How much does a 1.50 to 1.99ct J SI2 natural cushion diamond cost?

As of October 2026, 1.50 to 1.99ct J SI2 natural cushion diamonds typically cost €2,012 EUR to €5,619 EUR, with a median price of €3,520 EUR. There are currently 233 diamonds matching this specification available across retailers.

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

About 35% of these diamonds are available at multiple retailers, with an average price spread of 47%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct J SI2 Natural Cushion

Quick answer

As of October 2026, there are 233 natural cushion diamonds with J colour and SI2 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run €2,012 EUR to €5,619 EUR, with a median of €3,520 EUR. At least 51 retailers stock this exact specification, and 35% of the stones appear at more than one of them, with an average price spread of 47%. Half of all listings fall between €1,730 EUR and €2,751 EUR per carat. Over the last 30 days the median price moved -0.0% and the number of listings moved +7.6%.

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

233

Lowest Price

€1,193 EUR

Highest Price

€10,561 EUR

Average Price

€3,729 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

34.7%

Price Spread

46.8%

30-Day Price Trend

-0.0%

30-Day Supply Change

+7.6%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$2,440/ct

10th Percentile

$1,541

Median

$2,440

90th Percentile

$3,812

Score Distribution

637 diamonds scored across 4 quality tiers

Excellent

87 (13.7%)

Very Good

135 (21.2%)

Good

143 (22.4%)

Average

272 (42.7%)

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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