How much does a 1.00 to 1.49ct I VS1 natural cushion diamond cost?

As of September 2026, 1.00 to 1.49ct I VS1 natural cushion diamonds typically cost $1,917 SGD to $5,554 SGD, with a median price of $3,187 SGD. There are currently 1,625 diamonds matching this specification available across retailers.

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

Compare prices across retailers on Carat Hunter to see all your options.

1.00 to 1.49ct I VS1 Natural Cushion

Quick answer

As of September 2026, there are 1,625 natural cushion diamonds with I colour and VS1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $1,917 SGD to $5,554 SGD, with a median of $3,187 SGD. At least 60 retailers stock this exact specification. Half of all listings fall between $2,671 SGD and $4,660 SGD per carat. The same specification in lab grown form lists at a median of about $714 SGD per carat.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Cushion natural stones in the index: 2,792 USD per carat, +1.1% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

1,625

Lowest Price

$1,272 SGD

Highest Price

$11,745 SGD

Average Price

$3,513 SGD