How much does a 1.00 to 1.49ct I SI1 natural oval diamond cost?

As of October 2026, 1.00 to 1.49ct I SI1 natural oval diamonds typically cost $2,443 CAD to $6,702 CAD, with a median price of $3,971 CAD. There are currently 937 diamonds matching this specification available across retailers.

Where can I find the best price on a I SI1 oval diamond?

About 36% of these diamonds are available at multiple retailers, with an average price spread of 48%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct I SI1 Natural Oval

Quick answer

As of October 2026, there are 937 natural oval diamonds with I color and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $2,443 CAD to $6,702 CAD, with a median of $3,971 CAD. At least 62 retailers stock this exact specification, and 36% of the stones appear at more than one of them, with an average price spread of 48%. Half of all listings fall between $3,103 CAD and $4,924 CAD per carat. The same specification in lab grown form lists at a median of about $1,249 CAD per carat. Over the last 30 days the median price moved -0.5% and the number of listings moved -0.7%.

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. Oval natural stones in the index: 2,655 USD per carat, +10.2% 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

937

Lowest Price

$1,218 CAD

Highest Price

$13,995 CAD

Average Price

$4,300 CAD