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

As of September 2026, 1.00 to 1.49ct I IF natural princess diamonds typically cost $2,031 AUD to $7,202 AUD, with a median price of $3,476 AUD. There are currently 143 diamonds matching this specification available across retailers.

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1.00 to 1.49ct I IF Natural Princess

Quick answer

As of September 2026, there are 143 natural princess diamonds with I colour and IF clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $2,031 AUD to $7,202 AUD, with a median of $3,476 AUD. At least 49 retailers stock this exact specification. Half of all listings fall between $3,148 AUD and $4,779 AUD per carat. The same specification in lab grown form lists at a median of about $3,105 AUD 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

143

Lowest Price

$1,495 AUD

Highest Price

$11,846 AUD

Average Price

$4,162 AUD

Market Intelligence

Retailers Selling

Price Spread

42.4%

Price Range

Price per carat distribution across retailers

$2,740/ct

10th Percentile

$1,826

Median

$2,740

90th Percentile

$4,407

Score Distribution

143 diamonds scored across 4 quality tiers

Excellent

52 (36.4%)

Very Good

33 (23.1%)

Good

29 (20.3%)

Average

29 (20.3%)

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Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

J IFJ colour is visually identical to I to the naked eye

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Lab-Grown I IFSame specifications, lab-grown origin

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Related Specifications

D IF D VVS1 D VVS2 D VS1 D VS2 D SI1 E IF E VVS1 E VVS2 E VS1 E VS2 E SI1 F IF F VVS1 F VVS2 F VS1 F VS2 F SI1 G IF G VVS1 G VVS2 G VS1 G VS2 G SI1 H IF H VVS1 H VVS2 H VS1 H VS2 H SI1 I IF I VVS1 I VVS2 I VS1 I VS2 I SI1