How much does a 5.00ct+ G IF natural marquise diamond cost?

As of September 2026, 5.00ct+ G IF natural marquise diamonds typically cost $206,300 NZD to $276,145 NZD, with a median price of $261,080 NZD. There are currently 3 diamonds matching this specification available across retailers.

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

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

5.00ct+ G IF Natural Marquise

Quick answer

As of September 2026, there are 3 natural marquise diamonds with G colour and IF clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run $206,300 NZD to $276,145 NZD, with a median of $261,080 NZD. At least 12 retailers stock this exact specification. Half of all listings fall between $56,820 NZD and $63,956 NZD per carat. The same specification in lab grown form lists at a median of about $4,217 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

$192,605 NZD

Highest Price

$357,535 NZD

Average Price

$244,532 NZD