5.5 Carat Marquise Lab Grown Diamond Prices Comparison
As of May 2026, 5.5 carat marquise lab grown diamonds usually range from $675 to $21,960, with an average price of $4,149.In the last month, prices for these diamonds are down 5.8%.Compare 71 verified listings across 8 retailers tracked by CaratRadar.
5.5 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 71 verified 5.5-carat marquise lab grown diamonds listed across 8 online retailers. Prices in this segment range from $675 to $21,960, with an average asking price of $4,149 and a median of $2,869.
The price spread of $21,285 (96.9% 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.
71 diamonds tracked in this segment
Price range: $675 to $21,960
Average price: $4,149
Median price: $2,869
Available across 8 retailers
Savings potential: up to 96.9%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
71
$675
$4,149
$2,869
$21,960
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 64.8%IGI | 5.5ct | Marquise | G | VS2 | Ideal
From $933
Compare at $2,647
Save 68.9%IGI | 5.52ct | Marquise | F | VVS2 | Very Good
From $952
Compare at $3,065
Save 76.8%IGI | 5.52ct | Marquise | H | VVS2 | Ideal
From $998
Compare at $4,293
Save 45.8%IGI | 5.51ct | Marquise | G | VS1 | Very Good
From $1,035
Compare at $1,909
Save 57.2%IGI | 5.52ct | Marquise | H | VS2 | Ideal
From $1,039
Compare at $2,425
Save 70%IGI | 5.5ct | Marquise | G | VS1 | Ideal
From $1,067
Compare at $3,552
Save 71%IGI | 5.57ct | Marquise | F | VVS2 | Ideal
From $1,138
Compare at $3,924
Save 61%IGI | 5.52ct | Marquise | F | VS1 | Ideal
From $1,162
Compare at $2,982
Save 44.6%IGI | 5.57ct | Marquise | F | VS1 | Ideal
From $1,181
Compare at $2,133
Save 59%IGI | 5.52ct | Marquise | F | VS1 | Ideal
From $1,248
Compare at $3,043
Save 51.7%IGI | 5.51ct | Marquise | G | VS1 | Very Good
From $1,251
Compare at $2,590
Save 57.2%IGI | 5.52ct | Marquise | F | VS1 | Very Good
From $1,263
Compare at $2,951
Save 32.5%IGI | 5.59ct | Marquise | F | VS1 | Excellent
From $1,313
Compare at $1,945
Save 57.7%IGI | 5.52ct | Marquise | F | VS2 | Very Good
From $1,315
Compare at $3,111
Save 78.8%IGI | 5.51ct | Marquise | G | VS1 | Excellent
From $1,342
Compare at $6,330
Save 80%IGI | 5.56ct | Marquise | G | VS1 | Excellent
From $1,355
Compare at $6,760
Save 29.3%IGI | 5.53ct | Marquise | F | VVS2 | Excellent
From $1,399
Compare at $1,979
Save 55.9%IGI | 5.51ct | Marquise | E | VS1 | Very Good
From $1,404
Compare at $3,187
Save 76.5%IGI | 5.58ct | Marquise | G | VS1 | Ideal
From $1,417
Compare at $6,030
Save 59.7%IGI | 5.53ct | Marquise | E | VVS2 | Very Good
From $1,430
Compare at $3,552
Save 69.3%IGI | 5.54ct | Marquise | E | VVS2 | Ideal
From $1,440
Compare at $4,686
Save 69.3%IGI | 5.55ct | Marquise | E | VVS2 | Good
From $1,442
Compare at $4,694
Save 57.9%IGI | 5.59ct | Marquise | G | VVS2 | Very Good
From $1,452
Compare at $3,447
Save 75.7%IGI | 5.51ct | Marquise | I | VS2 | Ideal
From $1,463
Compare at $6,030
Save 52.6%IGI | 5.52ct | Marquise | F | VVS2 | Very Good
From $1,476
Compare at $3,114
Save 55%IGI | 5.51ct | Marquise | F | VVS2 | Ideal
From $1,482
Compare at $3,293
Save 51.5%IGI | 5.59ct | Marquise | F | VS1 | Very Good
From $1,482
Compare at $3,056
Save 55.2%IGI | 5.54ct | Marquise | F | VVS2 | Ideal
From $1,490
Compare at $3,327
Save 77.3%IGI | 5.52ct | Marquise | I | VS1 | Ideal
From $1,514
Compare at $6,680
Save 67.1%IGI | 5.57ct | Marquise | F | VS1 | Excellent
From $1,516
Compare at $4,601
Save 51.8%IGI | 5.58ct | Marquise | F | VVS2 | Very Good
From $1,535
Compare at $3,183
Save 56%IGI | 5.58ct | Marquise | E | VVS2 | Very Good
From $1,616
Compare at $3,674
Save 54.9%IGI | 5.53ct | Marquise | E | VVS2 | Ideal
From $1,643
Compare at $3,643
Save 53.5%IGI | 5.51ct | Marquise | E | VVS2 | Very Good
From $1,678
Compare at $3,608
Save 20.4%IGI | 5.58ct | Marquise | F | VS1 | Ideal
From $1,768
Compare at $2,222
Save 77.3%IGI | 5.5ct | Marquise | F | VS1 | Very Good
From $1,824
Compare at $8,030
Save 58.1%IGI | 5.5ct | Marquise | D | VS1 | Ideal
From $1,863
Compare at $4,450
Save 76%IGI | 5.59ct | Marquise | F | VS1 | Ideal
From $1,883
Compare at $7,860
Save 49.1%IGI | 5.52ct | Marquise | E | VVS2 | Excellent
From $1,893
Compare at $3,721
Save 77.3%IGI | 5.51ct | Marquise | F | VVS2 | Very Good
From $1,896
Compare at $8,340
Save 42.8%IGI | 5.5ct | Marquise | E | VS1 | Ideal
From $1,902
Compare at $3,323
Save 20.2%IGI | 5.57ct | Marquise | E | VVS2 | Excellent
From $2,005
Compare at $2,511
Save 14.5%IGI | 5.5ct | Marquise | F | VS1 | Very Good
From $2,033
Compare at $2,377
Save 35.1%IGI | 5.53ct | Marquise | F | VS1 | Ideal
From $2,044
Compare at $3,148
Save 79.6%IGI | 5.57ct | Marquise | F | VS1 | Ideal
From $2,058
Compare at $10,090
Save 18.8%IGI | 5.52ct | Marquise | F | VVS2 | Excellent
From $2,099
Compare at $2,584
Save 79.7%IGI | 5.57ct | Marquise | F | VVS2 | Excellent
From $2,198
Compare at $10,846
Save 76.7%IGI | 5.5ct | Marquise | E | VS2 | Very Good
From $2,334
Compare at $10,010
Save 76.7%IGI | 5.5ct | Marquise | E | VS2 | Very Good
From $2,334
Compare at $10,010
Save 18.4%IGI | 5.58ct | Marquise | FANCY | VS1 | Excellent
From $2,345
Compare at $2,874
Entry pricing in this category starts around $675.
What to Know When Shopping for 5.5 Carat Marquise Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $21,285 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 $2,869 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.
- Marquise diamonds maximize carat weight face-up and appear larger than their actual weight. Check symmetry carefully.
Frequently Asked Questions
We currently track 71 comparable stones in this segment. Prices start around $675 and go up to $21,960.
Based on the latest market data, the average asking price is about $4,149 with a median around $2,869.
The observed spread is roughly $21,285 across tracked listings, which is about 96.9% from highest to lowest offer in this bucket.
We refresh pricing data daily so these pages stay current with market changes.
Based on completed market data, the fair market benchmark is $4,149. The median price is $2,869, so offers between the median and fair benchmark can be reasonable, while reputable listings below the median may be especially competitive.
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 $21,285 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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