How much does a 3.00 to 4.99ct I SI1 natural asscher diamond cost?

As of November 2026, 3.00 to 4.99ct I SI1 natural asscher diamonds typically cost $38,831 NZD to $98,207 NZD, with a median price of $56,236 NZD. There are currently 22 diamonds matching this specification available across retailers.

Where can I find the best price on a I SI1 asscher diamond?

About 51% of these diamonds are available at multiple retailers, with an average price spread of 45%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct I SI1 Natural Asscher

Quick answer

As of November 2026, there are 22 natural asscher diamonds with I colour and SI1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $38,831 NZD to $98,207 NZD, with a median of $56,236 NZD. At least 44 retailers stock this exact specification, and 51% of the stones appear at more than one of them, with an average price spread of 45%. Half of all listings fall between $13,298 NZD and $20,912 NZD per carat. The same specification in lab grown form lists at a median of about $3,542 NZD per carat. Over the last 30 days the median price moved -4.3% and the number of listings moved +14.8%.

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. Asscher natural stones in the index: 2,504 USD per carat, -3.3% 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

$34,049 NZD

Highest Price

$173,664 NZD

Average Price

$61,844 NZD