How much does a 3.00 to 4.99ct H SI2 natural cushion diamond cost?

As of November 2026, 3.00 to 4.99ct H SI2 natural cushion diamonds typically cost $35,259 NZD to $112,246 NZD, with a median price of $55,529 NZD. There are currently 79 diamonds matching this specification available across retailers.

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

About 43% of these diamonds are available at multiple retailers, with an average price spread of 37%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct H SI2 Natural Cushion

Quick answer

As of November 2026, there are 79 natural cushion diamonds with H colour and SI2 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $35,259 NZD to $112,246 NZD, with a median of $55,529 NZD. At least 51 retailers stock this exact specification, and 43% of the stones appear at more than one of them, with an average price spread of 37%. Half of all listings fall between $13,443 NZD and $19,505 NZD per carat. The same specification in lab grown form lists at a median of about $1,195 NZD per carat. Over the last 30 days the median price moved -0.7% and the number of listings moved +13.4%.

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 100 retailers and refresh daily. The index is a monthly release.

Last updated: November 2026

Available

Lowest Price

$18,266 NZD

Highest Price

$221,182 NZD

Average Price

$65,403 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

43.4%

Price Spread

37.1%

30-Day Price Trend

-0.7%

30-Day Supply Change

+13.4%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$9,214/ct

10th Percentile

$6,217

Median

$9,214

90th Percentile

$12,827

Score Distribution

177 diamonds scored across 4 quality tiers

Excellent

32 (18.1%)

Very Good

44 (24.9%)

Good

40 (22.6%)

Average

61 (34.5%)

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Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

H I1I1 inclusions are not visible without magnification

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Lab-Grown H 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