How much does a 3.00 to 4.99ct G SI1 natural princess diamond cost?

As of September 2026, 3.00 to 4.99ct G SI1 natural princess diamonds typically cost $27,109 SGD to $77,437 SGD, with a median price of $50,947 SGD. There are currently 82 diamonds matching this specification available across retailers.

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

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3.00 to 4.99ct G SI1 Natural Princess

Quick answer

As of September 2026, there are 82 natural princess diamonds with G colour and SI1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $27,109 SGD to $77,437 SGD, with a median of $50,947 SGD. At least 41 retailers stock this exact specification. Half of all listings fall between $12,626 SGD and $18,537 SGD per carat. The same specification in lab grown form lists at a median of about $482 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. Princess natural stones in the index: 2,073 USD per carat, -3.2% 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

Lowest Price

$17,484 SGD

Highest Price

$111,349 SGD

Average Price

$52,868 SGD