0.3 Carat Marquise Natural Diamond Prices Comparison
As of April 2026, 0.3 carat marquise natural diamonds usually range from $256 to $5,914, with an average price of $562.In the last month, prices for these diamonds are up 1%.Compare 6,721 verified listings across 6 retailers tracked by CaratRadar.
0.3 Carat Marquise Natural Diamond Market Overview
CaratRadar currently tracks 6,721 verified 0.3-carat marquise natural diamonds listed across 6 online retailers. Prices in this segment range from $256 to $5,914, with an average asking price of $562 and a median of $542.
The price spread of $5,658 (95.7% 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.
6,721 diamonds tracked in this segment
Price range: $256 to $5,914
Average price: $562
Median price: $542
Available across 6 retailers
Savings potential: up to 95.7%
Price Range Overview
As of Apr 14, 2026Real market range for this carat, shape, and diamond type.
6,721
$256
$562
$542
$5,914
Price History
Price Comparison Matrix
Live Listings
See all listingsCompare current retailer offers for this exact segment and open any listing for full details.
Save 12.3%GIA | 0.3ct | Marquise | D | VS1 | Ideal
From $540
Compare at $616
GIA | 0.3ct | Marquise | E | VVS1 | Very Good
From $608
Compare at $648
GIA | 0.3ct | Marquise | D | VVS2 | Ideal
From $611
Compare at $650
GIA | 0.3ct | Marquise | G | VVS1 | Excellent
From $561
Compare at $594
Save 19.5%GIA | 0.3ct | Marquise | I | VS1 | Excellent
From $712
Compare at $885
Save 26.5%GIA | 0.3ct | Marquise | E | VS2 | Excellent
From $581
Compare at $790
Save 12%GIA | 0.3ct | Marquise | E | SI1 | Excellent
From $619
Compare at $704
Save 10.3%GIA | 0.3ct | Marquise | E | VS1 | Excellent
From $532
Compare at $593
Save 10.7%GIA | 0.3ct | Marquise | F | VS2 | Excellent
From $557
Compare at $624
GIA | 0.3ct | Marquise | D | VVS1 | Excellent
From $545
Compare at $576
GIA | 0.3ct | Marquise | D | VVS2 | Excellent
From $539
Compare at $569
GIA | 0.3ct | Marquise | D | VVS2 | Excellent
From $506
Compare at $535
GIA | 0.3ct | Marquise | E | VVS1 | Excellent
From $459
Compare at $482
GIA | 0.3ct | Marquise | E | IF | Excellent
From $604
Compare at $643
GIA | 0.3ct | Marquise | F | VS2 | Good
From $485
Compare at $537
GIA | 0.3ct | Marquise | E | VS1 | Excellent
From $545
Compare at $575
GIA | 0.3ct | Marquise | E | VVS1 | Excellent
From $461
Compare at $485
GIA | 0.3ct | Marquise | E | IF | Excellent
From $526
Compare at $556
GIA | 0.3ct | Marquise | E | VVS1 | Excellent
From $564
Compare at $597
Save 17%GIA | 0.3ct | Marquise | D | VVS1 | Excellent
From $490
Compare at $590
GIA | 0.3ct | Marquise | E | VVS2 | Excellent
From $583
Compare at $617
GIA | 0.3ct | Marquise | E | VVS1 | Excellent
From $608
Compare at $648
GIA | 0.3ct | Marquise | E | IF | Excellent
From $609
Compare at $649
GIA | 0.3ct | Marquise | D | SI1 | Excellent
From $470
Compare at $518
GIA | 0.3ct | Marquise | E | IF | Excellent
From $553
Compare at $584
GIA | 0.3ct | Marquise | D | VVS2 | Excellent
From $563
Compare at $595
Save 11.1%GIA | 0.3ct | Marquise | E | VVS2 | Excellent
From $580
Compare at $652
GIA | 0.3ct | Marquise | D | IF | Excellent
From $633
Compare at $652
GIA | 0.3ct | Marquise | D | VVS1 | Very Good
From $514
Compare at $541
GIA | 0.3ct | Marquise | F | VS1 | Excellent
From $542
Compare at $572
GIA | 0.3ct | Marquise | D | VS1 | Excellent
From $528
Compare at $556
GIA | 0.3ct | Marquise | D | VVS1 | Excellent
From $478
Compare at $504
GIA | 0.3ct | Marquise | E | VVS2 | Excellent
From $573
Compare at $605
GIA | 0.3ct | Marquise | E | VVS2 | Excellent
From $549
Compare at $580
GIA | 0.3ct | Marquise | G | VVS1 | Excellent
From $583
Compare at $616
GIA | 0.3ct | Marquise | E | VVS2 | Excellent
From $583
Compare at $617
GIA | 0.3ct | Marquise | F | VVS1 | Excellent
From $545
Compare at $575
GIA | 0.3ct | Marquise | D | VVS1 | Very Good
From $592
Compare at $631
GIA | 0.3ct | Marquise | D | VVS2 | Excellent
From $473
Compare at $498
GIA | 0.3ct | Marquise | E | VVS1 | Excellent
From $553
Compare at $584
GIA | 0.3ct | Marquise | D | VVS2 | Excellent
From $547
Compare at $579
Save 16.8%GIA | 0.3ct | Marquise | E | VS1 | Excellent
From $480
Compare at $577
GIA | 0.3ct | Marquise | D | VVS1 | Excellent
From $622
Compare at $641
GIA | 0.3ct | Marquise | D | IF | Excellent
From $639
Compare at $658
GIA | 0.3ct | Marquise | D | VS1 | Excellent
From $561
Compare at $594
Save 13.7%GIA | 0.3ct | Marquise | G | VVS1 | Excellent
From $463
Compare at $537
GIA | 0.3ct | Marquise | E | VVS1 | Excellent
From $625
Compare at $644
GIA | 0.3ct | Marquise | F | VVS2 | Excellent
From $514
Compare at $542
GIA | 0.3ct | Marquise | I | VVS1 | Excellent
From $464
Compare at $496
Save 19.1%GIA | 0.3ct | Marquise | E | VVS1 | Excellent
From $520
Compare at $643
Entry pricing in this category starts around $256.
What to Know When Shopping for 0.3 Carat Marquise Natural Diamonds
- Always compare identical certified diamonds across retailers. Identical certificate numbers can have price differences of $5,658 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 $542 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 6,721 comparable stones in this segment. Prices start around $256 and go up to $5,914.
Based on the latest market data, the average asking price is about $562 with a median around $542.
The observed spread is roughly $5,658 across tracked listings, which is about 95.7% 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 $542, 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 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 $5,658 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 0.3 carat Marquise diamonds.