How much does a 0.50 to 0.74ct D SI2 natural cushion diamond cost?

As of October 2026, 0.50 to 0.74ct D SI2 natural cushion diamonds typically cost $846 NZD to $2,631 NZD, with a median price of $1,398 NZD. There are currently 105 diamonds matching this specification available across retailers.

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

About 30% of these diamonds are available at multiple retailers, with an average price spread of 81%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct D SI2 Natural Cushion

Quick answer

As of October 2026, there are 105 natural cushion diamonds with D colour and SI2 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run $846 NZD to $2,631 NZD, with a median of $1,398 NZD. At least 46 retailers stock this exact specification, and 30% of the stones appear at more than one of them, with an average price spread of 81%. Half of all listings fall between $1,739 NZD and $3,586 NZD per carat. The same specification in lab grown form lists at a median of about $1,316 NZD per carat. Over the last 30 days the median price moved -2.9% and the number of listings moved +5.0%.

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

Caratlytics Diamond Price Index, September 2026: natural diamonds at 2,335 USD per carat and lab-grown at 443 USD per carat, a natural to lab ratio of 5.3 to 1. Cushion natural stones in the index: 2,948 USD per carat, +1.7% month on month. See the full index release

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

Last updated: October 2026

Available

105

Lowest Price

$636 NZD

Highest Price

$5,791 NZD

Average Price

$1,596 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

30.5%

Price Spread

81.0%

30-Day Price Trend

-2.9%

30-Day Supply Change

+5.0%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,280/ct

10th Percentile

$786

Median

$1,280

90th Percentile

$2,573

Score Distribution

273 diamonds scored across 4 quality tiers

Excellent

45 (16.5%)

Very Good

49 (17.9%)

Good

77 (28.2%)

Average

102 (37.4%)

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Consider Instead

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Lab-Grown D 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