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

As of September 2026, 1.00 to 1.49ct I IF natural round diamonds typically cost $3,537 SGD to $8,418 SGD, with a median price of $5,132 SGD. There are currently 1,808 diamonds matching this specification available across retailers.

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

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1.00 to 1.49ct I IF Natural Round

Quick answer

As of September 2026, there are 1,808 natural round diamonds with I colour and IF clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $3,537 SGD to $8,418 SGD, with a median of $5,132 SGD. At least 58 retailers stock this exact specification. Half of all listings fall between $4,277 SGD and $5,987 SGD per carat. The same specification in lab grown form lists at a median of about $4,685 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. Round natural stones in the index: 2,094 USD per carat, -3.8% 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

1,808

Lowest Price

$2,348 SGD

Highest Price

$23,768 SGD

Average Price

$5,580 SGD