | Ideal
From $1,729
Compare at $5,640
Save 41.7%IGI | 5.5ct | Cushion | F | VVS2 | Very Good
From $1,811
Compare at $3,107
Save 43.5%IGI | 5.5ct | Cushion | E | VVS2 | Ideal
From $1,884
Compare at $3,337
Save 58%IGI | 5.5ct | Cushion | FANCY | VS1 | Very Good
From $5,246
Compare at $12,493
IGI | 5.5ct | Cushion | E | VVS2 | Very Good
From $1,648
Compare at $1,650
Save 84.8%IGI | 5.5ct | Cushion | D | VS1 | Very Good
From $2,141
Compare at $14,100
Save 80.6%IGI | 5.5ct | Cushion | E | VS1 | Very Good
From $1,648
Compare at $8,480
Save 78.2%IGI | 5.5ct | Cushion | F | VS1 | Very Good
From $2,485
Compare at $11,390
GIA | 5.51ct | Cushion | F | VVS2 | Ideal
From $5,913
Compare at $5,915
Save 26.3%GIA | 5.51ct | Cushion | F | VS1 | Ideal
From $4,546
Compare at $6,171
Save 79.2%GIA | 5.51ct | Cushion | D | VS1 | Excellent
From $5,935
Compare at $28,580
Save 75.9%IGI | 5.51ct | Cushion | G | VS1 | Ideal
From $1,651
Compare at $6,850
Save 43.4%IGI | 5.51ct | Cushion | F | VS1 | Ideal
From $2,042
Compare at $3,611
Save 43.4%IGI | 5.51ct | Cushion | F | VS1 | Ideal
From $2,042
Compare at $3,611
Save 83.1%IGI | 5.51ct | Cushion | G | VS1 | Ideal
From $1,651
Compare at $9,750
Save 83.1%IGI | 5.51ct | Cushion | G | VS1 | Ideal
From $1,651
Compare at $9,750
Save 78.5%IGI | 5.51ct | Cushion | G | VS1 | Ideal
From $1,651
Compare at $7,660
Save 77.2%IGI | 5.51ct | Cushion | G | VS1 | Ideal
From $1,651
Compare at $7,250
Save 80.2%IGI | 5.51ct | Cushion | F | VS1 | Ideal
From $2,042
Compare at $10,340
Save 83.1%IGI | 5.51ct | Cushion | G | VS1 | Ideal
From $1,651
Compare at $9,750
Save 69.8%IGI | 5.51ct | Cushion | G | VS2 | Ideal
From $1,569
Compare at $5,200
Save 73.2%IGI | 5.51ct | Cushion | G | VS1 | Ideal
From $5,346
Compare at $19,940
Save 75.9%IGI | 5.51ct | Cushion | D | VS1 | Excellent
From $5,869
Compare at $24,380
Save 80.4%IGI | 5.51ct | Cushion | F | VVS2 | Ideal
From $2,415
Compare at $12,340
Save 37.3%IGI | 5.51ct | Cushion | G | VS1 | Ideal
From $2,117
Compare at $3,377
Save 86.9%IGI | 5.51ct | Cushion | F | VS1 | Ideal
From $1,487
Compare at $11,360
Save 79.3%IGI | 5.51ct | Cushion | E | VS1 | Ideal
From $1,864
Compare at $9,020
Entry pricing in this category starts around $789.
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 $28,578 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 $3,930 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 261 comparable stones in this segment. Prices start around $789 and go up to $29,367.
Based on the latest market data, the average asking price is about $5,327 with a median around $3,930.
The observed spread is roughly $28,578 across tracked listings, which is about 97.3% 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 $3,930, 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 8 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 $28,578 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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