How much does a 3.00 to 4.99ct I VS1 natural cushion diamond cost?

As of October 2026, 3.00 to 4.99ct I VS1 natural cushion diamonds typically cost $36,758 AUD to $94,436 AUD, with a median price of $54,604 AUD. There are currently 133 diamonds matching this specification available across retailers.

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

About 34% of these diamonds are available at multiple retailers, with an average price spread of 36%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct I VS1 Natural Cushion

Quick answer

As of October 2026, there are 133 natural cushion diamonds with I colour and VS1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $36,758 AUD to $94,436 AUD, with a median of $54,604 AUD. At least 60 retailers stock this exact specification, and 34% of the stones appear at more than one of them, with an average price spread of 36%. Half of all listings fall between $14,998 AUD and $21,510 AUD per carat. The same specification in lab grown form lists at a median of about $792 AUD per carat. Over the last 30 days the median price moved -2.3% and the number of listings moved +9.7%.

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. Cushion natural stones in the index: 2,948 USD per carat, +1.7% 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

133

Lowest Price

$19,012 AUD

Highest Price

$173,301 AUD

Average Price

$60,410 AUD