How much does a 0.20 to 0.49ct D SI2 natural cushion diamond cost?

As of October 2026, 0.20 to 0.49ct D SI2 natural cushion diamonds typically cost $483 NZD to $1,441 NZD, with a median price of $775 NZD. There are currently 39 diamonds matching this specification available across retailers.

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

About 26% of these diamonds are available at multiple retailers, with an average price spread of 32%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct D SI2 Natural Cushion

Quick answer

As of October 2026, there are 39 natural cushion diamonds with D colour and SI2 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run $483 NZD to $1,441 NZD, with a median of $775 NZD. At least 8 retailers stock this exact specification, and 26% of the stones appear at more than one of them, with an average price spread of 32%. Half of all listings fall between $2,105 NZD and $2,842 NZD per carat. Over the last 30 days the median price moved +0.1% and the number of listings moved +4.3%.

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

Lowest Price

$280 NZD

Highest Price

$2,595 NZD

Average Price

$863 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

26.1%

Price Spread

31.6%

30-Day Price Trend

+0.1%

30-Day Supply Change

+4.3%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,311/ct

10th Percentile

$962

Median

$1,311

90th Percentile

$1,994

Score Distribution

102 diamonds scored across 4 quality tiers

Excellent

25 (24.5%)

Very Good

23 (22.5%)

Good

38 (37.3%)

Average

16 (15.7%)

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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