3.5 Carat Marquise Lab Grown Diamond Prices Comparison
As of April 2026, 3.5 carat marquise lab grown diamonds usually range from $575 to $16,848, with an average price of $3,230.In the last month, prices for these diamonds are up 0.9%.Compare 638 verified listings across 8 retailers tracked by CaratRadar.
3.5 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 638 verified 3.5-carat marquise lab grown diamonds listed across 8 online retailers. Prices in this segment range from $575 to $16,848, with an average asking price of $3,230 and a median of $2,341.
The price spread of $16,273 (96.6% 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.
638 diamonds tracked in this segment
Price range: $575 to $16,848
Average price: $3,230
Median price: $2,341
Available across 8 retailers
Savings potential: up to 96.6%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
638
$575
$3,230
$2,341
$16,848
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 66%GIA | 3.5ct | Marquise | E | VS1 | Excellent
From $5,635
Compare at $16,560
GIA | 3.5ct | Marquise | E | VS2 | Ideal
From $6,130
Compare at $6,300
IGI | 3.5ct | Marquise | F | VS1 | Very Good
From $4,756
Compare at $5,103
Save 67.4%IGI | 3.5ct | Marquise | E | VVS1 | Very Good
From $2,359
Compare at $7,230
Save 62.3%IGI | 3.5ct | Marquise | E | VS1 | Excellent
From $1,792
Compare at $4,753
Save 61.1%IGI | 3.5ct | Marquise | E | VVS2 | Good
From $1,343
Compare at $3,447
Save 61.1%IGI | 3.5ct | Marquise | E | VVS2 | Excellent
From $1,343
Compare at $3,447
Save 61%IGI | 3.5ct | Marquise | E | VS1 | Excellent
From $1,289
Compare at $3,308
Save 61%IGI | 3.5ct | Marquise | F | VVS2 | Excellent
From $1,246
Compare at $3,197
Save 61%IGI | 3.5ct | Marquise | E | VS1 | Excellent
From $1,289
Compare at $3,308
Save 61%IGI | 3.5ct | Marquise | E | VS1 | Excellent
From $1,289
Compare at $3,308
Save 61.4%IGI | 3.5ct | Marquise | F | VVS2 | Excellent
From $1,867
Compare at $4,837
Save 63.1%IGI | 3.5ct | Marquise | D | VVS1 | Ideal
From $4,179
Compare at $11,320
Save 78.4%IGI | 3.5ct | Marquise | F | VS1 | Excellent
From $1,834
Compare at $8,490
Save 78.2%IGI | 3.5ct | Marquise | E | VVS2 | Ideal
From $1,677
Compare at $7,700
Save 77.3%IGI | 3.5ct | Marquise | F | VS2 | Ideal
From $1,828
Compare at $8,040
Save 27.1%IGI | 3.5ct | Marquise | G | VS1 | Very Good
From $852
Compare at $1,169
Save 65.3%IGI | 3.5ct | Marquise | E | VVS1 | Ideal
From $3,400
Compare at $9,810
Save 53.7%IGI | 3.5ct | Marquise | FANCY | VS1 | Excellent
From $2,764
Compare at $5,976
IGI | 3.5ct | Marquise | FANCY | VVS2 | Very Good
From $1,829
Compare at $2,600
Save 61%IGI | 3.5ct | Marquise | E | VS1 | Excellent
From $1,289
Compare at $3,308
Save 76%IGI | 3.5ct | Marquise | E | VS1 | Very Good
From $1,445
Compare at $6,020
Save 76.1%IGI | 3.5ct | Marquise | F | VVS2 | Excellent
From $1,833
Compare at $7,660
Save 80%IGI | 3.5ct | Marquise | E | VS1 | Ideal
From $1,281
Compare at $6,400
Save 76.7%IGI | 3.5ct | Marquise | E | VVS2 | Very Good
From $5,505
Compare at $23,580
Save 37.5%IGI | 3.5ct | Marquise | G | VS1 | Very Good
From $877
Compare at $1,404
Save 77.3%IGI | 3.5ct | Marquise | D | VS2 | Ideal
From $1,877
Compare at $8,260
Save 78.4%IGI | 3.5ct | Marquise | F | VS1 | Ideal
From $1,834
Compare at $8,490
Save 38.3%IGI | 3.5ct | Marquise | G | VS1 | Very Good
From $855
Compare at $1,386
Save 75.3%IGI | 3.5ct | Marquise | F | VS2 | Excellent
From $1,024
Compare at $4,140
Save 78.1%IGI | 3.5ct | Marquise | F | VS2 | Excellent
From $1,037
Compare at $4,740
Save 84.3%IGI | 3.5ct | Marquise | G | VVS2 | Ideal
From $1,033
Compare at $6,580
Save 31.4%IGI | 3.5ct | Marquise | H | VS1 | Excellent
From $888
Compare at $1,294
Save 76.5%IGI | 3.5ct | Marquise | E | VS2 | Excellent
From $1,073
Compare at $4,560
Save 75.6%IGI | 3.5ct | Marquise | F | VS2 | Ideal
From $1,385
Compare at $5,670
Save 77.4%IGI | 3.5ct | Marquise | G | VS1 | Very Good
From $915
Compare at $4,050
Save 85%IGI | 3.5ct | Marquise | E | VS1 | Excellent
From $1,115
Compare at $7,410
Save 79.5%IGI | 3.5ct | Marquise | D | VS2 | Excellent
From $1,867
Compare at $9,110
Save 74.1%IGI | 3.5ct | Marquise | F | VS2 | Very Good
From $1,021
Compare at $3,950
Save 63.2%IGI | 3.5ct | Marquise | D | VS1 | Excellent
From $3,117
Compare at $8,460
IGI | 3.5ct | Marquise | D | VVS1 | Very Good
From $3,412
Compare at $3,545
Save 61%IGI | 3.5ct | Marquise | E | VVS2 | Excellent
From $1,354
Compare at $3,475
Save 78.1%IGI | 3.5ct | Marquise | F | VS2 | Very Good
From $1,175
Compare at $5,360
Save 75.4%IGI | 3.5ct | Marquise | F | VS1 | Ideal
From $1,382
Compare at $5,620
Save 61.2%IGI | 3.5ct | Marquise | E | VVS2 | Ideal
From $2,580
Compare at $6,650
Save 57.5%IGI | 3.5ct | Marquise | D | VVS1 | Very Good
From $3,594
Compare at $8,450
Save 17.2%IGI | 3.5ct | Marquise | FANCY | VS1 | Ideal
From $3,409
Compare at $4,117
Save 48.9%IGI | 3.5ct | Marquise | E | VVS1 | Very Good
From $2,533
Compare at $4,953
Save 74.3%IGI | 3.5ct | Marquise | D | SI1 | Very Good
From $1,533
Compare at $5,960
Save 80.5%IGI | 3.5ct | Marquise | F | VS1 | Very Good
From $1,348
Compare at $6,930
Entry pricing in this category starts around $575.
What to Know When Shopping for 3.5 Carat Marquise Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $16,273 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 $2,341 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 638 comparable stones in this segment. Prices start around $575 and go up to $16,848.
Based on the latest market data, the average asking price is about $3,230 with a median around $2,341.
The observed spread is roughly $16,273 across tracked listings, which is about 96.6% 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 $2,341, 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 $16,273 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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