0.9 Carat Marquise Lab Grown Diamond Prices Comparison
As of April 2026, 0.9 carat marquise lab grown diamonds usually range from $253 to $2,402, with an average price of $702.In the last month, prices for these diamonds are down 3.6%.Compare 2,137 verified listings across 7 retailers tracked by CaratRadar.
0.9 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 2,137 verified 0.9-carat marquise lab grown diamonds listed across 7 online retailers. Prices in this segment range from $253 to $2,402, with an average asking price of $702 and a median of $642.
The price spread of $2,149 (89.5% 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.
2,137 diamonds tracked in this segment
Price range: $253 to $2,402
Average price: $702
Median price: $642
Available across 7 retailers
Savings potential: up to 89.5%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
2,137
$253
$702
$642
$2,402
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
IGI | 0.91ct | Marquise | H | VS1 | Ideal
From $457
Compare at $463
Save 61.1%IGI | 0.91ct | Marquise | E | SI1 | Ideal
From $373
Compare at $959
Save 42.3%IGI | 0.91ct | Marquise | E | VS1 | Excellent
From $419
Compare at $726
Save 56.8%IGI | 0.91ct | Marquise | E | VS1 | Excellent
From $419
Compare at $970
Save 42.4%IGI | 0.91ct | Marquise | D | VVS2 | Very Good
From $497
Compare at $862
IGI | 0.91ct | Marquise | I | VS1 | Ideal
From $671
Compare at $740
Save 56%IGI | 0.91ct | Marquise | E | VVS2 | Excellent
From $462
Compare at $1,050
Save 42.4%IGI | 0.91ct | Marquise | D | VS1 | Excellent
From $444
Compare at $770
Save 56.8%IGI | 0.91ct | Marquise | E | VS1 | Excellent
From $419
Compare at $970
Save 39%IGI | 0.91ct | Marquise | D | VS1 | Very Good
From $443
Compare at $726
Save 42.4%IGI | 0.91ct | Marquise | D | VVS2 | Excellent
From $497
Compare at $862
Save 73.6%IGI | 0.91ct | Marquise | F | VS1 | Very Good
From $398
Compare at $1,510
Save 73.6%IGI | 0.91ct | Marquise | F | VS1 | Very Good
From $398
Compare at $1,510
Save 73.6%IGI | 0.91ct | Marquise | F | VS1 | Very Good
From $398
Compare at $1,510
Save 73.5%IGI | 0.91ct | Marquise | E | VS1 | Very Good
From $406
Compare at $1,530
Save 68.6%IGI | 0.91ct | Marquise | FANCY | VS1 | Very Good
From $3,129
Compare at $9,950
Save 50.8%IGI | 0.91ct | Marquise | F | VS1 | Excellent
From $354
Compare at $720
Save 61.6%IGI | 0.91ct | Marquise | E | VS1 | Excellent
From $369
Compare at $960
Save 61%IGI | 0.91ct | Marquise | G | VVS2 | Excellent
From $376
Compare at $964
Save 61%IGI | 0.91ct | Marquise | G | VVS2 | Excellent
From $376
Compare at $964
Save 61%IGI | 0.91ct | Marquise | F | VVS2 | Excellent
From $376
Compare at $964
Save 61%IGI | 0.91ct | Marquise | G | VVS2 | Excellent
From $376
Compare at $964
Save 69.5%IGI | 0.91ct | Marquise | E | VVS1 | Excellent
From $501
Compare at $1,640
Save 46.8%IGI | 0.91ct | Marquise | D | VVS2 | Ideal
From $414
Compare at $778
Save 69.5%IGI | 0.91ct | Marquise | D | VVS1 | Excellent
From $531
Compare at $1,740
Save 73.8%IGI | 0.91ct | Marquise | E | IF | Very Good
From $517
Compare at $1,970
Save 45.5%IGI | 0.91ct | Marquise | D | VS2 | Excellent
From $414
Compare at $760
Save 35.5%IGI | 0.91ct | Marquise | E | VVS2 | Ideal
From $544
Compare at $843
Save 23.5%IGI | 0.91ct | Marquise | E | IF | Ideal
From $650
Compare at $849
Save 69.5%IGI | 0.91ct | Marquise | E | VVS1 | Excellent
From $402
Compare at $1,320
Save 24.7%IGI | 0.91ct | Marquise | D | VVS1 | Ideal
From $499
Compare at $663
Save 66.3%IGI | 0.91ct | Marquise | E | VS1 | Excellent
From $327
Compare at $970
Save 63.5%IGI | 0.91ct | Marquise | D | VVS1 | Excellent
From $423
Compare at $1,159
Save 55.7%IGI | 0.91ct | Marquise | D | VVS2 | Excellent
From $345
Compare at $778
Save 50.3%IGI | 0.91ct | Marquise | D | VS1 | Excellent
From $327
Compare at $658
Save 27.2%IGI | 0.91ct | Marquise | E | VVS2 | Ideal
From $626
Compare at $860
Save 63.5%IGI | 0.91ct | Marquise | E | VVS1 | Excellent
From $402
Compare at $1,100
Save 55.7%IGI | 0.91ct | Marquise | D | VVS2 | Excellent
From $345
Compare at $778
Save 64.5%IGI | 0.91ct | Marquise | E | VS1 | Excellent
From $327
Compare at $920
Save 32.2%IGI | 0.91ct | Marquise | D | VVS2 | Ideal
From $383
Compare at $565
Save 53.5%IGI | 0.91ct | Marquise | D | VS1 | Very Good
From $414
Compare at $890
Save 61%IGI | 0.91ct | Marquise | F | VVS2 | Excellent
From $376
Compare at $964
Save 55.7%IGI | 0.91ct | Marquise | D | VVS2 | Excellent
From $345
Compare at $778
Save 45.5%IGI | 0.91ct | Marquise | D | VS1 | Very Good
From $414
Compare at $760
Save 63.5%IGI | 0.91ct | Marquise | D | VVS1 | Excellent
From $423
Compare at $1,159
Save 55.1%IGI | 0.91ct | Marquise | F | VS2 | Excellent
From $301
Compare at $670
Save 50.3%IGI | 0.91ct | Marquise | D | VS1 | Excellent
From $327
Compare at $658
Save 57.9%IGI | 0.91ct | Marquise | D | IF | Ideal
From $787
Compare at $1,870
Save 25.5%IGI | 0.91ct | Marquise | D | VVS1 | Ideal
From $487
Compare at $654
Save 54.7%IGI | 0.91ct | Marquise | E | VVS2 | Excellent
From $341
Compare at $753
Entry pricing in this category starts around $253.
What to Know When Shopping for 0.9 Carat Marquise Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $2,149 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 $642 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 2,137 comparable stones in this segment. Prices start around $253 and go up to $2,402.
Based on the latest market data, the average asking price is about $702 with a median around $642.
The observed spread is roughly $2,149 across tracked listings, which is about 89.5% 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 $642, 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 7 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 $2,149 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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