How much does a 1.00 to 1.49ct G SI2 lab grown cushion diamond cost?

As of September 2026, 1.00 to 1.49ct G SI2 lab grown cushion diamonds typically cost $1,323 NZD to $4,249 NZD, with a median price of $2,852 NZD. There are currently 6 diamonds matching this specification available across retailers.

Where can I find the best price on a G SI2 cushion diamond?

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

1.00 to 1.49ct G SI2 Lab Grown Cushion

Quick answer

As of September 2026, there are 6 lab grown cushion diamonds with G colour and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $1,323 NZD to $4,249 NZD, with a median of $2,852 NZD. At least 11 retailers stock this exact specification. Half of all listings fall between $1,078 NZD and $6,082 NZD per carat. The same specification in natural form lists at a median of about $4,482 NZD per carat.

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

1.04ct Cushion G SI2, IGI, score 58 of 100, from $1,479 NZD

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

Lowest Price

$1,166 NZD

Highest Price

$4,513 NZD

Average Price

$2,808 NZD

Market Intelligence

Retailers Selling

Price Spread

146.9%

Price Range

Price per carat distribution across retailers

$1,983/ct

10th Percentile

$326

Median

$1,983

90th Percentile

$4,908

Score Distribution

6 diamonds scored across 1 quality tiers

Average

6 (100.0%)

Find Your Diamond

Search 6 G SI2 cushion diamonds and compare prices.

Search Diamonds

Consider Instead

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

G I1I1 inclusions are not visible without magnification

Save 40%

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