1.5 Carat Marquise Natural Diamond Prices Comparison
As of February 2026, 1.5 carat marquise natural diamonds usually range from $512 to $26,410, with an average price of $10,875.In the last month, prices for these diamonds are down 0.4%.Compare 289 verified listings across 7 retailers tracked by CaratRadar.
1.5 Carat Marquise Natural Diamond Market Overview
CaratRadar currently tracks 289 verified 1.5-carat marquise natural diamonds listed across 7 online retailers. Prices in this segment range from $512 to $26,410, with an average asking price of $10,875 and a median of $10,934.
The price spread of $25,898 (98.1% 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.
289 diamonds tracked in this segment
Price range: $512 to $26,410
Average price: $10,875
Median price: $10,934
Available across 7 retailers
Savings potential: up to 98.1%
Price Range Overview
As of Feb 28, 2026Real market range for this carat, shape, and diamond type.
289
$512
$10,875
$10,934
$26,410
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 44.2%1.46ct | Marquise | FANCY | VS2 | Very Good
From $1,032
Compare at $1,850
IGISave 72.2%1.46ct | Marquise | E | VVS2 | Very Good
From $630
Compare at $2,265
IGISave 13%1.49ct | Marquise | E | VVS2 | Very Good
From $548
Compare at $630
1.5ct | Marquise | D | SI1 | Ideal
From $12,113
Compare at $12,310
GIA1.5ct | Marquise | I | VVS2 | Good
From $11,810
Compare at $12,864
GIA1.5ct | Marquise | D | VVS1 | Excellent
From $16,599
Compare at $17,904
GIA1.5ct | Marquise | K | SI1 | Excellent
From $6,143
Compare at $6,805
GIA1.5ct | Marquise | G | VVS1 | Ideal
From $20,294
Compare at $21,499
GIASave 10.6%1.5ct | Marquise | H | SI1 | Excellent
From $10,540
Compare at $11,785
GIASave 53.9%1.5ct | Marquise | G | SI2 | Ideal
From $9,052
Compare at $19,637
GIASave 20%1.5ct | Marquise | E | VS1 | Excellent
From $13,972
Compare at $17,465
GIASave 52.6%1.5ct | Marquise | G | SI2 | Ideal
From $7,077
Compare at $14,929
GIASave 55%1.5ct | Marquise | D | SI1 | Ideal
From $12,105
Compare at $26,913
GIA1.5ct | Marquise | F | SI1 | Excellent
From $14,605
Compare at $15,066
GIASave 55.8%1.5ct | Marquise | F | VS2 | Ideal
From $14,204
Compare at $32,124
HRD1.5ct | Marquise | D | SI1 | Ideal
From $6,420
Compare at $6,807
IGISave 21.3%1.5ct | Marquise | F | VVS1 | Very Good
From $656
Compare at $834
GIASave 34.5%1.5ct | Marquise | E | SI1 | Excellent
From $10,179
Compare at $15,533
GIA1.5ct | Marquise | H | VS2 | Excellent
From $14,711
Compare at $15,176
GIA1.5ct | Marquise | E | SI2 | Very Good
From $11,244
Compare at $11,340
GIA1.5ct | Marquise | D | VVS2 | Very Good
From $13,660
Compare at $14,206
GIASave 55.4%1.5ct | Marquise | F | VS2 | Ideal
From $11,890
Compare at $26,639
1.5ct | Marquise | H | SI2 | Excellent
From $10,046
Compare at $11,230
GIASave 53.8%1.5ct | Marquise | D | SI2 | Ideal
From $9,921
Compare at $21,469
GIASave 21.8%1.5ct | Marquise | E | SI2 | Ideal
From $9,343
Compare at $11,953
GIASave 15.6%1.5ct | Marquise | J | SI1 | Excellent
From $7,642
Compare at $9,053
GIASave 18.5%1.5ct | Marquise | K | SI2 | Excellent
From $5,127
Compare at $6,287
GIASave 56.5%1.5ct | Marquise | D | VS1 | Very Good
From $16,758
Compare at $38,544
GIA1.5ct | Marquise | H | SI1 | Ideal
From $12,873
Compare at $12,956
GIASave 52%1.5ct | Marquise | J | SI2 | Very Good
From $6,530
Compare at $13,591
GIA1.5ct | Marquise | F | SI1 | Good
From $15,201
Compare at $15,230
GIASave 56.8%1.5ct | Marquise | E | IF | Ideal
From $17,899
Compare at $41,402
GIA1.5ct | Marquise | I | VVS1 | Excellent
From $14,153
Compare at $14,239
GIA1.5ct | Marquise | D | SI1 | Excellent
From $13,398
Compare at $13,835
GIASave 36.9%1.5ct | Marquise | D | VS2 | Very Good
From $16,187
Compare at $25,657
GIASave 10.2%1.5ct | Marquise | D | SI1 | Very Good
From $10,840
Compare at $12,070
GIASave 52.6%1.5ct | Marquise | H | SI2 | Ideal
From $7,463
Compare at $15,759
GIASave 13.3%1.5ct | Marquise | D | SI1 | Excellent
From $11,870
Compare at $13,685
GIA1.5ct | Marquise | E | VS2 | Ideal
From $14,725
Compare at $14,750
GIA1.5ct | Marquise | H | VS1 | Excellent
From $15,631
Compare at $16,516
GIA1.5ct | Marquise | F | SI1 | Excellent
From $15,230
Compare at $15,714
GIASave 52.7%1.5ct | Marquise | H | SI2 | Ideal
From $7,940
Compare at $16,792
GIA1.5ct | Marquise | G | SI1 | Very Good
From $11,507
Compare at $11,910
GIA1.5ct | Marquise | E | SI1 | Very Good
From $12,361
Compare at $12,875
GIA1.5ct | Marquise | F | SI1 | Very Good
From $12,933
Compare at $13,661
GIASave 54.3%1.5ct | Marquise | G | SI1 | Ideal
From $11,181
Compare at $24,458
GIA1.5ct | Marquise | H | VVS2 | Excellent
From $16,666
Compare at $17,388
IGISave 73.3%1.5ct | Marquise | D | VS1 | Ideal
From $914
Compare at $3,420
IGI1.5ct | Marquise | H | VVS1 | Very Good
From $17,110
Compare at $18,042
GIASave 34.9%1.5ct | Marquise | D | VVS2 | Excellent
From $16,350
Compare at $25,121
Entry pricing in this category starts around $512.
What to Know When Shopping for 1.5 Carat Marquise Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $25,898 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 $10,934 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 289 comparable stones in this segment. Prices start around $512 and go up to $26,410.
Based on the latest market data, the average asking price is about $10,875 with a median around $10,934.
The observed spread is roughly $25,898 across tracked listings, which is about 98.1% 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 $10,934, 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 $25,898 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 Natural inventory for 1.5 carat Marquise diamonds.