How much does a 2.00 to 2.99ct J SI2 natural cushion diamond cost?

As of September 2026, 2.00 to 2.99ct J SI2 natural cushion diamonds typically cost $6,516 AUD to $20,095 AUD, with a median price of $11,004 AUD. There are currently 504 diamonds matching this specification available across retailers.

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

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2.00 to 2.99ct J SI2 Natural Cushion

Quick answer

As of September 2026, there are 504 natural cushion diamonds with J colour and SI2 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run $6,516 AUD to $20,095 AUD, with a median of $11,004 AUD. At least 44 retailers stock this exact specification. Half of all listings fall between $3,830 AUD and $6,658 AUD per carat. The same specification in lab grown form lists at a median of about $3,113 AUD 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

504

Lowest Price

$3,798 AUD

Highest Price

$41,464 AUD

Average Price

$12,280 AUD

Market Intelligence

Retailers Selling

Price Spread

56.7%

Price Range

Price per carat distribution across retailers

$3,576/ct

10th Percentile

$2,231

Median

$3,576

90th Percentile

$5,845

Score Distribution

504 diamonds scored across 4 quality tiers

Excellent

58 (11.5%)

Very Good

167 (33.1%)

Good

135 (26.8%)

Average

144 (28.6%)

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Consider Instead

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Lab-Grown J SI2Same specifications, lab-grown origin

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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