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

As of November 2026, 1.00 to 1.49ct J SI2 natural cushion diamonds typically cost €962 EUR to €2,834 EUR, with a median price of €1,785 EUR. There are currently 276 diamonds matching this specification available across retailers.

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

About 37% of these diamonds are available at multiple retailers, with an average price spread of 65%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct J SI2 Natural Cushion

Quick answer

As of November 2026, there are 276 natural cushion diamonds with J color and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run €962 EUR to €2,834 EUR, with a median of €1,785 EUR. At least 49 retailers stock this exact specification, and 37% of the stones appear at more than one of them, with an average price spread of 65%. Half of all listings fall between €1,072 EUR and €2,071 EUR per carat. Over the last 30 days the median price moved +0.3% and the number of listings moved +6.8%.

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: November 2026

Available

276

Lowest Price

€649 EUR

Highest Price

€5,702 EUR

Average Price

€1,856 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

36.9%

Price Spread

65.3%

30-Day Price Trend

+0.3%

30-Day Supply Change

+6.8%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,710/ct

10th Percentile

$936

Median

$1,710

90th Percentile

$2,936

Score Distribution

671 diamonds scored across 4 quality tiers

Excellent

59 (8.8%)

Very Good

108 (16.1%)

Good

169 (25.2%)

Average

335 (49.9%)

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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