How much does a 3.00 to 4.99ct F SI1 lab grown cushion diamond cost?

As of September 2026, 3.00 to 4.99ct F SI1 lab grown cushion diamonds typically cost $851 SGD to $4,836 SGD, with a median price of $1,484 SGD. There are currently 288 diamonds matching this specification available across retailers.

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

Compare prices across retailers on Carat Hunter to see all your options.

3.00 to 4.99ct F SI1 Lab Grown Cushion

Quick answer

As of September 2026, there are 288 lab grown cushion diamonds with F colour and SI1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $851 SGD to $4,836 SGD, with a median of $1,484 SGD. At least 29 retailers stock this exact specification. Half of all listings fall between $364 SGD and $1,126 SGD per carat. The same specification in natural form lists at a median of about $19,676 SGD per carat.

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

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Cushion lab grown stones in the index: 466 USD per carat, -14.7% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

288

Lowest Price

$373 SGD

Highest Price

$15,575 SGD

Average Price

$2,244 SGD

Market Intelligence

Retailers Selling

Price Spread

152.5%

Price Range

Price per carat distribution across retailers

$393/ct

10th Percentile

$227

Median

$393

90th Percentile

$1,347

Score Distribution

288 diamonds scored across 4 quality tiers

Excellent

42 (14.6%)

Very Good

55 (19.1%)

Good

85 (29.5%)

Average

106 (36.8%)

Find Your Diamond

Search 288 F SI1 cushion diamonds and compare prices.

Search Diamonds

Consider Instead

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

F SI2SI2 inclusions are not visible without magnification

Save 13%

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