How much does a 0.50 to 0.74ct I VS1 natural cushion diamond cost?

As of October 2026, 0.50 to 0.74ct I VS1 natural cushion diamonds typically cost $659 AUD to $1,726 AUD, with a median price of $1,007 AUD. There are currently 238 diamonds matching this specification available across retailers.

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

About 26% of these diamonds are available at multiple retailers, with an average price spread of 66%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct I VS1 Natural Cushion

Quick answer

As of October 2026, there are 238 natural cushion diamonds with I colour and VS1 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run $659 AUD to $1,726 AUD, with a median of $1,007 AUD. At least 58 retailers stock this exact specification, and 26% of the stones appear at more than one of them, with an average price spread of 66%. Half of all listings fall between $1,441 AUD and $2,640 AUD per carat. The same specification in lab grown form lists at a median of about $902 AUD per carat. Over the last 30 days the median price moved -0.6% and the number of listings moved -7.5%.

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

238

Lowest Price

$430 AUD

Highest Price

$4,398 AUD

Average Price

$1,124 AUD