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

As of September 2026, 3.00 to 4.99ct H SI2 natural cushion diamonds typically cost $18,680 USD to $54,642 USD, with a median price of $32,669 USD. There are currently 198 diamonds matching this specification available across retailers.

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

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3.00 to 4.99ct H SI2 Natural Cushion

Quick answer

As of September 2026, there are 198 natural cushion diamonds with H color and SI2 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $18,680 USD to $54,642 USD, with a median of $32,669 USD. At least 45 retailers stock this exact specification. Half of all listings fall between $7,715 USD and $11,337 USD per carat. The same specification in lab grown form lists at a median of about $846 USD 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

198

Lowest Price

$11,436 USD

Highest Price

$124,659 USD

Average Price

$35,287 USD

Market Intelligence

Retailers Selling

Price Spread

37.9%

Price Range

Price per carat distribution across retailers

$9,567/ct

10th Percentile

$6,323

Median

$9,567

90th Percentile

$13,375

Score Distribution

198 diamonds scored across 4 quality tiers

Excellent

21 (10.6%)

Very Good

51 (25.8%)

Good

67 (33.8%)

Average

59 (29.8%)

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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