How much does a 1.00 to 1.49ct I SI2 natural oval diamond cost?

As of September 2026, 1.00 to 1.49ct I SI2 natural oval diamonds typically cost $1,641 SGD to $4,777 SGD, with a median price of $2,812 SGD. There are currently 2,876 diamonds matching this specification available across retailers.

Where can I find the best price on a I SI2 oval diamond?

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

1.00 to 1.49ct I SI2 Natural Oval

Quick answer

As of September 2026, there are 2,876 natural oval diamonds with I colour and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $1,641 SGD to $4,777 SGD, with a median of $2,812 SGD. At least 52 retailers stock this exact specification. Half of all listings fall between $2,284 SGD and $3,468 SGD per carat. The same specification in lab grown form lists at a median of about $3,267 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. Oval natural stones in the index: 2,380 USD per carat, -9.6% 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

2,876

Lowest Price

$822 SGD

Highest Price

$15,197 SGD

Average Price

$3,050 SGD