3.1 Carat Marquise Natural Diamond Prices Comparison
As of May 2026, 3.1 carat marquise natural diamonds usually range from $12,880 to $134,330, with an average price of $57,294.In the last month, prices for these diamonds are up 4.6%.Compare 10 verified listings across 6 retailers tracked by CaratRadar.
3.1 Carat Marquise Natural Diamond Market Overview
CaratRadar currently tracks 10 verified 3.1-carat marquise natural diamonds listed across 6 online retailers. Prices in this segment range from $12,880 to $134,330, with an average asking price of $57,294 and a median of $52,692.
The price spread of $121,450 (90.4% 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.
10 diamonds tracked in this segment
Price range: $12,880 to $134,330
Average price: $57,294
Median price: $52,692
Available across 6 retailers
Savings potential: up to 90.4%
Price Range Overview
As of May 29, 2026Real market range for this carat, shape, and diamond type.
10
$12,880
$57,294
$52,692
$134,330
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 | 3.15ct | Marquise | D | SI2 | Very Good
From $38,732
Compare at $39,768

GIA | 3.14ct | Marquise | G | SI2 | Very Good
From $42,002
Compare at $42,729
GIA | 3.12ct | Marquise | F | SI2 | Ideal
From $43,056
Compare at $62,891

GIA | 3.12ct | Marquise | H | SI1 | Excellent
From $43,148
Compare at $46,007
Save 32.1%GIA | 3.11ct | Marquise | G | SI1 | Excellent
From $44,366
Compare at $65,385

GIA | 3.17ct | Marquise | H | VS2 | Excellent
From $53,472
Compare at $56,676
Save 12.1%GIA | 3.2ct | Marquise | F | VS1 | Very Good
From $60,720
Compare at $69,090
Save 25.3%GIA | 3.2ct | Marquise | G | VVS1 | Very Good
From $75,860
Compare at $101,565
Save 25.6%GIA | 3.19ct | Marquise | F | VVS1 | Excellent
From $79,587
Compare at $106,955
Save 34.5%GIA | 3.17ct | Marquise | D | FL | Very Good
From $107,453
Compare at $164,105
Entry pricing in this category starts around $12,880.
What to Know When Shopping for 3.1 Carat Marquise Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $121,450 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 $52,692 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 10 comparable stones in this segment. Prices start around $12,880 and go up to $134,330.
Based on the latest market data, the average asking price is about $57,294 with a median around $52,692.
The observed spread is roughly $121,450 across tracked listings, which is about 90.4% 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 $57,294. The median price is $52,692, 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 6 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 $121,450 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 3.1 carat Marquise diamonds.