1.2 Carat Marquise Lab Grown Diamond Prices Comparison
As of April 2026, 1.2 carat marquise lab grown diamonds usually range from $255 to $3,040, with an average price of $882.In the last month, prices for these diamonds are down 1.9%.Compare 857 verified listings across 9 retailers tracked by CaratRadar.
1.2 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 857 verified 1.2-carat marquise lab grown diamonds listed across 9 online retailers. Prices in this segment range from $255 to $3,040, with an average asking price of $882 and a median of $784.
The price spread of $2,785 (91.6% 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.
857 diamonds tracked in this segment
Price range: $255 to $3,040
Average price: $882
Median price: $784
Available across 9 retailers
Savings potential: up to 91.6%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
857
$255
$882
$784
$3,040
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 69.4%GCAL | 1.2ct | Marquise | D | VS1 | Ideal
From $1,363
Compare at $4,460
Save 70%GIA | 1.2ct | Marquise | D | VVS1 | Excellent
From $1,210
Compare at $4,040
Save 38%IGI | 1.2ct | Marquise | G | VS1 | Ideal
From $2,488
Compare at $4,010
Save 55.2%IGI | 1.2ct | Marquise | H | VVS2 | Excellent
From $555
Compare at $1,240
Save 74.4%IGI | 1.2ct | Marquise | D | VS1 | Ideal
From $714
Compare at $2,790
Save 55.7%IGI | 1.2ct | Marquise | D | VVS1 | Excellent
From $785
Compare at $1,770
Save 58.1%IGI | 1.2ct | Marquise | F | VVS1 | Excellent
From $636
Compare at $1,520
Save 76.1%IGI | 1.2ct | Marquise | D | IF | Ideal
From $1,701
Compare at $7,120
Save 31.2%IGI | 1.2ct | Marquise | E | VS1 | Ideal
From $623
Compare at $905
Save 54.9%IGI | 1.2ct | Marquise | D | VVS1 | Excellent
From $785
Compare at $1,740
Save 26.5%IGI | 1.2ct | Marquise | D | IF | Ideal
From $1,079
Compare at $1,468
Save 58.1%IGI | 1.2ct | Marquise | D | IF | Excellent
From $1,701
Compare at $4,059
Save 58.1%IGI | 1.2ct | Marquise | D | IF | Excellent
From $1,701
Compare at $4,059
Save 26.5%IGI | 1.2ct | Marquise | D | IF | Ideal
From $1,079
Compare at $1,468
Save 26.5%IGI | 1.2ct | Marquise | D | IF | Ideal
From $1,079
Compare at $1,468
Save 57.6%IGI | 1.2ct | Marquise | E | VS1 | Excellent
From $568
Compare at $1,340
Save 51.2%IGI | 1.2ct | Marquise | D | VVS1 | Ideal
From $990
Compare at $2,030
Save 58.1%IGI | 1.2ct | Marquise | D | IF | Excellent
From $1,701
Compare at $4,059
Save 53.8%IGI | 1.2ct | Marquise | D | VVS1 | Excellent
From $785
Compare at $1,700
Save 31.1%IGI | 1.2ct | Marquise | D | IF | Ideal
From $1,701
Compare at $2,470
Save 47.4%IGI | 1.2ct | Marquise | D | FL | Ideal
From $2,150
Compare at $4,090
Save 59.3%IGI | 1.2ct | Marquise | D | VS2 | Very Good
From $436
Compare at $1,070
Save 60.1%IGI | 1.2ct | Marquise | D | VVS2 | Ideal
From $554
Compare at $1,388
Save 57.6%IGI | 1.2ct | Marquise | E | VS1 | Ideal
From $568
Compare at $1,340
Save 58.1%IGI | 1.2ct | Marquise | D | IF | Excellent
From $1,701
Compare at $4,059
Save 52.7%IGI | 1.2ct | Marquise | D | VVS1 | Excellent
From $785
Compare at $1,660
Save 56.8%IGI | 1.2ct | Marquise | E | VVS2 | Very Good
From $630
Compare at $1,460
Save 46.4%IGI | 1.2ct | Marquise | D | VVS2 | Excellent
From $784
Compare at $1,461
Save 36.5%IGI | 1.2ct | Marquise | D | VVS1 | Very Good
From $990
Compare at $1,560
Save 58.1%IGI | 1.2ct | Marquise | D | IF | Excellent
From $1,701
Compare at $4,059
Save 49%IGI | 1.2ct | Marquise | D | VVS2 | Very Good
From $658
Compare at $1,290
Save 50.5%IGI | 1.2ct | Marquise | D | VVS2 | Very Good
From $658
Compare at $1,330
Save 34.4%IGI | 1.2ct | Marquise | E | VVS2 | Ideal
From $844
Compare at $1,286
Save 39.9%IGI | 1.2ct | Marquise | D | IF | Ideal
From $2,440
Compare at $4,059
Save 35.9%IGI | 1.2ct | Marquise | D | IF | Ideal
From $2,600
Compare at $4,059
Save 30%IGI | 1.2ct | Marquise | D | IF | Ideal
From $2,840
Compare at $4,059
Save 41.3%IGI | 1.2ct | Marquise | D | VVS2 | Ideal
From $974
Compare at $1,660
Save 37.9%IGI | 1.2ct | Marquise | D | IF | Ideal
From $2,520
Compare at $4,059
Save 32%IGI | 1.2ct | Marquise | D | IF | Ideal
From $2,760
Compare at $4,059
Save 73.7%IGI | 1.2ct | Marquise | D | VS2 | Ideal
From $623
Compare at $2,370
Save 68.3%IGI | 1.2ct | Marquise | E | VS2 | Very Good
From $413
Compare at $1,300
Save 74.5%IGI | 1.2ct | Marquise | F | VS1 | Ideal
From $668
Compare at $2,620
Save 26.2%IGI | 1.2ct | Marquise | D | IF | Ideal
From $1,262
Compare at $1,711
Save 24%IGI | 1.2ct | Marquise | E | VS1 | Very Good
From $460
Compare at $606
Save 56.3%IGI | 1.2ct | Marquise | E | VS1 | Very Good
From $495
Compare at $1,132
Save 48.3%IGI | 1.2ct | Marquise | F | VS1 | Very Good
From $532
Compare at $1,030
Save 57.2%IGI | 1.2ct | Marquise | F | VVS2 | Ideal
From $475
Compare at $1,110
Save 50.5%IGI | 1.2ct | Marquise | D | VS1 | Very Good
From $514
Compare at $1,040
Save 53.1%IGI | 1.2ct | Marquise | E | VVS2 | Excellent
From $492
Compare at $1,050
Save 60.4%IGI | 1.2ct | Marquise | E | VS1 | Ideal
From $495
Compare at $1,250
Entry pricing in this category starts around $255.
What to Know When Shopping for 1.2 Carat Marquise Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $2,785 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 $784 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 857 comparable stones in this segment. Prices start around $255 and go up to $3,040.
Based on the latest market data, the average asking price is about $882 with a median around $784.
The observed spread is roughly $2,785 across tracked listings, which is about 91.6% 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 $784, 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 9 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 $2,785 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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