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

As of September 2026, 1.00 to 1.49ct I VS1 natural radiant diamonds typically cost $2,178 SGD to $6,217 SGD, with a median price of $3,660 SGD. There are currently 686 diamonds matching this specification available across retailers.

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

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

1.00 to 1.49ct I VS1 Natural Radiant

Quick answer

As of September 2026, there are 686 natural radiant diamonds with I colour and VS1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $2,178 SGD to $6,217 SGD, with a median of $3,660 SGD. At least 59 retailers stock this exact specification. Half of all listings fall between $3,074 SGD and $5,038 SGD per carat. The same specification in lab grown form lists at a median of about $667 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. Radiant natural stones in the index: 2,765 USD per carat, +6.0% 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

686

Lowest Price

$1,471 SGD

Highest Price

$11,316 SGD

Average Price

$4,022 SGD