How much does a 1.00 to 1.49ct E SI2 natural cushion diamond cost?

As of September 2026, 1.00 to 1.49ct E SI2 natural cushion diamonds typically cost €1,253 EUR to €4,181 EUR, with a median price of €2,135 EUR. There are currently 675 diamonds matching this specification available across retailers.

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1.00 to 1.49ct E SI2 Natural Cushion

Quick answer

As of September 2026, there are 675 natural cushion diamonds with E colour and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run €1,253 EUR to €4,181 EUR, with a median of €2,135 EUR. At least 47 retailers stock this exact specification. Half of all listings fall between €1,614 EUR and €2,847 EUR per carat. The same specification in lab grown form lists at a median of about €454 EUR 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

675

Lowest Price

€716 EUR

Highest Price

€7,954 EUR

Average Price

€2,452 EUR

Market Intelligence

Retailers Selling

Price Spread

58.1%

Price Range

Price per carat distribution across retailers

$2,461/ct

10th Percentile

$1,528

Median

$2,461

90th Percentile

$4,296

Score Distribution

675 diamonds scored across 4 quality tiers

Excellent

108 (16.0%)

Very Good

164 (24.3%)

Good

215 (31.9%)

Average

188 (27.9%)

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Consider Instead

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

F SI2F colour is visually identical to E to the naked eye

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Lab-Grown E SI2Same specifications, lab-grown origin

Save 73%

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