How much does a 1.50 to 1.99ct I VS1 natural marquise diamond cost?

As of November 2026, 1.50 to 1.99ct I VS1 natural marquise diamonds typically cost $13,043 NZD to $31,406 NZD, with a median price of $19,149 NZD. There are currently 29 diamonds matching this specification available across retailers.

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

About 29% of these diamonds are available at multiple retailers, with an average price spread of 33%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct I VS1 Natural Marquise

Quick answer

As of November 2026, there are 29 natural marquise diamonds with I colour and VS1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run $13,043 NZD to $31,406 NZD, with a median of $19,149 NZD. At least 55 retailers stock this exact specification, and 29% of the stones appear at more than one of them, with an average price spread of 33%. Half of all listings fall between $12,234 NZD and $16,998 NZD per carat. The same specification in lab grown form lists at a median of about $784 NZD per carat. Over the last 30 days the median price moved -0.8% and the number of listings moved +19.8%.

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: November 2026

Available

Lowest Price

$6,600 NZD

Highest Price

$53,605 NZD

Average Price

$21,936 NZD