9 Carat Marquise Lab Grown Diamond Prices Comparison
As of October 2026, 9 carat marquise lab grown diamonds in the 9.00–9.99 carat benchmark range usually range from $775 to $56,378, with an average price of $5,459.In the last month, prices for these diamonds are down 1.4%.Compare 78 verified listings across 8 retailers tracked by CaratRadar.
9 Carat Marquise Lab Grown Diamond Market Overview
CaratRadar currently tracks 78 verified 9-carat marquise lab grown diamonds in the 9.00–9.99 carat benchmark range, listed across 8 online retailers. Prices in this segment range from $775 to $56,378, with an average asking price of $5,459 and a median of $3,972.
The price spread of $55,603 (98.6% 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 use the same benchmark range throughout the page and 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.
78 diamonds tracked in the 9.00–9.99 carat benchmark
Price range: $775 to $56,378
Average price: $5,459
Median price: $3,972
Available across 8 retailers
Savings potential: up to 98.6%
Price Range Overview
As of Oct 15, 2026Real market range for this carat, shape, and diamond type.
78
$775
$5,459
$3,972
$56,378
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers in the same benchmark range and open any listing for full details.
Save 72%IGI | 9.09ct | Marquise | G | VS1 | Ideal
From $1,354
Compare at $4,844
Save 43.3%IGI | 9.07ct | Marquise | H | SI1 | Ideal
From $1,390
Compare at $2,452
Save 74.2%IGI | 9.05ct | Marquise | G | VVS2 | Excellent
From $1,443
Compare at $5,589
Save 79.2%IGI | 9.01ct | Marquise | H | VS1 | Ideal
From $1,448
Compare at $6,960
Save 74%IGI | 9.01ct | Marquise | F | VS1 | Ideal
From $1,448
Compare at $5,562
Save 74%IGI | 9.01ct | Marquise | F | VS1 | Very Good
From $1,448
Compare at $5,562
Save 73.9%IGI | 9.07ct | Marquise | F | VS1 | Very Good
From $1,459
Compare at $5,599
Save 74%IGI | 9.09ct | Marquise | F | VS1 | Excellent
From $1,461
Compare at $5,612
Save 73.7%IGI | 9ct | Marquise | F | VVS2 | Ideal
From $1,476
Compare at $5,609
Save 64.5%IGI | 9.07ct | Marquise | F | VS1 | Very Good
From $1,482
Compare at $4,173
Save 75.8%IGI | 9.55ct | Marquise | G | VVS2 | Ideal
From $1,503
Compare at $6,208
Save 75.4%IGI | 9.11ct | Marquise | F | VVS2 | Ideal
From $1,531
Compare at $6,216
Save 74%IGI | 9.03ct | Marquise | F | VVS2 | Ideal
From $1,541
Compare at $5,921
Save 74%IGI | 9.03ct | Marquise | F | VVS2 | Ideal
From $1,541
Compare at $5,921
Save 74%IGI | 9.05ct | Marquise | F | VVS2 | Excellent
From $1,544
Compare at $5,933
Save 74%IGI | 9.05ct | Marquise | F | VVS2 | Ideal
From $1,544
Compare at $5,933
Save 79.4%IGI | 9.02ct | Marquise | F | VVS2 | Ideal
From $1,594
Compare at $7,737
Save 75.6%IGI | 9.53ct | Marquise | F | VVS2 | Ideal
From $1,601
Compare at $6,564
Save 75.6%IGI | 9.55ct | Marquise | F | VVS2 | Excellent
From $1,604
Compare at $6,578
Save 75.6%IGI | 9.55ct | Marquise | F | VVS2 | Ideal
From $1,604
Compare at $6,578
Save 71.5%IGI | 9.11ct | Marquise | F | VVS2 | Very Good
From $1,636
Compare at $5,749
Save 78.9%IGI | 9.34ct | Marquise | F | VVS2 | Very Good
From $1,693
Compare at $8,007
Save 61.4%IGI | 9.08ct | Marquise | E | VS1 | Very Good
From $1,702
Compare at $4,409
Save 79.3%IGI | 9.06ct | Marquise | E | VS1 | Ideal
From $1,740
Compare at $8,399
Save 79.3%IGI | 9.35ct | Marquise | G | VS1 | Ideal
From $1,772
Compare at $8,560
Save 69.9%IGI | 9.54ct | Marquise | F | VS1 | Very Good
From $1,780
Compare at $5,919
Save 67.8%IGI | 9.01ct | Marquise | F | VVS2 | Excellent
From $1,842
Compare at $5,712
Save 67.9%IGI | 9.06ct | Marquise | F | VVS2 | Ideal
From $1,852
Compare at $5,773
Save 73.2%IGI | 9.51ct | Marquise | E | VVS2 | Very Good
From $1,886
Compare at $7,045
Save 73.2%IGI | 9.59ct | Marquise | E | VVS2 | Excellent
From $1,901
Compare at $7,104
Save 39.5%IGI | 9.51ct | Marquise | E | VVS2 | Excellent
From $1,945
Compare at $3,217
Save 64.8%IGI | 9.03ct | Marquise | F | VS1 | Very Good
From $2,066
Compare at $5,863
Save 73.5%IGI | 9.11ct | Marquise | F | VS1 | Very Good
From $2,085
Compare at $7,857
Save 79.4%IGI | 9.02ct | Marquise | E | VVS2 | Very Good
From $2,129
Compare at $10,316
Save 79.4%IGI | 9.06ct | Marquise | E | VVS2 | Very Good
From $2,139
Compare at $10,361
Save 79.4%IGI | 9.08ct | Marquise | E | VVS2 | Excellent
From $2,143
Compare at $10,384
Save 72.5%IGI | 9.09ct | Marquise | E | VVS2 | Very Good
From $2,145
Compare at $7,797
Save 68.8%IGI | 9.95ct | Marquise | F | VVS2 | Ideal
From $2,156
Compare at $6,912
Save 71.8%IGI | 9ct | Marquise | H | VVS2 | Excellent
From $2,183
Compare at $7,730
Save 74.5%IGI | 9.37ct | Marquise | G | VS1 | Ideal
From $2,185
Compare at $8,570
Save 79.4%IGI | 9.56ct | Marquise | E | VS1 | Excellent
From $2,237
Compare at $10,850
Save 72.5%IGI | 9.59ct | Marquise | E | VS1 | Excellent
From $2,245
Compare at $8,164
Save 79.3%IGI | 9.06ct | Marquise | FANCY | VVS2
From $2,315
Compare at $11,176
Save 75.8%IGI | 9.5ct | Marquise | G | VVS2 | Ideal
From $2,375
Compare at $9,830
Save 63%IGI | 9.09ct | Marquise | E | VVS2 | Very Good
From $2,411
Compare at $6,520
Save 70.4%IGI | 9.73ct | Marquise | G | VVS2 | Ideal
From $2,459
Compare at $8,320
Save 71.2%IGI | 9.09ct | Marquise | F | VVS2 | Ideal
From $2,538
Compare at $8,820
Save 74%IGI | 9.01ct | Marquise | F | SI1 | Ideal
From $2,547
Compare at $9,800
Save 71.2%IGI | 9.44ct | Marquise | F | VVS2 | Ideal
From $2,635
Compare at $9,150
Save 71.2%IGI | 9.53ct | Marquise | F | VVS2 | Ideal
From $2,660
Compare at $9,230
Entry pricing in this benchmark range starts around $775.
What to Know When Shopping for 9 Carat Marquise Lab Grown Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $55,603 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 $3,972 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 78 comparable stones in the 9.00–9.99 carat benchmark range. Prices start around $775 and go up to $56,378.
Based on the latest market data, the average asking price is about $5,459 with a median around $3,972.
The observed spread is roughly $55,603 across tracked listings, which is about 98.6% from highest to lowest offer in the 9.00–9.99 carat benchmark range.
We refresh pricing data daily so these pages stay current with market changes.
Based on completed market data, the fair market benchmark is $5,459. The median price is $3,972, 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 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 $55,603 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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Tracking Lab Grown inventory for the 9.00–9.99 carat Marquise diamond benchmark.