How much does a 0.50 to 0.74ct J SI1 natural princess diamond cost?

As of October 2026, 0.50 to 0.74ct J SI1 natural princess diamonds typically cost $675 AUD to $1,371 AUD, with a median price of $911 AUD. There are currently 167 diamonds matching this specification available across retailers.

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

About 35% of these diamonds are available at multiple retailers, with an average price spread of 50%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct J SI1 Natural Princess

Quick answer

As of October 2026, there are 167 natural princess diamonds with J colour and SI1 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run $675 AUD to $1,371 AUD, with a median of $911 AUD. At least 54 retailers stock this exact specification, and 35% of the stones appear at more than one of them, with an average price spread of 50%. Half of all listings fall between $1,234 AUD and $1,965 AUD per carat. Over the last 30 days the median price moved -11.3% and the number of listings moved +37.4%.

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

167

Lowest Price

$405 AUD

Highest Price

$2,880 AUD

Average Price

$979 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

34.9%

Price Spread

49.8%

30-Day Price Trend

-11.3%

30-Day Supply Change

+37.4%

Volatility (30d)

0.04

Price Range

Price per carat distribution across retailers

$1,030/ct

10th Percentile

$758

Median

$1,030

90th Percentile

$1,957

Score Distribution

439 diamonds scored across 4 quality tiers

Excellent

23 (5.2%)

Very Good

110 (25.1%)

Good

81 (18.5%)

Average

225 (51.3%)

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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