How much does a 0.75 to 0.99ct E SI2 natural cushion diamond cost?

As of November 6, 2026, 0.75 to 0.99ct E SI2 natural cushion diamonds typically cost $1,542 NZD to $5,117 NZD, with a median price of $2,765 NZD. There are currently 258 diamonds matching this specification available across retailers.

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

About 31% of these diamonds are available at multiple retailers, with an average price spread of 60%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct E SI2 Natural Cushion

Quick answer

As of November 6, 2026, there are 258 natural cushion diamonds with E colour and SI2 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run $1,542 NZD to $5,117 NZD, with a median of $2,765 NZD. Half of all listings fall between $2,457 NZD and $4,369 NZD per carat. Over the last 30 days the median price moved -2.2% and the number of listings moved +2.0%.

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

Caratlytics Diamond Price Index, October 2026: natural diamonds at 2,202 USD per carat and lab-grown at 462 USD per carat, a natural to lab ratio of 4.8 to 1. Cushion natural stones in the index: 2,881 USD per carat, -2.5% month on month. See the full index release

Figures come from current listings across more than 125 retailers. The index is a monthly release.

Last updated: November 6, 2026

Available

258

Lowest Price

$992 NZD

Highest Price

$12,341 NZD

Average Price

$3,071 NZD

Market Intelligence

Cross Retailer %

31.0%

Price Spread

60.2%

30-Day Price Trend

-2.2%

30-Day Supply Change

+2.0%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,762/ct

10th Percentile

$983

Median

$1,762

90th Percentile

$3,114

Score Distribution

258 diamonds scored across 4 quality tiers

Excellent

35 (13.6%)

Very Good

43 (16.7%)

Good

85 (32.9%)

Average

95 (36.8%)

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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