How much does a 2.00 to 2.99ct J SI1 natural cushion diamond cost?

As of September 2026, 2.00 to 2.99ct J SI1 natural cushion diamonds typically cost $9,347 NZD to $29,613 NZD, with a median price of $16,635 NZD. There are currently 617 diamonds matching this specification available across retailers.

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

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

2.00 to 2.99ct J SI1 Natural Cushion

Quick answer

As of September 2026, there are 617 natural cushion diamonds with J colour and SI1 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run $9,347 NZD to $29,613 NZD, with a median of $16,635 NZD. At least 46 retailers stock this exact specification. Half of all listings fall between $5,095 NZD and $9,063 NZD per carat. The same specification in lab grown form lists at a median of about $2,854 NZD 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 natural stones in the index: 2,792 USD per carat, +1.1% 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

617

Lowest Price

$5,672 NZD

Highest Price

$68,450 NZD

Average Price

$18,397 NZD

Market Intelligence

Retailers Selling

Price Spread

57.9%

Price Range

Price per carat distribution across retailers

$4,110/ct

10th Percentile

$2,401

Median

$4,110

90th Percentile

$6,480

Score Distribution

617 diamonds scored across 4 quality tiers

Excellent

50 (8.1%)

Very Good

134 (21.7%)

Good

222 (36.0%)

Average

211 (34.2%)

Find Your Diamond

Search 617 J 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.

J SI2SI2 inclusions are not visible without magnification

Save 13%

Lab-Grown J SI1Same specifications, lab-grown origin

Save 60%

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