How much does a 0.75 to 0.99ct I SI1 natural princess diamond cost?

As of October 2026, 0.75 to 0.99ct I SI1 natural princess diamonds typically cost ₹73,133 INR to ₹2,05,040 INR, with a median price of ₹1,13,512 INR. There are currently 157 diamonds matching this specification available across retailers.

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

About 34% of these diamonds are available at multiple retailers, with an average price spread of 65%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct I SI1 Natural Princess

Quick answer

As of October 2026, there are 157 natural princess diamonds with I colour and SI1 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run ₹73,133 INR to ₹2,05,040 INR, with a median of ₹1,13,512 INR. At least 60 retailers stock this exact specification, and 34% of the stones appear at more than one of them, with an average price spread of 65%. Half of all listings fall between ₹1,05,962 INR and ₹1,93,106 INR per carat. The same specification in lab grown form lists at a median of about ₹1,52,659 INR per carat. Over the last 30 days the median price moved -8.7% and the number of listings moved +16.0%.

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

157

Lowest Price

₹54,180 INR

Highest Price

₹4,40,709 INR

Average Price

₹1,29,933 INR

Market Intelligence

Retailers Selling

Cross Retailer %

34.4%

Price Spread

65.1%

30-Day Price Trend

-8.7%

30-Day Supply Change

+16.0%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$1,405/ct

10th Percentile

$984

Median

$1,405

90th Percentile

$2,984

Score Distribution

420 diamonds scored across 4 quality tiers

Excellent

65 (15.5%)

Very Good

93 (22.1%)

Good

108 (25.7%)

Average

154 (36.7%)

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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