1.5 Carat Marquise Lab Grown Diamond Prices Comparison
As of May 2026, 1.5 carat marquise lab grown diamonds usually range from $256 to $5,140, with an average price of $1,169.In the last month, prices for these diamonds are down 1.1%.Compare 8,248 verified listings across 12 retailers tracked by CaratRadar.
1.5 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 8,248 verified 1.5-carat marquise lab grown diamonds listed across 12 online retailers. Prices in this segment range from $256 to $5,140, with an average asking price of $1,169 and a median of $930.
The price spread of $4,884 (95.0% 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.
8,248 diamonds tracked in this segment
Price range: $256 to $5,140
Average price: $1,169
Median price: $930
Available across 12 retailers
Savings potential: up to 95.0%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
8,248
$256
$1,169
$930
$5,140
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 80%IGI | 1.5ct | Marquise | G | VVS2 | Very Good
From $270
Compare at $1,350
IGI | 1.57ct | Marquise | H | VS1 | Excellent
From $301
Compare at $1,240
Save 52.7%IGI | 1.55ct | Marquise | G | VVS2 | Very Good
From $305
Compare at $645
Save 52.8%IGI | 1.56ct | Marquise | G | VVS2 | Excellent
From $312
Compare at $661
Save 52.8%IGI | 1.56ct | Marquise | G | VVS2 | Excellent
From $312
Compare at $661
Save 52.8%IGI | 1.56ct | Marquise | G | VVS2 | Excellent
From $312
Compare at $661
IGI | 1.56ct | Marquise | G | VVS2 | Excellent
From $312
Compare at $661
Save 75.8%IGI | 1.58ct | Marquise | H | VVS2 | Very Good
From $314
Compare at $1,300
Save 48.7%IGI | 1.5ct | Marquise | G | VVS2 | Excellent
From $315
Compare at $614
Save 53.3%IGI | 1.58ct | Marquise | G | VVS2 | Ideal
From $316
Compare at $677
Save 52.2%IGI | 1.56ct | Marquise | G | VVS2 | Excellent
From $316
Compare at $661
Save 74.7%IGI | 1.52ct | Marquise | H | VVS2 | Excellent
From $316
Compare at $1,250
Save 75.3%IGI | 1.58ct | Marquise | H | VS1 | Very Good
From $321
Compare at $1,300
Save 48.6%IGI | 1.52ct | Marquise | G | VVS2 | Excellent
From $323
Compare at $629
Save 74%IGI | 1.52ct | Marquise | G | VS1 | Ideal
From $323
Compare at $1,240
Save 62.5%IGI | 1.51ct | Marquise | G | VVS2 | Excellent
From $324
Compare at $865
Save 77.4%IGI | 1.56ct | Marquise | G | VS1 | Very Good
From $326
Compare at $1,440
Save 70.2%IGI | 1.5ct | Marquise | F | VS2 | Very Good
From $326
Compare at $1,095
Save 77.7%IGI | 1.5ct | Marquise | F | VS2 | Excellent
From $326
Compare at $1,460
Save 50.7%IGI | 1.51ct | Marquise | E | VS2 | Very Good
From $326
Compare at $661
Save 79.4%IGI | 1.6ct | Marquise | G | VS1 | Excellent
From $326
Compare at $1,580
Save 75%IGI | 1.59ct | Marquise | F | VS2 | Excellent
From $328
Compare at $1,310
IGI | 1.59ct | Marquise | G | VS1 | Excellent
From $328
Compare at $659
Save 68.9%IGI | 1.51ct | Marquise | F | VS2 | Excellent
From $328
Compare at $1,055
Save 70%IGI | 1.5ct | Marquise | F | VS2 | Excellent
From $329
Compare at $1,095
Save 71.6%IGI | 1.53ct | Marquise | F | VS1 | Ideal
From $329
Compare at $1,160
IGI | 1.52ct | Marquise | F | VS2 | Excellent
From $330
Compare at $641
IGI | 1.52ct | Marquise | F | VS2 | Excellent
From $330
Compare at $641
IGI | 1.52ct | Marquise | F | VS2 | Excellent
From $330
Compare at $1,060
Save 78.4%IGI | 1.51ct | Marquise | F | VS2 | Excellent
From $331
Compare at $1,530
Save 69.9%IGI | 1.51ct | Marquise | F | VS2 | Ideal
From $331
Compare at $1,100
Save 62.3%IGI | 1.5ct | Marquise | E | VS2 | Very Good
From $333
Compare at $884
Save 71.2%IGI | 1.5ct | Marquise | E | VS2 | Excellent
From $333
Compare at $1,155
Save 70%IGI | 1.5ct | Marquise | E | VS2 | Very Good
From $333
Compare at $1,110
IGI | 1.5ct | Marquise | E | VS2 | Very Good
From $333
Compare at $637
IGI | 1.5ct | Marquise | E | VS2 | Excellent
From $333
Compare at $884
IGI | 1.5ct | Marquise | E | VS2 | Very Good
From $333
Compare at $1,155
IGI | 1.53ct | Marquise | F | VS2 | Excellent
From $333
Compare at $1,070
IGI | 1.5ct | Marquise | E | VS2 | Excellent
From $333
Compare at $1,110
Save 71.2%IGI | 1.5ct | Marquise | E | VS2 | Very Good
From $333
Compare at $1,155
Save 71.2%IGI | 1.5ct | Marquise | E | VS2 | Very Good
From $333
Compare at $1,155
Save 70%IGI | 1.5ct | Marquise | E | VS2 | Excellent
From $333
Compare at $1,110
Save 70.1%IGI | 1.53ct | Marquise | F | VS2 | Ideal
From $333
Compare at $1,115
Save 71.2%IGI | 1.5ct | Marquise | E | VS2 | Ideal
From $333
Compare at $1,155
IGI | 1.5ct | Marquise | E | VS2 | Very Good
From $333
Compare at $1,110
Save 70%IGI | 1.5ct | Marquise | E | VS2 | Excellent
From $333
Compare at $1,110
Save 70%IGI | 1.5ct | Marquise | E | VS2 | Excellent
From $333
Compare at $1,110
Save 71.2%IGI | 1.5ct | Marquise | E | VS2 | Excellent
From $333
Compare at $1,155
Save 70%IGI | 1.5ct | Marquise | E | VS2 | Excellent
From $333
Compare at $1,110
Save 70%IGI | 1.5ct | Marquise | E | VS2 | Excellent
From $333
Compare at $1,110
Entry pricing in this category starts around $256.
What to Know When Shopping for 1.5 Carat Marquise Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $4,884 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 $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.
- Marquise diamonds maximize carat weight face-up and appear larger than their actual weight. Check symmetry carefully.
Frequently Asked Questions
We currently track 8,248 comparable stones in this segment. Prices start around $256 and go up to $5,140.
Based on the latest market data, the average asking price is about $1,169 with a median around $930.
The observed spread is roughly $4,884 across tracked listings, which is about 95.0% 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 $1,169. The median price is $930, 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 12 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 $4,884 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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