How much does a 1.50 to 1.99ct I VS1 natural marquise diamond cost?

As of October 2026, 1.50 to 1.99ct I VS1 natural marquise diamonds typically cost $10,488 CAD to $25,080 CAD, with a median price of $15,226 CAD. There are currently 38 diamonds matching this specification available across retailers.

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

About 28% of these diamonds are available at multiple retailers, with an average price spread of 31%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct I VS1 Natural Marquise

Quick answer

As of October 2026, there are 38 natural marquise diamonds with I color and VS1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run $10,488 CAD to $25,080 CAD, with a median of $15,226 CAD. At least 56 retailers stock this exact specification, and 28% of the stones appear at more than one of them, with an average price spread of 31%. Half of all listings fall between $9,672 CAD and $13,269 CAD per carat. The same specification in lab grown form lists at a median of about $611 CAD per carat. Over the last 30 days the median price moved -0.4% and the number of listings moved +20.3%.

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. Marquise natural stones in the index: 2,268 USD per carat, +10.8% 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

$5,225 CAD

Highest Price

$42,439 CAD

Average Price

$17,657 CAD