How much does a 5.00ct+ G SI1 natural princess diamond cost?

As of October 2026, 5.00ct+ G SI1 natural princess diamonds typically cost $96,175 CAD to $230,115 CAD, with a median price of $144,212 CAD. There are currently 6 diamonds matching this specification available across retailers.

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

About 38% of these diamonds are available at multiple retailers, with an average price spread of 41%. A comparison tool like Carat Hunter lets you see all the prices side by side.

5.00ct+ G SI1 Natural Princess

Quick answer

As of October 2026, there are 6 natural princess diamonds with G color and SI1 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run $96,175 CAD to $230,115 CAD, with a median of $144,212 CAD. At least 35 retailers stock this exact specification, and 38% of the stones appear at more than one of them, with an average price spread of 41%. Half of all listings fall between $21,408 CAD and $31,939 CAD per carat. The same specification in lab grown form lists at a median of about $343 CAD per carat. Over the last 30 days the median price moved +3.7% and the number of listings moved -1.4%.

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

Lowest Price

$87,178 CAD

Highest Price

$336,977 CAD

Average Price

$160,651 CAD

Market Intelligence

Retailers Selling

Cross Retailer %

37.9%

Price Spread

40.6%

30-Day Price Trend

+3.7%

30-Day Supply Change

-1.4%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$18,512/ct

10th Percentile

$13,227

Median

$18,512

90th Percentile

$25,886

Score Distribution

19 diamonds scored across 4 quality tiers

Excellent

3 (15.8%)

Very Good

2 (10.5%)

Good

6 (31.6%)

Average

8 (42.1%)

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Consider Instead

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

G SI2SI2 inclusions are not visible without magnification

Save 21%

Lab-Grown G SI1Same specifications, lab-grown origin

Save 99%

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