How much does a 3.00 to 4.99ct G SI1 lab grown princess diamond cost?

As of October 2026, 3.00 to 4.99ct G SI1 lab grown princess diamonds typically cost $715 SGD to $5,829 SGD, with a median price of $2,062 SGD. There are currently 46 diamonds matching this specification available across retailers.

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

About 36% of these diamonds are available at multiple retailers, with an average price spread of 132%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct G SI1 Lab Grown Princess

Quick answer

As of October 2026, there are 46 lab grown princess diamonds with G colour and SI1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $715 SGD to $5,829 SGD, with a median of $2,062 SGD. At least 34 retailers stock this exact specification, and 36% of the stones appear at more than one of them, with an average price spread of 132%. Half of all listings fall between $293 SGD and $990 SGD per carat. The same specification in natural form lists at a median of about $15,556 SGD per carat. Over the last 30 days the median price moved +27.7% and the number of listings moved +3.4%.

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 lab grown stones in the index: 461 USD per carat, -4.8% 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

$441 SGD

Highest Price

$13,485 SGD

Average Price

$2,839 SGD

Market Intelligence

Retailers Selling

Cross Retailer %

35.5%

Price Spread

132.4%

30-Day Price Trend

+27.7%

30-Day Supply Change

+3.4%

Volatility (30d)

0.06

Price Range

Price per carat distribution across retailers

$410/ct

10th Percentile

$168

Median

$410

90th Percentile

$1,297

Score Distribution

109 diamonds scored across 4 quality tiers

Excellent

18 (16.5%)

Very Good

16 (14.7%)

Good

28 (25.7%)

Average

47 (43.1%)

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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