1.5 Carat Marquise Natural Diamond Prices Comparison
As of May 2026, 1.5 carat marquise natural diamonds usually range from $867 to $27,073, with an average price of $11,090.In the last month, prices for these diamonds are up 0.3%.Compare 685 verified listings across 10 retailers tracked by CaratRadar.
1.5 Carat Marquise Natural Diamond Market Overview
CaratRadar currently tracks 685 verified 1.5-carat marquise natural diamonds listed across 10 online retailers. Prices in this segment range from $867 to $27,073, with an average asking price of $11,090 and a median of $10,770.
The price spread of $26,205 (96.8% 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.
685 diamonds tracked in this segment
Price range: $867 to $27,073
Average price: $11,090
Median price: $10,770
Available across 10 retailers
Savings potential: up to 96.8%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
685
$867
$11,090
$10,770
$27,073
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
GIA | 1.5ct | Marquise | L | SI2 | Excellent
From $2,482
Compare at $2,500
Save 15.6%GIA | 1.5ct | Marquise | L | SI2 | Excellent
From $2,650
Compare at $3,141
Save 41.4%GIA | 1.51ct | Marquise | L | SI2 | Excellent
From $2,746
Compare at $4,686
Save 14.7%IGI | 1.5ct | Marquise | K | SI1 | Very Good
From $2,758
Compare at $3,235
Save 44.4%GIA | 1.5ct | Marquise | L | SI2 | Excellent
From $2,768
Compare at $4,980
Save 24%IGI | 1.51ct | Marquise | I | SI2 | Ideal
From $2,796
Compare at $3,680
Save 38.5%GIA | 1.51ct | Marquise | L | SI1 | Excellent
From $2,827
Compare at $4,594
Save 21.9%GIA | 1.5ct | Marquise | L | SI2 | Excellent
From $2,828
Compare at $3,622
Save 41.4%GIA | 1.51ct | Marquise | L | SI2 | Very Good
From $2,836
Compare at $4,842
IGI | 1.51ct | Marquise | K | SI1 | Excellent
From $2,929
Compare at $2,930
Save 13%IGI | 1.5ct | Marquise | K | SI1 | Very Good
From $3,035
Compare at $3,488
Save 13.2%IGI | 1.51ct | Marquise | K | VS2 | Very Good
From $3,110
Compare at $3,583
Save 13.2%IGI | 1.5ct | Marquise | K | VS2 | Very Good
From $3,135
Compare at $3,612
Save 14.5%GIA | 1.5ct | Marquise | L | SI2 | Good
From $3,148
Compare at $3,681
Save 22.6%HRD | 1.51ct | Marquise | H | SI2 | Ideal
From $3,174
Compare at $4,100
Save 22.5%IGI | 1.5ct | Marquise | I | SI2 | Ideal
From $3,191
Compare at $4,120
Save 40.2%GIA | 1.52ct | Marquise | L | SI1 | Ideal
From $3,210
Compare at $5,368
Save 36.7%GIA | 1.5ct | Marquise | K | SI2 | Excellent
From $3,247
Compare at $5,130
GIA | 1.5ct | Marquise | L | SI2 | Very Good
From $3,250
Compare at $3,584
Save 40.2%GIA | 1.51ct | Marquise | K | SI1 | Good
From $3,296
Compare at $5,512
Save 40.2%GIA | 1.51ct | Marquise | L | VS1 | Excellent
From $3,394
Compare at $5,676
Save 40.2%GIA | 1.51ct | Marquise | L | VVS1 | Excellent
From $3,414
Compare at $5,710
Save 13.9%IGI | 1.52ct | Marquise | K | SI1 | Very Good
From $3,420
Compare at $3,973
IGI | 1.5ct | Marquise | K | SI1 | Very Good
From $3,501
Compare at $3,505
Save 44.6%GIA | 1.51ct | Marquise | L | VVS1 | Excellent
From $3,509
Compare at $6,329
Save 40.2%GIA | 1.51ct | Marquise | L | SI2 | Excellent
From $3,558
Compare at $5,953
IGI | 1.5ct | Marquise | K | VS2 | Very Good
From $3,609
Compare at $3,610
Save 21%HRD | 1.51ct | Marquise | G | SI2 | Excellent
From $3,632
Compare at $4,600
Save 40.2%GIA | 1.5ct | Marquise | K | SI2 | Good
From $3,658
Compare at $6,119
Save 22.1%GIA | 1.5ct | Marquise | L | VS2 | Excellent
From $3,664
Compare at $4,706
Save 41.4%GIA | 1.5ct | Marquise | L | VS1 | Very Good
From $3,806
Compare at $6,494
Save 23.8%GIA | 1.5ct | Marquise | L | SI2 | Very Good
From $3,827
Compare at $5,024
Save 31.6%GIA | 1.51ct | Marquise | L | SI2 | Good
From $3,853
Compare at $5,629
Save 39.3%GIA | 1.5ct | Marquise | L | SI1 | Excellent
From $3,997
Compare at $6,587
Save 41%GIA | 1.5ct | Marquise | K | SI1 | Good
From $4,051
Compare at $6,864
Save 17.3%IGI | 1.51ct | Marquise | H | SI2 | Ideal
From $4,059
Compare at $4,910
Save 17.3%HRD | 1.51ct | Marquise | H | SI2 | Ideal
From $4,085
Compare at $4,940
Save 38.7%GIA | 1.5ct | Marquise | K | SI2 | Good
From $4,115
Compare at $6,714
GIA | 1.5ct | Marquise | L | VS2 | Excellent
From $4,178
Compare at $4,403
Save 38.1%GIA | 1.6ct | Marquise | L | IF | Ideal
From $4,197
Compare at $6,781
GIA | 1.5ct | Marquise | L | SI1 | Excellent
From $4,213
Compare at $4,324
Save 17.7%GIA | 1.51ct | Marquise | I | VVS1 | Ideal
From $4,248
Compare at $5,160
Save 21.8%IGI | 1.51ct | Marquise | K | SI1 | Excellent
From $4,268
Compare at $5,460
Save 39.3%GIA | 1.52ct | Marquise | L | VS1 | Very Good
From $4,331
Compare at $7,139
Save 39.8%GIA | 1.51ct | Marquise | K | SI1 | Excellent
From $4,390
Compare at $7,295
Save 22.5%GIA | 1.5ct | Marquise | K | SI1 | Excellent
From $4,407
Compare at $5,690
HRD | 1.51ct | Marquise | J | SI1 | Very Good
From $4,410
Compare at $4,431
Save 39.3%GIA | 1.51ct | Marquise | K | SI2 | Ideal
From $4,444
Compare at $7,326
Save 41%GIA | 1.5ct | Marquise | K | VVS2 | Very Good
From $4,447
Compare at $7,538
Save 14%GIA | 1.51ct | Marquise | H | SI2 | Ideal
From $4,457
Compare at $5,184
Entry pricing in this category starts around $867.
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 $26,205 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 $10,770 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 685 comparable stones in this segment. Prices start around $867 and go up to $27,073.
Based on the latest market data, the average asking price is about $11,090 with a median around $10,770.
The observed spread is roughly $26,205 across tracked listings, which is about 96.8% from highest to lowest offer in this bucket.
We refresh pricing data daily so these pages stay current with market changes.
Based on completed market data, the fair market benchmark is $11,090. The median price is $10,770, 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 10 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 $26,205 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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