1.5 Carat Marquise Lab Grown Diamond Prices Comparison
As of February 2026, 1.5 carat marquise lab grown diamonds usually range from $439 to $12,502, with an average price of $915.In the last month, prices for these diamonds are down 0.8%.Compare 2,015 verified listings across 11 retailers tracked by CaratRadar.
1.5 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 2,015 verified 1.5-carat marquise lab grown diamonds listed across 11 online retailers. Prices in this segment range from $439 to $12,502, with an average asking price of $915 and a median of $724.
The price spread of $12,063 (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.
2,015 diamonds tracked in this segment
Price range: $439 to $12,502
Average price: $915
Median price: $724
Available across 11 retailers
Savings potential: up to 96.5%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
2,015
$439
$915
$724
$12,502
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 62.9%1.45ct | Marquise | D | VS1 | Ideal
From $608
Compare at $1,640
IGISave 68.8%1.45ct | Marquise | E | VS1 | Ideal
From $500
Compare at $1,600
IGISave 62.8%1.45ct | Marquise | D | VVS2 | Excellent
From $662
Compare at $1,778
IGISave 74.5%1.45ct | Marquise | E | VS1 | Ideal
From $504
Compare at $1,980
IGISave 78%1.45ct | Marquise | D | VS1 | Ideal
From $514
Compare at $2,340
IGISave 66.7%1.45ct | Marquise | E | VS1 | Ideal
From $500
Compare at $1,500
IGISave 60.2%1.45ct | Marquise | D | IF | Very Good
From $2,147
Compare at $5,395
IGISave 75.3%1.45ct | Marquise | D | VVS2 | Ideal
From $528
Compare at $2,140
IGISave 76.3%1.45ct | Marquise | D | VS1 | Excellent
From $537
Compare at $2,260
IGISave 80.8%1.45ct | Marquise | E | VVS2 | Very Good
From $583
Compare at $3,040
IGISave 63.5%1.45ct | Marquise | E | VS1 | Ideal
From $624
Compare at $1,710
IGISave 70.2%1.45ct | Marquise | D | VVS2 | Very Good
From $788
Compare at $2,645
IGISave 60.8%1.45ct | Marquise | F | VS2 | Very Good
From $521
Compare at $1,330
IGISave 41.8%1.45ct | Marquise | E | VVS1 | Ideal
From $675
Compare at $1,160
IGISave 72.1%1.45ct | Marquise | F | VVS2 | Very Good
From $549
Compare at $1,970
IGISave 37.3%1.45ct | Marquise | F | VVS2 | Excellent
From $599
Compare at $955
IGISave 71.8%1.45ct | Marquise | E | VVS2 | Very Good
From $622
Compare at $2,210
IGISave 70.5%1.45ct | Marquise | F | VVS2 | Excellent
From $587
Compare at $1,990
IGISave 51.2%1.45ct | Marquise | F | VS1 | Very Good
From $551
Compare at $1,128
IGISave 64.2%1.45ct | Marquise | G | VS1 | Excellent
From $447
Compare at $1,250
IGISave 71.1%1.45ct | Marquise | E | VS1 | Ideal
From $543
Compare at $1,880
IGISave 61.6%1.45ct | Marquise | F | VVS1 | Ideal
From $539
Compare at $1,403
IGISave 60%1.45ct | Marquise | D | VS1 | Ideal
From $632
Compare at $1,580
IGISave 50.8%1.45ct | Marquise | E | VS1 | Very Good
From $597
Compare at $1,213
IGISave 72.4%1.45ct | Marquise | D | VS1 | Ideal
From $630
Compare at $2,280
IGISave 69.7%1.45ct | Marquise | D | VS1 | Excellent
From $630
Compare at $2,080
IGISave 52.6%1.45ct | Marquise | D | IF | Very Good
From $963
Compare at $2,029
1.45ct | Marquise | F | VS2 | Very Good
From $572
Compare at $1,370
IGISave 69%1.45ct | Marquise | D | VVS1 | Excellent
From $983
Compare at $3,170
IGISave 67.8%1.45ct | Marquise | E | VS1 | Ideal
From $500
Compare at $1,550
IGISave 76.4%1.45ct | Marquise | D | IF | Excellent
From $963
Compare at $4,080
IGISave 72.4%1.45ct | Marquise | D | VS1 | Excellent
From $635
Compare at $2,305
IGISave 75%1.45ct | Marquise | E | VVS2 | Ideal
From $560
Compare at $2,240
IGISave 71.5%1.45ct | Marquise | E | VVS2 | Excellent
From $598
Compare at $2,100
IGISave 31.4%1.45ct | Marquise | F | VS1 | Ideal
From $587
Compare at $855
IGISave 66.5%1.45ct | Marquise | E | VS1 | Excellent
From $630
Compare at $1,880
IGISave 73.9%1.45ct | Marquise | D | VS1 | Ideal
From $514
Compare at $1,970
IGISave 65.5%1.45ct | Marquise | E | VS1 | Ideal
From $500
Compare at $1,450
IGISave 61.5%1.45ct | Marquise | D | VVS1 | Excellent
From $955
Compare at $2,480
IGISave 65.3%1.45ct | Marquise | E | VVS2 | Ideal
From $530
Compare at $1,529
IGISave 43.4%1.45ct | Marquise | D | VVS2 | Very Good
From $679
Compare at $1,200
IGISave 32.8%1.45ct | Marquise | D | VVS2 | Very Good
From $1,778
Compare at $2,645
IGISave 57%1.45ct | Marquise | E | VS2 | Ideal
From $636
Compare at $1,478
IGISave 51%1.46ct | Marquise | F | VVS2 | Very Good
From $582
Compare at $1,186
IGISave 71.5%1.46ct | Marquise | E | IF | Excellent
From $998
Compare at $3,500
IGISave 72.6%1.46ct | Marquise | D | VVS1 | Excellent
From $775
Compare at $2,830
IGISave 72.8%1.46ct | Marquise | D | VVS2 | Excellent
From $722
Compare at $2,650
IGISave 71.2%1.46ct | Marquise | E | VVS1 | Ideal
From $556
Compare at $1,930
IGISave 71.2%1.46ct | Marquise | E | SI1 | Ideal
From $482
Compare at $1,670
IGISave 64.7%1.46ct | Marquise | E | VS1 | Ideal
From $671
Compare at $1,900
Entry pricing in this category starts around $439.
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 $12,063 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 $724 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 2,015 comparable stones in this segment. Prices start around $439 and go up to $12,502.
Based on the latest market data, the average asking price is about $915 with a median around $724.
The observed spread is roughly $12,063 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 $724, 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 11 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 $12,063 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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