How much does a 5.00ct+ J SI2 natural cushion diamond cost?

As of November 2026, 5.00ct+ J SI2 natural cushion diamonds typically cost €36,444 EUR to €135,665 EUR, with a median price of €71,513 EUR. There are currently 42 diamonds matching this specification available across retailers.

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

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5.00ct+ J SI2 Natural Cushion

Quick answer

As of November 2026, there are 42 natural cushion diamonds with J colour and SI2 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run €36,444 EUR to €135,665 EUR, with a median of €71,513 EUR.

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

€28,473 EUR

Highest Price

€238,195 EUR

Average Price

€84,093 EUR

Score Distribution

95 diamonds scored across 4 quality tiers

Excellent

12 (12.6%)

Very Good

18 (18.9%)

Good

23 (24.2%)

Average

42 (44.2%)

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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