How much does a 1.50 to 1.99ct I SI2 natural emerald diamond cost?

As of October 2026, 1.50 to 1.99ct I SI2 natural emerald diamonds typically cost $5,509 NZD to $17,354 NZD, with a median price of $10,887 NZD. There are currently 77 diamonds matching this specification available across retailers.

Where can I find the best price on a I SI2 emerald diamond?

About 23% of these diamonds are available at multiple retailers, with an average price spread of 64%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct I SI2 Natural Emerald

Quick answer

As of October 2026, there are 77 natural emerald diamonds with I colour and SI2 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run $5,509 NZD to $17,354 NZD, with a median of $10,887 NZD. At least 47 retailers stock this exact specification, and 23% of the stones appear at more than one of them, with an average price spread of 64%. Half of all listings fall between $4,369 NZD and $8,063 NZD per carat. The same specification in lab grown form lists at a median of about $1,438 NZD per carat. Over the last 30 days the median price moved -1.9% and the number of listings moved +6.9%.

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. Emerald natural stones in the index: 2,278 USD per carat, +6.2% 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

Lowest Price

$2,972 NZD

Highest Price

$29,355 NZD

Average Price

$11,018 NZD