How much does a 1.00 to 1.49ct H I1 natural princess diamond cost?

As of October 2026, 1.00 to 1.49ct H I1 natural princess diamonds typically cost $1,916 SGD to $4,915 SGD, with a median price of $3,204 SGD. There are currently 59 diamonds matching this specification available across retailers.

Where can I find the best price on a H I1 princess diamond?

About 14% of these diamonds are available at multiple retailers, with an average price spread of 39%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct H I1 Natural Princess

Quick answer

As of October 2026, there are 59 natural princess diamonds with H colour and I1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $1,916 SGD to $4,915 SGD, with a median of $3,204 SGD. At least 27 retailers stock this exact specification, and 14% of the stones appear at more than one of them, with an average price spread of 39%. Half of all listings fall between $1,927 SGD and $2,836 SGD per carat. The same specification in lab grown form lists at a median of about $285 SGD per carat. Over the last 30 days the median price moved -2.7% and the number of listings moved -4.0%.

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. Princess natural stones in the index: 2,158 USD per carat, +5.7% 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

$1,296 SGD

Highest Price

$7,501 SGD

Average Price

$3,305 SGD

Market Intelligence

Retailers Selling

Cross Retailer %

14.3%

Price Spread

38.6%

30-Day Price Trend

-2.7%

30-Day Supply Change

-4.0%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,839/ct

10th Percentile

$1,162

Median

$1,839

90th Percentile

$2,762

Score Distribution

201 diamonds scored across 4 quality tiers

Excellent

14 (7.0%)

Very Good

22 (10.9%)

Good

31 (15.4%)

Average

134 (66.7%)

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Consider Instead

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

Lab-Grown H I1Same 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