1 Carat Marquise Natural Diamond Prices Comparison
As of October 2026, 1 carat marquise natural diamonds in the 1.00–1.24 carat benchmark range usually range from $616 to $15,353, with an average price of $4,317.In the last month, prices for these diamonds are down 1.1%.Compare 3,799 verified listings across 12 retailers tracked by CaratRadar.
1 Carat Marquise Natural Diamond Market Overview
CaratRadar currently tracks 3,799 verified 1-carat marquise natural diamonds in the 1.00–1.24 carat benchmark range, listed across 12 online retailers. Prices in this segment range from $616 to $15,353, with an average asking price of $4,317 and a median of $4,032.
The price spread of $14,737 (96.0% 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 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.
3,799 diamonds tracked in the 1.00–1.24 carat benchmark
Price range: $616 to $15,353
Average price: $4,317
Median price: $4,032
Available across 12 retailers
Savings potential: up to 96.0%
Price Range Overview
As of Oct 12, 2026Real market range for this carat, shape, and diamond type.
3,799
$616
$4,317
$4,032
$15,353
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 49.2%HRD | 1.09ct | Marquise | F | I1 | Ideal
From $767
Compare at $1,511
IGI | 1.01ct | Marquise | H | I1 | Very Good
From $773
Compare at $851
Save 34.4%GIA | 1.01ct | Marquise | L | SI2 | Excellent
From $792
Compare at $1,208
IGI | 1.01ct | Marquise | J | SI2 | Ideal
From $818
Compare at $908
IGI | 1ct | Marquise | I | SI2 | Very Good
From $824
Compare at $915
IGI | 1.01ct | Marquise | J | SI2 | Ideal
From $877
Compare at $943
IGI | 1ct | Marquise | K | SI2 | Very Good
From $891
Compare at $956
Save 10.2%IGI | 1.01ct | Marquise | J | SI2 | Ideal
From $898
Compare at $1,000
Save 34.4%GIA | 1.02ct | Marquise | L | SI2 | Excellent
From $899
Compare at $1,370
Save 34.4%GIA | 1.02ct | Marquise | L | SI2 | Excellent
From $902
Compare at $1,374
IGI | 1.02ct | Marquise | I | SI2 | Ideal
From $905
Compare at $972
IGI | 1ct | Marquise | J | SI2 | Very Good
From $906
Compare at $972
Save 10.2%IGI | 1ct | Marquise | I | SI2 | Very Good
From $907
Compare at $1,010
IGI | 1.01ct | Marquise | I | SI2 | Ideal
From $930
Compare at $997
Save 39.8%HRD | 1.01ct | Marquise | E | I1 | Ideal
From $938
Compare at $1,558
Save 34.4%GIA | 1ct | Marquise | K | SI2 | Good
From $947
Compare at $1,443
IGI | 1ct | Marquise | I | SI2 | Very Good
From $955
Compare at $1,004
IGI | 1.21ct | Marquise | J | SI2 | Excellent
From $969
Compare at $1,018
IGI | 1.12ct | Marquise | J | I1 | Ideal
From $972
Compare at $1,027
Save 34.4%GIA | 1ct | Marquise | K | SI2 | Very Good
From $974
Compare at $1,484
IGI | 1.01ct | Marquise | J | SI2 | Ideal
From $976
Compare at $1,026
Save 34.4%GIA | 1.02ct | Marquise | L | SI2 | Excellent
From $978
Compare at $1,490
Save 10.3%IGI | 1.01ct | Marquise | J | SI2 | Ideal
From $978
Compare at $1,090
IGI | 1.04ct | Marquise | L | I1 | Ideal
From $989
Compare at $1,047
IGI | 1.01ct | Marquise | E | I1 | Ideal
From $989
Compare at $1,018
IGI | 1.02ct | Marquise | K | SI2 | Very Good
From $998
Compare at $1,049
IGI | 1ct | Marquise | I | I1 | Very Good
From $1,004
Compare at $1,063
IGI | 1.01ct | Marquise | J | SI2 | Ideal
From $1,008
Compare at $1,059
Save 21%IGI | 1.01ct | Marquise | F | I1 | Very Good
From $1,011
Compare at $1,280
IGI | 1ct | Marquise | L | SI2 | Ideal
From $1,011
Compare at $1,071
Save 23%IGI | 1.01ct | Marquise | K | SI1 | Very Good
From $1,011
Compare at $1,313
IGI | 1.01ct | Marquise | H | SI2 | Ideal
From $1,011
Compare at $1,063
IGI | 1ct | Marquise | H | SI2 | Very Good
From $1,012
Compare at $1,064
IGI | 1.01ct | Marquise | J | SI2 | Ideal
From $1,013
Compare at $1,065
IGI | 1.02ct | Marquise | I | SI2 | Very Good
From $1,027
Compare at $1,080
IGI | 1.01ct | Marquise | I | SI2 | Very Good
From $1,030
Compare at $1,084
IGI | 1ct | Marquise | I | SI2 | Very Good
From $1,040
Compare at $1,093
IGI | 1.01ct | Marquise | I | SI2 | Excellent
From $1,049
Compare at $1,103
IGI | 1.01ct | Marquise | I | SI2 | Ideal
From $1,049
Compare at $1,103
IGI | 1ct | Marquise | G | SI2 | Very Good
From $1,055
Compare at $1,108
Save 34.4%GIA | 1.01ct | Marquise | K | SI2 | Excellent
From $1,060
Compare at $1,616
Save 34.4%GIA | 1.01ct | Marquise | K | SI2 | Excellent
From $1,073
Compare at $1,635
IGI | 1ct | Marquise | I | SI2 | Very Good
From $1,078
Compare at $1,133
Save 17.9%GIA | 1ct | Marquise | L | VS2 | Good
From $1,079
Compare at $1,314
IGI | 1ct | Marquise | I | I1 | Ideal
From $1,079
Compare at $1,169
IGI | 1ct | Marquise | I | SI2 | Very Good
From $1,079
Compare at $1,134
IGI | 1.01ct | Marquise | K | SI2 | Ideal
From $1,082
Compare at $1,200
IGI | 1.01ct | Marquise | J | SI2 | Ideal
From $1,089
Compare at $1,145
IGI | 1ct | Marquise | H | I1 | Ideal
From $1,091
Compare at $1,182
Save 19.3%IGI | 1.02ct | Marquise | K | SI1 | Very Good
From $1,091
Compare at $1,352
Entry pricing in this benchmark range starts around $616.
What to Know When Shopping for 1 Carat Marquise Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $14,737 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 $4,032 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.
- Compare natural vs. lab-grown options for the same carat and shape. Lab-grown diamonds are chemically identical but often 30-50% less expensive.
- 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 3,799 comparable stones in the 1.00–1.24 carat benchmark range. Prices start around $616 and go up to $15,353.
Based on the latest market data, the average asking price is about $4,317 with a median around $4,032.
The observed spread is roughly $14,737 across tracked listings, which is about 96.0% from highest to lowest offer in the 1.00–1.24 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 $4,317. The median price is $4,032, 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 $14,737 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.
Related Price Categories
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Tracking Natural inventory for the 1.00–1.24 carat Marquise diamond benchmark.