How much does a 0.50 to 0.74ct G IF natural marquise diamond cost?

As of October 2026, 0.50 to 0.74ct G IF natural marquise diamonds typically cost $1,516 NZD to $3,882 NZD, with a median price of $2,102 NZD. There are currently 116 diamonds matching this specification available across retailers.

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

About 33% of these diamonds are available at multiple retailers, with an average price spread of 49%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct G IF Natural Marquise

Quick answer

As of October 2026, there are 116 natural marquise diamonds with G colour and IF clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run $1,516 NZD to $3,882 NZD, with a median of $2,102 NZD. At least 55 retailers stock this exact specification, and 33% of the stones appear at more than one of them, with an average price spread of 49%. Half of all listings fall between $3,538 NZD and $5,673 NZD per carat. The same specification in lab grown form lists at a median of about $1,760 NZD per carat. Over the last 30 days the median price moved -2.1% and the number of listings moved +7.2%.

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

Caratlytics Diamond Price Index, September 2026: natural diamonds at 2,335 USD per carat and lab-grown at 443 USD per carat, a natural to lab ratio of 5.3 to 1. Marquise natural stones in the index: 2,268 USD per carat, +10.8% month on month. See the full index release

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

Last updated: October 2026

Available

116

Lowest Price

$1,077 NZD

Highest Price

$8,147 NZD

Average Price

$2,483 NZD