How much does a 0.20 to 0.49ct K SI1 natural princess diamond cost?

As of November 6, 2026, 0.20 to 0.49ct K SI1 natural princess diamonds typically cost $312 NZD to $757 NZD, with a median price of $484 NZD. There are currently 46 diamonds matching this specification available across retailers.

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

About 46% of these diamonds are available at multiple retailers, with an average price spread of 44%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct K SI1 Natural Princess

Quick answer

As of November 6, 2026, there are 46 natural princess diamonds with K colour and SI1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run $312 NZD to $757 NZD, with a median of $484 NZD. Half of all listings fall between $1,028 NZD and $1,642 NZD per carat. The same specification in lab grown form lists at a median of about $1,106 NZD per carat. Over the last 30 days the median price moved +0.7% and the number of listings moved +25.3%.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, October 2026: natural diamonds at 2,202 USD per carat and lab-grown at 462 USD per carat, a natural to lab ratio of 4.8 to 1. Princess natural stones in the index: 1,991 USD per carat, -8.2% month on month. See the full index release

Figures come from current listings across more than 125 retailers. The index is a monthly release.

Last updated: November 6, 2026

Available

Lowest Price

$287 NZD

Highest Price

$1,337 NZD

Average Price

$518 NZD

Market Intelligence

Cross Retailer %

45.6%

Price Spread

44.3%

30-Day Price Trend

+0.7%

30-Day Supply Change

+25.3%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$779/ct

10th Percentile

$530

Median

$779

90th Percentile

$1,008

Score Distribution

46 diamonds scored across 4 quality tiers

Excellent

3 (6.5%)

Very Good

17 (37.0%)

Good

4 (8.7%)

Average

22 (47.8%)

Find Your Diamond

Search 46 K SI1 princess diamonds and compare prices.

Search Diamonds

Consider Instead

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

K SI2

Save 9%

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