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

As of October 2026, 1.00 to 1.49ct I IF natural radiant diamonds typically cost $2,614 SGD to $6,750 SGD, with a median price of $4,087 SGD. There are currently 27 diamonds matching this specification available across retailers.

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

About 35% of these diamonds are available at multiple retailers, with an average price spread of 63%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct I IF Natural Radiant

Quick answer

As of October 2026, there are 27 natural radiant diamonds with I colour and IF clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $2,614 SGD to $6,750 SGD, with a median of $4,087 SGD. At least 50 retailers stock this exact specification, and 35% of the stones appear at more than one of them, with an average price spread of 63%. Half of all listings fall between $3,425 SGD and $6,301 SGD per carat. The same specification in lab grown form lists at a median of about $1,458 SGD per carat. Over the last 30 days the median price moved +3.0% and the number of listings moved +24.6%.

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. Radiant natural stones in the index: 3,091 USD per carat, +13.2% 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

Lowest Price

$2,011 SGD

Highest Price

$13,494 SGD

Average Price

$4,361 SGD