How much does a 3.00 to 4.99ct I VS1 natural marquise diamond cost?

As of September 2026, 3.00 to 4.99ct I VS1 natural marquise diamonds typically cost $46,149 NZD to $134,441 NZD, with a median price of $62,720 NZD. There are currently 23 diamonds matching this specification available across retailers.

Where can I find the best price on a I VS1 marquise diamond?

Compare prices across retailers on Carat Hunter to see all your options.

3.00 to 4.99ct I VS1 Natural Marquise

Quick answer

As of September 2026, there are 23 natural marquise diamonds with I colour and VS1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $46,149 NZD to $134,441 NZD, with a median of $62,720 NZD. At least 32 retailers stock this exact specification. Half of all listings fall between $18,829 NZD and $31,124 NZD per carat. The same specification in lab grown form lists at a median of about $577 NZD per carat.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Marquise natural stones in the index: 2,114 USD per carat, -8.8% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

Lowest Price

$29,787 NZD

Highest Price

$254,030 NZD

Average Price

$78,741 NZD

Market Intelligence

Retailers Selling

Price Spread

53.4%

Price Range

Price per carat distribution across retailers

$13,828/ct

10th Percentile

$9,720

Median

$13,828

90th Percentile

$37,845

Score Distribution

23 diamonds scored across 4 quality tiers

Excellent

7 (30.4%)

Very Good

8 (34.8%)

Good

4 (17.4%)

Average

4 (17.4%)

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Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

J VS1J colour is visually identical to I to the naked eye

Save 12%

Lab-Grown I VS1Same specifications, lab-grown origin

Save 97%

Related Specifications

D IF D VVS1 D VVS2 D VS1 D VS2 D SI1 E IF E VVS1 E VVS2 E VS1 E VS2 E SI1 F IF F VVS1 F VVS2 F VS1 F VS2 F SI1 G IF G VVS1 G VVS2 G VS1 G VS2 G SI1 H IF H VVS1 H VVS2 H VS1 H VS2 H SI1 I IF I VVS1 I VVS2 I VS1 I VS2 I SI1